diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3875cf348..a5a5d0f1e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,8 +33,10 @@ endif()
 if(BUILD_PYTHON_MODULE)
     message(STATUS "Adding Python module")
     # PyBind11 wrapper source file
-    set(PYTHON_SRC bindings.cc)
+    set(PYTHON_SRC bindings.cc launch.cc)
+    set_source_files_properties(launch.cc PROPERTIES COMPILE_FLAGS "-std=c++14 -D_GLIBCXX_USE_CXX11_ABI=0")
     include_directories("." ${PYTHON_INCLUDE_DIRS})
+    link_directories(${PYTHON_LINK_DIRS})
 endif()
 
 
@@ -43,3 +45,6 @@ file(GLOB_RECURSE LIBTRITON_SRC lib/*.cc)
 add_library(triton SHARED ${LIBTRITON_SRC} ${PYTHON_SRC})
 target_link_libraries(triton ${LLVM_LIBRARIES})
 
+if(BUILD_PYTHON_MODULE)
+    target_link_libraries(triton ${TORCH_LIBRARIES})
+endif()
diff --git a/include/triton/driver/stream.h b/include/triton/driver/stream.h
index 4b80b62af..b7c5b7e62 100755
--- a/include/triton/driver/stream.h
+++ b/include/triton/driver/stream.h
@@ -32,7 +32,7 @@ public:
   driver::context* context() const;
   // methods
   virtual void synchronize() = 0;
-  virtual void enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const * = NULL, event *event = NULL) = 0;
+  virtual void enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const * = NULL, event *event = NULL, void **extra = NULL) = 0;
   virtual void write(driver::buffer* buf, bool blocking, std::size_t offset, std::size_t size, void const* ptr) = 0;
   virtual void read(driver::buffer* buf, bool blocking, std::size_t offset, std::size_t size, void* ptr) = 0;
   // template helpers
@@ -53,7 +53,7 @@ public:
 
   // Overridden
   void synchronize();
-  void enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event *event);
+  void enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event *event, void **extra);
   void write(driver::buffer* buf, bool blocking, std::size_t offset, std::size_t size, void const* ptr);
   void read(driver::buffer* buf, bool blocking, std::size_t offset, std::size_t size, void* ptr);
 };
@@ -66,7 +66,7 @@ public:
 
   // Overridden
   void synchronize();
-  void enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event *event);
+  void enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event *event, void **extra);
   void write(driver::buffer* buf, bool blocking, std::size_t offset, std::size_t size, void const* ptr);
   void read(driver::buffer* buf, bool blocking, std::size_t offset, std::size_t size, void* ptr);
 };
@@ -80,7 +80,7 @@ public:
 
   // Overridden
   void synchronize();
-  void enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event *event);
+  void enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event *event, void **extra);
   void write(driver::buffer* buf, bool blocking, std::size_t offset, std::size_t size, void const* ptr);
   void read(driver::buffer* buf, bool blocking, std::size_t offset, std::size_t size, void* ptr);
 };
diff --git a/include/triton/ir/function.h b/include/triton/ir/function.h
index 1a1b3a0ec..189fdd88b 100644
--- a/include/triton/ir/function.h
+++ b/include/triton/ir/function.h
@@ -40,6 +40,7 @@ enum attribute_kind_t {
   noalias,
   aligned,
   multiple_of,
+  retune,
   not_implemented
 };
 
@@ -113,6 +114,7 @@ public:
   // attributes
   void add_attr(unsigned arg_id, attribute attr) { attrs_[arg_id].insert(attr); }
   const attr_map_t &attrs() { return attrs_; }
+  bool has_attr(unsigned arg_id) const { return  attrs_.find(arg_id) != attrs_.end(); }
   std::set<attribute> get_attributes(argument* arg) { return attrs_[arg->get_arg_no() + 1]; }
 
   // visitor
diff --git a/include/triton/lang/ast.h b/include/triton/lang/ast.h
index 2d888efc2..0f57d86cc 100644
--- a/include/triton/lang/ast.h
+++ b/include/triton/lang/ast.h
@@ -64,7 +64,8 @@ public:
       ALIGNED,
       NOALIAS,
       READONLY,
-      WRITEONLY
+      WRITEONLY,
+      RETUNE,
     };
 
     KindT kind;
diff --git a/include/triton/runtime/function.h b/include/triton/runtime/function.h
index 240e4944f..01ebf0eb6 100644
--- a/include/triton/runtime/function.h
+++ b/include/triton/runtime/function.h
@@ -3,7 +3,7 @@
 #ifndef _TRITON_RUNTIME_FUNCTION_H_
 #define _TRITON_RUNTIME_FUNCTION_H_
 
-
+#include <map>
 #include <vector>
 #include <string>
 #include <memory>
@@ -62,6 +62,7 @@ public:
     typedef std::pair<std::string, std::vector<std::string>> define_t;
     std::vector<define_t> defines;
     std::vector<int> num_warps;
+    std::vector<int> recompile_key;
   };
 
   struct options_t {
@@ -94,19 +95,25 @@ private:
     // accessors
     const options_t opt() const { return opt_; }
     const driver::module* parent() const { return &*parent_; }
+    const driver::kernel* bin() const { return &*bin_; }
+    arg_type param_ty(size_t i) const { return param_tys_.at(i);}
+    const std::vector<arg_type>& param_tys() const { return param_tys_; }
+
+    std::vector<int> retune() const { return retune_; }
     // entry points
-    void operator()(driver::stream *stream, const grid_t& grid, const std::vector<arg>& args) const;
+    void operator()(driver::stream *stream, const grid_t& grid, void **args, size_t args_size) const;
 
   private:
     std::shared_ptr<driver::kernel> bin_;
     std::shared_ptr<driver::module> parent_;
     std::vector<arg_type> param_tys_;
+    std::vector<int> retune_;
     options_t opt_;
     std::string name_;
   };
 
 private:
-  typedef std::pair<driver::device*, std::vector<int64_t>> cache_key_t;
+  typedef std::pair<driver::device*, std::vector<int32_t>> cache_key_t;
 
 private:
   // cache
@@ -118,16 +125,15 @@ private:
   caller *make(driver::stream *stream, options_t opt);
   void precompile(driver::stream *stream, const options_space_t& tuning_space);
   // autotune
-  function::cache_key_t get_key(driver::stream *stream, const std::vector<arg>& args);
-  caller* autotune(driver::stream *stream, const grid_fn_ty& grid, const std::vector<arg> &args);
+  caller* autotune(driver::stream *stream, const grid_fn_ty& grid, void **args, size_t args_size);
 
 public:
   static std::string preheader();
 
 public:
   function(const std::string& src, const options_space_t& opt, const std::string &cache_ref = "");
-  void operator()(const std::vector<arg>& args, const grid_t& grid, driver::stream* stream);
-  void operator()(const std::vector<arg>& args, const grid_fn_ty& grid, driver::stream *stream);
+  void operator()(void** args, size_t args_size, const grid_t& grid, driver::stream* stream);
+  void operator()(void** args, size_t args_size, const grid_fn_ty& grid, driver::stream *stream);
   void set_cst(const std::string& name, void* data, size_t n_bytes);
 
 private:
@@ -138,6 +144,8 @@ private:
   options_space_t opt_;
   std::set<options_t> compiled_;
   std::map<options_t, std::unique_ptr<caller>> callers_;
+  std::vector<int> args_off_;
+  size_t args_size_;
   // caching
   std::string cache_ref_;
   std::string cache_path_;
diff --git a/lib/codegen/selection/generator.cc b/lib/codegen/selection/generator.cc
index 93ea21c44..36f4f1aa6 100644
--- a/lib/codegen/selection/generator.cc
+++ b/lib/codegen/selection/generator.cc
@@ -177,6 +177,7 @@ inline llvm::Attribute llvm_attr(llvm::LLVMContext& ctx, ir::attribute attr) {
     case ir::readonly: return llvm::Attribute::get(ctx, llvm::Attribute::ReadOnly);
     case ir::writeonly: return llvm::Attribute::get(ctx, llvm::Attribute::WriteOnly);
     case ir::aligned: return llvm::Attribute::get(ctx, llvm::Attribute::Alignment, attr.get_value());
+    case ir::retune: return llvm::Attribute::get(ctx, llvm::Attribute::None);
     default: throw std::runtime_error("cannot convert ir::attribute_t to llvm::Attribute");
   }
 }
diff --git a/lib/driver/stream.cc b/lib/driver/stream.cc
index 2ff5746fc..8c397ca1e 100755
--- a/lib/driver/stream.cc
+++ b/lib/driver/stream.cc
@@ -79,7 +79,7 @@ void host_stream::synchronize() {
 
 }
 
-void host_stream::enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event* event) {
+void host_stream::enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event* event, void **extra) {
   driver::host_kernel* hst_kernel = (host_kernel*)kernel;
   llvm::ExecutionEngine* engine = kernel->module()->hst()->engine;
   void (*fn)(char**, int32_t, int32_t, int32_t) = (void(*)(char**, int32_t, int32_t, int32_t))engine->getFunctionAddress("main");
@@ -112,7 +112,7 @@ void cl_stream::synchronize() {
   check(dispatch::clFinish(*cl_));
 }
 
-void cl_stream::enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event* event) {
+void cl_stream::enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event* event, void **extra) {
   std::array<size_t, 3> global = {grid[0]*block[0], grid[1]*block[1], grid[2]*block[2]};
   check(dispatch::clEnqueueNDRangeKernel(*cl_, *kernel->cl(), grid.size(), NULL, (const size_t*)global.data(), (const size_t*)block.data(), 0, NULL, NULL));
 }
@@ -149,12 +149,11 @@ void cu_stream::synchronize() {
   dispatch::cuStreamSynchronize(*cu_);
 }
 
-void cu_stream::enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event* event) {
-  driver::cu_kernel* cu_kernel = (driver::cu_kernel*)kernel;
+void cu_stream::enqueue(driver::kernel* kernel, std::array<size_t, 3> grid, std::array<size_t, 3> block, std::vector<event> const *, event* event, void** extra) {
   cu_context::context_switcher ctx_switch(*ctx_);
   if(event)
     dispatch::cuEventRecord(event->cu()->first, *cu_);
-  dispatch::cuLaunchKernel(*kernel->cu(), grid[0], grid[1], grid[2], block[0], block[1], block[2], 0, *cu_,(void**)cu_kernel->cu_params(), NULL);
+  dispatch::cuLaunchKernel(*kernel->cu(), grid[0], grid[1], grid[2], block[0], block[1], block[2], 0, *cu_, nullptr, extra);
   if(event)
     dispatch::cuEventRecord(event->cu()->second, *cu_);
 }
diff --git a/lib/lang/code_gen.cc b/lib/lang/code_gen.cc
index de11ab646..2cf20d85e 100644
--- a/lib/lang/code_gen.cc
+++ b/lib/lang/code_gen.cc
@@ -630,6 +630,8 @@ ir::attribute Generator::GenIRAttr(ASTNode::Attr attr) {
     return ir::attribute(ir::readonly);
   if(attr.kind == ASTNode::Attr::WRITEONLY)
     return ir::attribute(ir::writeonly);
+  if(attr.kind == ASTNode::Attr::RETUNE)
+    return ir::attribute(ir::retune);
   error_not_implemented("attribute " + std::to_string(attr.kind) + " not implemented");
   return ir::attribute(ir::not_implemented);
 }
diff --git a/lib/lang/parser.cc b/lib/lang/parser.cc
index ba85a04cf..c3f9c5ab7 100644
--- a/lib/lang/parser.cc
+++ b/lib/lang/parser.cc
@@ -2778,6 +2778,8 @@ ASTNode::Attr Parser::ParseAttribute() {
     ret.kind = ASTNode::Attr::MULTIPLEOF;
   else if(name == "noalias")
     ret.kind = ASTNode::Attr::NOALIAS;
+  else if(name == "retune")
+    ret.kind = ASTNode::Attr::RETUNE;
   else
     Error(tok, "unknown attribute kind");
   // set exprs
diff --git a/lib/runtime/function.cc b/lib/runtime/function.cc
index fb2daea43..a176927ee 100644
--- a/lib/runtime/function.cc
+++ b/lib/runtime/function.cc
@@ -151,27 +151,23 @@ function::caller::caller(ir::function *ir,
   bin_.reset(driver::kernel::create(&*parent, name_.c_str()));
   // extract signature
   ir::function_type* ty = ir->get_fn_type();
-  for(size_t i = 0; i < ty->get_num_params(); i++)
+  for(size_t i = 0; i < ty->get_num_params(); i++){
     param_tys_.push_back(convert(ty->get_param_ty(i)));
+    if(!ir->has_attr(i+1))
+      continue;
+    for(ir::attribute attr: ir->attrs().at(i + 1))
+      if(attr.get_kind() == ir::retune)
+        retune_.push_back(i);
+  }
 }
 
 
-void function::caller::operator ()(driver::stream *stream, const grid_t& _grid, const std::vector<arg>& args) const {
-  if(args.size() != param_tys_.size())
-    throw std::runtime_error("invalid number of arguments");
-  // set arguments
-  for(size_t i = 0; i < args.size(); i++){
-    arg arg_i = args.at(i);
-    arg_type ty = arg_i.type();
-    if(ty != param_tys_.at(i))
-      throw std::runtime_error("invalid type for argument " + std::to_string(i));
-    if(ty == BUFFER_T){
-      driver::buffer* buf = *((driver::buffer**)arg_i.data());
-      bin_->setArg(i, buf->size() == 0 ? nullptr : buf);
-    }
-    else
-      bin_->setArg(i, size_of(ty), arg_i.data());
-  }
+void function::caller::operator ()(driver::stream *stream, const grid_t& _grid, void** args, size_t args_size) const {
+  void *config[] = {
+      CU_LAUNCH_PARAM_BUFFER_POINTER, args,
+      CU_LAUNCH_PARAM_BUFFER_SIZE,    &args_size,
+      CU_LAUNCH_PARAM_END
+  };
   // set grid
   if(_grid.size() > 3)
     throw std::runtime_error("grid size must be no greater than 3");
@@ -179,7 +175,7 @@ void function::caller::operator ()(driver::stream *stream, const grid_t& _grid,
   for(size_t i = 0; i < 3; i++)
     grid[i] = (i < _grid.size()) ? _grid[i] : 1;
   // enqueue
-  stream->enqueue(&*bin_, grid, {opt_.num_warps * 32, 1, 1});
+  stream->enqueue(&*bin_, grid, {opt_.num_warps * 32, 1, 1}, NULL, NULL, config);
 }
 
 
@@ -251,20 +247,6 @@ std::unique_ptr<driver::module> function::make_bin(ir::module &module,
 
 // create Binary from options
 function::caller* function::make(driver::stream *stream, options_t opt) {
-  // cache path
-  std::string cache_path = cache_path_ + opt.to_str() + ".ptx";
-  int ref_mtime = tools::mtime(cache_ref_);
-  int ptx_mtime = tools::mtime(cache_path);
-  // if cached ptx is newer than reference library
-  if(!ref_mtime || !ptx_mtime || ref_mtime < ptx_mtime){
-    std::ifstream ifs(cache_path);
-    // file is empty -- invalid
-    if(ifs && ifs.peek() == std::ifstream::traits_type::eof())
-      return nullptr;
-    // load cached caller
-    if(ifs)
-      return new caller(stream->context(), ifs, opt);
-  }
   // pre-process
   TokenSequence tokens;
   Preprocessor cpp(&src_, true);
@@ -281,18 +263,11 @@ function::caller* function::make(driver::stream *stream, options_t opt) {
   try{
     bin = make_bin(*ir, stream->context(), opt);
   }catch(const std::runtime_error&){
-    if(!cache_path_.empty())
-      std::ofstream ofs(cache_path);
     return nullptr;
   }
   // create callable
   ir::function *tmp = ir->get_function_list()[0];
   caller* ret = new caller(tmp, std::move(bin), opt);
-  // serialize callable
-  if(!cache_path_.empty()){
-    std::ofstream ofs(cache_path);
-    ret->write(ofs);
-  }
   return ret;
 }
 
@@ -330,48 +305,20 @@ void function::precompile(driver::stream* stream,
     throw std::runtime_error("could not compile kernel");
 }
 
-// return auto-tuning key for given function arguments
-function::cache_key_t function::get_key(driver::stream *stream, const std::vector<arg>& args) {
-  cache_key_t ret;
-  ret.first = stream->context()->device();
-  for(size_t i = 0; i < args.size(); i++){
-    arg_type ty = args.at(i).type();
-    if(!is_int_type(ty))
-      continue;
-    long val = 0;
-    std::memcpy((void*)&val, args.at(i).data(), size_of(ty));
-    ret.second.push_back(val);
-  }
-  return ret;
-}
 // returns program with best compilation options for given parameter
 function::caller* function::autotune(driver::stream* stream, const grid_fn_ty& grid_fn,
-                                       const std::vector<arg>& args) {
+                                     void** args, size_t args_size) {
   // fast path -- no autotuning necessary
   if(callers_.size() == 1)
     return &*callers_.begin()->second;
-  // slow path -- autotuning necessary
-  // copy buffer argument so that auto-tuning doesn't corrupt data
-  std::list<std::shared_ptr<driver::cu_buffer>> copies;
-  std::vector<arg> _args = args;
-  for(size_t i = 0; i < args.size(); i++)
-    if(_args[i].type() == BUFFER_T){
-      driver::buffer* old = _args[i].buffer();
-      size_t size = old->size();
-      // only copy scalars
-      // TODO: change that
-      if(size != 4 && size != 2)
-        continue;
-      copies.push_back(std::make_shared<driver::cu_buffer>(old->context(), size));
-      _args[i] = arg(copies.back().get());
-    }
+  // TODO" copy buffer argument so that auto-tuning doesn't corrupt data
   double best_ts = INFINITY;
   caller* ret = nullptr;
   for(auto &x : callers_){
     if(x.second == nullptr)
       throw std::runtime_error("configuration not compiled");
     caller* current = &*x.second;
-    double ts = tools::bench([&]() { (*current)(stream, grid_fn(x.first), args); },
+    double ts = tools::bench([&]() { (*current)(stream, grid_fn(x.first), args, args_size); },
                                      stream, true);
     ret = (ts < best_ts) ? current : ret;
     best_ts = std::min(ts, best_ts);
@@ -397,6 +344,7 @@ std::string function::preheader() {
 #define __noalias       __attribute__((noalias))
 #define __aligned(A)    __attribute__((aligned(A)))
 #define __multipleof(A) __attribute__((multipleof(A)))
+#define __retune        __attribute__((retune))
 
 #define F32_INFINITY bitcast<float>(0x7F800000)
 #define F16_INFINITY bitcast<half>((int16)0x7C00)
@@ -456,27 +404,35 @@ function::function(const std::string &src,
   src_ = preheader() + src_;
 }
 
-void function::operator()(const std::vector<arg>& args,
-                          const grid_fn_ty& grid_fn,
-                          driver::stream *stream) {
+void function::operator()(void** args, size_t args_size, const grid_fn_ty& grid_fn, driver::stream *stream) {
   // pre-compile kernels
-  if(callers_.empty())
+  if(callers_.empty()){
     precompile(stream, opt_);
+    size_t cumsum = 0;
+    for(arg_type ty: callers_.begin()->second->param_tys()){
+      args_off_.push_back(cumsum);
+      cumsum += size_of(ty);
+    }
+  }
+  // re-tuning key
+  cache_key_t key;
+  key.first = stream->context()->device();
+  key.second = callers_.begin()->second->retune();
   // auto-tune if necessary
-  auto key = get_key(stream, args);
   auto it = cache_.find(key);
   if(it == cache_.end()){
-    auto best = autotune(stream, grid_fn, args);
+    auto best = autotune(stream, grid_fn, args, args_size);
     it = cache_.insert({key, best}).first;
   }
   // run
-  (*it->second)(stream, grid_fn(it->second->opt()), args);
+  (*it->second)(stream, grid_fn(it->second->opt()), args, args_size);
 }
 
-void function::operator()(const std::vector<arg>& args,
+void function::operator()(void** args,
+                          size_t args_size,
                           const grid_t& grid,
                           driver::stream *stream) {
-  return this->operator()(args, [&grid](const options_t&){ return grid; }, stream);
+  return this->operator()(args, args_size, [&grid](const options_t&){ return grid; }, stream);
 }
 
 
diff --git a/python/examples/tutorials/conv2d.py b/python/examples/tutorials/conv2d.py
index 34c5d41ed..8e8f38491 100644
--- a/python/examples/tutorials/conv2d.py
+++ b/python/examples/tutorials/conv2d.py
@@ -8,7 +8,9 @@ class _conv(torch.autograd.Function):
                          TYPE *C __noalias __aligned(16), 
                          float alpha,
                          // equivalent matmul
-                         int M, int N, int K,
+                         int M __retune,
+                         int N __retune,
+                         int K __retune,
                          // convolution properties
                          int pad_h, int pad_w, int stride_h, int stride_w,
                          // pointer increment
@@ -197,4 +199,4 @@ c = conv(a, b, pad, stride, time)
 print((cc - c).abs().max() / max(cc.max(), c.max()))
 print(time[0], 2*Z*H*W*CI*CO*R*S/(time[0]*1e-9)*1e-12)
 #zc  = torch.matmul(a,b)
-#zc_ = dot(a,b)
\ No newline at end of file
+#zc_ = dot(a,b)
diff --git a/python/examples/tutorials/mat_copy.py b/python/examples/tutorials/mat_copy.py
index 5eeca842f..7c5276242 100644
--- a/python/examples/tutorials/mat_copy.py
+++ b/python/examples/tutorials/mat_copy.py
@@ -4,7 +4,9 @@ import triton
 class _copy(torch.autograd.Function):
     src = """
     __global__ void copy(TYPE * X, TYPE * Y,
-                                  int M, int N, int ldx __multipleof(8)) {
+                         int M __retune,
+                         int N __retune,
+                         int ldx __multipleof(8)) {
           // extract program ID
           int pidm = get_program_id(0); //(1)
           int pidn = get_program_id(1); //(2)
diff --git a/python/examples/tutorials/mat_mul.py b/python/examples/tutorials/mat_mul.py
index 419a61f51..78ecb9712 100644
--- a/python/examples/tutorials/mat_mul.py
+++ b/python/examples/tutorials/mat_mul.py
@@ -7,7 +7,9 @@ class _dot(torch.autograd.Function):
                         TYPE *B __noalias __readonly __aligned(16), 
                         TYPE *C __noalias __aligned(16), 
                         float alpha,
-                        int M, int N, int K,
+                        int M __retune,
+                        int N __retune,
+                        int K __retune,
                         int lda __multipleof(8), 
                         int ldb __multipleof(8), 
                         int ldc __multipleof(8)) {
@@ -128,4 +130,4 @@ b = torch.rand((K, N)).cuda()
 #zc  = torch.matmul(a,b)
 zc_ = dot(a,b)
 
-#print(torch.allclose(zc, zc_))
\ No newline at end of file
+#print(torch.allclose(zc, zc_))
diff --git a/python/examples/tutorials/mat_transpose.py b/python/examples/tutorials/mat_transpose.py
index 39f05c902..be31cd2cc 100644
--- a/python/examples/tutorials/mat_transpose.py
+++ b/python/examples/tutorials/mat_transpose.py
@@ -4,7 +4,9 @@ import triton
 class _transpose(torch.autograd.Function):
     src = """
     __global__ void transpose(TYPE * X, TYPE * Y,
-                                  int M, int N, int ldx __multipleof(8), int ldy __multipleof(8)) {
+                              int M __retune,
+                              int N __retune,
+                              int ldx __multipleof(8), int ldy __multipleof(8)) {
           // extract program ID
           int pidm = get_program_id(0); //(1)
           int pidn = get_program_id(1); //(2)
diff --git a/python/setup.py b/python/setup.py
index 1d32ad4c4..01f0c3049 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -8,9 +8,11 @@ import distutils
 import glob
 from distutils.version import LooseVersion
 from setuptools import setup, Extension, find_packages
+from torch.utils.cpp_extension import include_paths, library_paths
 from setuptools.command.build_ext import build_ext
 from setuptools.command.test import test as TestCommand
 import distutils.spawn
+import torch
 
 
 def find_llvm():
@@ -58,12 +60,17 @@ class CMakeBuild(build_ext):
         # python directories
         python_include_dirs = distutils.sysconfig.get_python_inc()
         python_lib_dirs = distutils.sysconfig.get_config_var('LIBDIR')
+        torch_include_dirs = include_paths(True)
+        torch_library_dirs = library_paths(True)
+        abi = torch._C._GLIBCXX_USE_CXX11_ABI
         cmake_args = ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=' + extdir,
                       '-DBUILD_TESTS=OFF',
                       '-DBUILD_PYTHON_MODULE=ON',
                       #'-DPYTHON_EXECUTABLE=' + sys.executable,
                       #'-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON,
-                      '-DPYTHON_INCLUDE_DIRS=' + python_include_dirs,
+                      '-DPYTHON_INCLUDE_DIRS=' + ';'.join([python_include_dirs] + include_paths(True)),
+                      '-DPYTHON_LINK_DIRS=' + ';'.join(library_paths(True)),
+                      '-DTORCH_LIBRARIES=c10;c10_cuda;torch;torch_cuda;torch_cpu;torch_python;triton',
                       '-DLLVM_CONFIG=' + find_llvm()]
         # configuration
         cfg = 'Debug' if self.debug else 'Release'
@@ -80,8 +87,6 @@ class CMakeBuild(build_ext):
             build_args += ['--', '-j4']
 
         env = os.environ.copy()
-        env['CXXFLAGS'] = '{} -DVERSION_INFO=\\"{}\\"'.format(env.get('CXXFLAGS', ''),
-                                                              self.distribution.get_version())
         if not os.path.exists(self.build_temp):
             os.makedirs(self.build_temp)
         sourcedir =  os.path.abspath(os.path.join(os.path.dirname(__file__), 'src'))
diff --git a/python/src/bindings.cc b/python/src/bindings.cc
index ec4c1c6a1..b14f8cad4 100644
--- a/python/src/bindings.cc
+++ b/python/src/bindings.cc
@@ -3,20 +3,13 @@
 #include <pybind11/stl.h>
 #include <pybind11/functional.h>
 #include <string>
-#include <regex>
-#include <algorithm>
 #include "triton/runtime/function.h"
 #include "triton/runtime/arg.h"
 #include "triton/lang/code_gen.h"
 #include "triton/lang/parser.h"
 #include "triton/lang/cpp.h"
-#include "triton/driver/device.h"
-#include "triton/driver/stream.h"
-#include "triton/driver/kernel.h"
-#include "triton/driver/module.h"
 #include "triton/ir/module.h"
 #include "triton/ir/function.h"
-#include "triton/tools/bench.hpp"
 
 using namespace triton;
 
@@ -83,196 +76,6 @@ int64_t retrieve_scalar(size_t id) {
   return i64scalar_map.at(id);
 }
 
-/* TF source-code generation */
-
-inline std::string to_tf_ty(ir::type *ty) {
-  if(ty->is_integer_ty(1))
-    return "bool";
-  if(ty->is_integer_ty(8))
-    return "int8";
-  if(ty->is_integer_ty(16))
-    return "int16";
-  if(ty->is_integer_ty(32))
-    return "int32";
-  if(ty->is_integer_ty(64))
-    return "int64";
-  if(ty->is_half_ty())
-    return "float16";
-  if(ty->is_float_ty())
-    return "float";
-  if(ty->is_double_ty())
-    return "double";
-  if(ty->is_pointer_ty())
-    return "Tensor";
-  throw std::runtime_error("unknown type");
-}
-
-inline std::string to_tf_scalar_ty(ir::type *ty) {
-  if(ty->is_pointer_ty())
-    return to_tf_ty(ty->get_pointer_element_ty());
-  else {
-    return to_tf_ty(ty);
-  }
-}
-
-inline std::string ref_to_tf_ty(ir::type *ty) {
-  std::string res = to_tf_ty(ty);
-  if(ty->is_pointer_ty())
-    res = "const " + res + "&";
-  return res;
-}
-
-std::string tf_normalize(const std::string& name) {
-  std::string ret = name;
-  auto tolower = [](char c) { return std::tolower(c);};
-  std::transform(ret.begin(), ret.end(), ret.begin(), tolower);
-  return ret;
-}
-
-struct tf_alloc_t{
-  enum type_t{
-    OUTPUT,
-    TEMP
-  };
-
-  tf_alloc_t(const std::string& _name, type_t _type)
-    : name(_name), type(_type), tf_name(tf_normalize(_name)){ }
-
-  std::string tf_name;
-  std::string name;
-  type_t type;
-  size_t shape_id;
-};
-
-typedef std::vector<tf_alloc_t> alloc_map_t;
-
-
-void gen_extract_inputs(std::ostream &os, const std::vector<ir::argument*>& args, const alloc_map_t& allocs) {
-  for(unsigned i = 0; i < args.size(); i++){
-    ir::value *arg = args[i];
-    const std::string& name = arg->get_name();
-    std::string ty = to_tf_ty(arg->get_type());
-    if(!arg->get_type()->is_pointer_ty())
-      os << "  " << ty << " " << name << " = context->input(" << i << ").scalar<" << ty << ">()();\n  ";
-    else if(std::find_if(allocs.begin(), allocs.end(), 
-                         [&](tf_alloc_t x) { 
-                              return x.name == name; 
-                             }) == allocs.end())
-      os << "  const Tensor* " << name << " = &context->input(" << i << ");\n  ";
-    else
-      os << "  Tensor* " << name << " = nullptr;\n  ";
-  }
-}
-
-void gen_set_outputs(std::ostream &os, const std::vector<ir::argument*>& args, const alloc_map_t& allocs) {
-  // initialize shapes
-  for(const auto& x: allocs)
-    os << "  TensorShape " << x.name << "_shape;\n  ";  
-  for(const auto& x: allocs)
-    os << "  const Tensor& " << x.name << "_shape_tensor = context->input(" << x.shape_id << ");\n  ";
-  for(const auto& x: allocs)
-    os << "  const int32* " << x.name << "_shape_data = (const int32*)" << x.name << "_shape_tensor.tensor_data().data();\n  ";
-  for(const auto& x: allocs)
-    os << "  size_t " << x.name << "_rank = " << x.name << "_shape_tensor.dim_size(0);\n  ";
-  for(const auto& x: allocs)
-    os << "  for(size_t d = 0; d < " << x.name << "_rank ; d++) "
-        <<  x.name << "_shape.AddDim(" << x.name << "_shape_data[d]);\n  ";
-  
-  // allocate
-  int output = 0;
-  for(const auto& x: allocs){
-    if(x.type == tf_alloc_t::OUTPUT)
-      os << "  OP_REQUIRES_OK(context, context->allocate_output(" << output++ << ", " << x.name << "_shape, &" << x.name << "));\n  ";
-    else
-      os << "  OP_REQUIRES_OK(context, context->allocate_temp(" << x.name << "_type, " << x.name << "_shape, " << x.name << "));\n  ";
-  }
-}
-
-void gen_make_handles(std::ostream &os, const std::vector<ir::argument*>& args) {
-  for(unsigned i = 0; i < args.size(); i++){
-    ir::argument *arg = args[i];
-    if(!arg->get_type()->is_pointer_ty())
-      continue;
-    const std::string& name = arg->get_name();
-    os << "  drv::cu_buffer cu_" + name + "(ctx, " + name + "->nbytes(), (CUdeviceptr)" + name + "->tensor_data().data(), false);\n  ";
-  }
-}
-
-void gen_make_launch_function(std::ostream &os, const std::vector<ir::argument*>& args) {
-  os << "  std::function<void()> run = [&](){\n  ";
-  os << "    (*id_fn_map.at(id_))({";
-  for(unsigned i = 0; i < args.size() ; i++){
-    ir::argument *arg = args[i];
-    std::string name = arg->get_name();
-    if(arg->get_type()->is_pointer_ty())
-      name = "&cu_" + name;
-    if(i > 0)
-      os << ", ";
-    os << name;
-  }
-  os << "}, *id_grid_map.at(id_), stream);\n  ";
-  os << "  };\n  ";
-  os << "  run();\n  ";
-  os << "  if(bench_ > 0)\n  ";
-  os << "    i64scalar_map[bench_id_] = triton::tools::bench(run, stream);\n  ";
-}
-
-void gen_tf_register_kernel_builder(std::ostream &os, const std::string &name,
-                                 const std::string &opname,
-                                 const std::vector<ir::argument*>& args,
-                                 const alloc_map_t& allocs){
-
-  os << "REGISTER_KERNEL_BUILDER(Name(\"" + name + "\").Device(DEVICE_GPU)";
-  for(size_t i = 0; i < args.size(); i++){
-    ir::argument *arg = args[i];
-    std::string name = tf_normalize(arg->get_name());
-    if(!arg->get_type()->is_pointer_ty())
-      os << ".HostMemory(\"" + name + "\")";
-  }
-  for(const auto& x: allocs)
-    os << ".HostMemory(\"" << x.tf_name << "_shape\")";
-  os <<  ", " + opname << ");\n";
-}
-
-void gen_tf_register_op(std::ostream &os, const std::string &name,
-                     const std::vector<ir::argument*>& args,
-                     const alloc_map_t& allocs){
-  
-  
-  os << "REGISTER_OP(\"" << name << "\")\n";
-  for(size_t i = 0; i < args.size(); i++)
-    os << "  .Attr(\"T" << i << " : {bool, int8, int16, int32, int64, float16, float32, float64}\")" << std::endl;
-  for(size_t i = 0; i < args.size(); i++){
-    ir::argument *arg = args[i];
-    std::string name = tf_normalize(arg->get_name());
-    if(std::find_if(allocs.begin(), allocs.end(),
-                    [&](tf_alloc_t x) { 
-                      return name == x.tf_name;
-                    }) == allocs.end())
-      os << "  .Input(\"" << name << ": T" << i << "\")\n";
-    else
-      os << "  .Input(\"" << name << "_shape: int32\")\n";
-  }
-  for(const auto& x: allocs)
-    if(x.type == tf_alloc_t::OUTPUT)
-      os << "  .Output(\"" << x.tf_name << ": T" << x.shape_id << "\")\n";
-  os << "  .Attr(\"id: int\")\n";
-  os << "  .Attr(\"bench: int\")\n";
-  os << "  .Attr(\"bench_id: int\")\n";
-  os << "  .SetShapeFn([](::tensorflow::shape_inference::InferenceContext* ctx) {\n";
-  size_t current = 0;
-  for(const auto& x: allocs)
-    if(x.type == tf_alloc_t::OUTPUT){
-      os << "    shape_inference::ShapeHandle " << x.tf_name << "_handle;\n";
-      os << "    ctx->MakeShapeFromShapeTensor(" << x.shape_id << ", &" << x.tf_name << "_handle);\n";
-      os << "    ctx->set_output(" << current++ << ", " << x.tf_name << "_handle);\n";
-    }
-  os << "      return Status::OK();\n";
-  os << "  })\n";
-
-  os << ";\n";
-}
-
 void make_module(const std::string& src, ir::module* ir,
                  const runtime::function::options_space_t& opt) {
   std::string copy = triton::runtime::function::preheader() + src;
@@ -290,339 +93,6 @@ void make_module(const std::string& src, ir::module* ir,
   gen.Gen(ir);
 }
 
-std::tuple<std::string,
-           std::string> make_tensorflow_src(const std::string& src,
-                                const std::vector<std::string>& outputs,
-                                const std::vector<std::string>& tmp,
-                                const runtime::function::options_space_t& opt)
-{
-  // triton-ir code-gen
-  ir::context ctx;
-  auto ir = std::shared_ptr<ir::module>(new ir::module("", ctx));
-  make_module(src, &*ir, opt);
-
-  // function
-  ir::function* fn = ir->get_function_list().front();
-  const std::vector<ir::argument*>& args = fn->args();
-  std::string name = fn->get_name();
-  std::string cc_name = name;
-  cc_name[0] = static_cast<char>(std::toupper(cc_name[0]));
-  std::string opname = cc_name + "Op";
-  
-  // allocation info
-  alloc_map_t allocs;
-  for(size_t i = 0; i < outputs.size(); i++)
-    allocs.push_back(tf_alloc_t(outputs[i], tf_alloc_t::OUTPUT));
-  for(size_t i = 0; i < tmp.size(); i++)
-    allocs.push_back(tf_alloc_t(tmp[i], tf_alloc_t::TEMP));
-
-  for(auto &x: allocs){
-    size_t idx;
-    for(idx = 0; idx < args.size(); idx++)
-      if(args[idx]->get_name() == x.name)
-        break;
-    if(idx == args.size())
-      throw std::runtime_error("unknown output");
-    x.shape_id = idx;
-  }
-
-  std::ostringstream oss;
-  oss << R"(
-#include "triton/driver/buffer.h"
-#include "triton/driver/backend.h"
-#include "triton/driver/stream.h"
-#include "triton/runtime/function.h"
-#include "triton/tools/bench.hpp"
-
-#define EIGEN_USE_GPU
-#include "tensorflow/core/framework/op.h"
-#include "tensorflow/core/framework/shape_inference.h"
-#include "tensorflow/core/framework/op_kernel.h"
-
-using namespace tensorflow;
-using GPUDevice = Eigen::GpuDevice;
-namespace rt = triton::runtime;
-namespace drv = triton::driver;
-
-extern std::map<size_t, std::shared_ptr<rt::function::grid_fn_ty>> id_grid_map;
-extern std::map<size_t, std::shared_ptr<rt::function>> id_fn_map;
-extern std::map<size_t, int64_t> i64scalar_map;
-
-class )" << opname << R"(: public OpKernel {
- public:
-  explicit )" << opname << R"((OpKernelConstruction* context)
-    : OpKernel(context) {
-    OP_REQUIRES_OK(context, context->GetAttr("id", &id_));
-    OP_REQUIRES_OK(context, context->GetAttr("bench", &bench_));
-    OP_REQUIRES_OK(context, context->GetAttr("bench_id", &bench_id_));
-  )";
-for(const auto& alloc: allocs)
-  oss << "  OP_REQUIRES_OK(context, context->GetAttr(\"T" << alloc.shape_id << "\", &" << alloc.name << "_type));\n  ";
-
-oss << R"(
-  }
-
-  void Compute(OpKernelContext* context){
-
-    // get device/stream
-    GPUDevice device =  context->eigen_device<GPUDevice>();
-    drv::cu_stream sstream(device.stream(), false);
-    drv::context* ctx = sstream.context();
-    drv::stream* stream = &sstream;
-    
-    // extract inputs
-    )";
-gen_extract_inputs(oss, args, allocs);
-oss << R"(
-    // set outputs
-    )";
-gen_set_outputs(oss, args, allocs);
-oss << R"(
-    // wrap tensors
-    )";
-gen_make_handles(oss, args);
-oss << R"(
-    )";
-oss << R"(
-    // launch function
-    )";
-gen_make_launch_function(oss, args);
-oss << R"(
-  }
-
-private:
-  int id_;
-  int bench_;
-  int64 bench_id_;
-  )";
-for(const auto& alloc: allocs)
-  oss << "DataType " << alloc.name << "_type;\n  ";
-  
-oss << R"(
-};
-
-// register kernel builder
-)";
-gen_tf_register_kernel_builder(oss, cc_name, opname, args, allocs);
-oss << R"(
-// register op
-)";
-gen_tf_register_op(oss, cc_name, args, allocs);
-
-  return std::tuple<std::string, std::string>{oss.str(), name};
-}
-
-
-inline std::string to_torch_ty(ir::type *ty) {
-  if(ty->is_integer_ty())
-    return "int64_t";
-  if(ty->is_half_ty())
-    return "double";
-  if(ty->is_float_ty())
-    return "double";
-  if(ty->is_double_ty())
-    return "double";
-  if(ty->is_pointer_ty())
-    return "torch::Tensor";
-  throw std::runtime_error("unknown type");
-}
-
-inline std::string to_torch_ty(rt::arg_type ty){
-  switch(ty){
-    case rt::INT1_T:   return "int64_t";
-    case rt::INT8_T:   return "int64_t";
-    case rt::INT16_T:  return "int64_t";
-    case rt::INT32_T:  return "int64_t";
-    case rt::INT64_T:  return "int64_t";
-    case rt::HALF_T:   return "double";
-    case rt::FLOAT_T:  return "double";
-    case rt::DOUBLE_T: return "double";
-    case rt::BUFFER_T: return "torch::Tensor";
-    default:           return "UNKNOWN";
-  }
-}
-
-inline std::string to_c_ty(rt::arg_type ty){
-  switch(ty){
-    case rt::INT1_T:   return "bool";
-    case rt::INT8_T:   return "int8_t";
-    case rt::INT16_T:  return "int16_t";
-    case rt::INT32_T:  return "int32_t";
-    case rt::INT64_T:  return "int64_t";
-    case rt::HALF_T:   return "half";
-    case rt::FLOAT_T:  return "float";
-    case rt::DOUBLE_T: return "double";
-    case rt::BUFFER_T: return "drv::cu_buffer";
-    default:           return "UNKNOWN";
-  }
-}
-
-
-inline std::string to_c_ty(ir::type *ty) {
-  if(ty->is_integer_ty(1))
-    return "bool";
-  if(ty->is_integer_ty(8))
-    return "int8_t";
-  if(ty->is_integer_ty(16))
-    return "int16_t";
-  if(ty->is_integer_ty(32))
-    return "int32_t";
-  if(ty->is_integer_ty(64))
-    return "int64_t";
-  if(ty->is_half_ty())
-    return "half";
-  if(ty->is_float_ty())
-    return "float";
-  if(ty->is_double_ty())
-    return "double";
-  if(ty->is_pointer_ty())
-    return "drv::cu_buffer";
-  throw std::runtime_error("unknown type");
-}
-
-
-
-void gen_torch_signature(std::ostringstream& oss,
-                         const std::string& name,
-                         const std::vector<rt::arg_type>& args) {
-  std::string ret_ty = "void";
-  oss << ret_ty << " " << name << "(";
-  oss << "int64_t id, ";
-  oss << "int64_t dev_id, ";
-  oss << "int64_t bench, ";
-  oss << "int64_t bench_id,  ";
-  for(size_t i = 0; i < args.size(); i++) {
-    if(i > 0)
-      oss << ", ";
-    oss << to_torch_ty(args[i]) << " " << "th_arg_" << i;
-  }
-  oss << ")";
-}
-
-void gen_torch_init_driver(std::ostringstream &oss,
-                           const std::vector<rt::arg_type>&args) {
-  // Find index of first buffer
-  size_t i;
-  for(i = 0; i < args.size(); i++)
-    if(args[i] == rt::BUFFER_T)
-      break;
-  oss <<  "  // Wrap CUDA handles" << std::endl;
-  oss <<  "  c10::DeviceIndex device = th_arg_" << i << ".storage().device().index();" << std::endl;
-  oss <<  "  // Get stream" << std::endl;
-  oss <<  "  CUstream custream = (CUstream)at::cuda::getCurrentCUDAStream(device).stream();" << std::endl;
-  oss <<  "  triton::driver::cu_stream stream(custream, false);" << std::endl;
-  oss <<  "  triton::driver::context* ctx = stream.context();" << std::endl;
-}
-
-void gen_torch_make_handles(std::ostream &os,
-                            const std::vector<rt::arg_type>& args) {
-  for(unsigned i = 0; i < args.size(); i++){
-    rt::arg_type arg = args[i];
-    const std::string th_name = "th_arg_" + std::to_string(i);
-    const std::string name = "arg_" + std::to_string(i);
-    if(arg != rt::BUFFER_T)
-      os << "  " << to_c_ty(arg) << " " << name << " = " << th_name << ";" << std::endl;
-    else{
-      os << "  CHECK_INPUT(" << th_name << ");" << std::endl;
-      os << "  drv::cu_buffer " + name + "(ctx, " + th_name + ".nbytes(), "
-            " (CUdeviceptr)((char*)" + th_name + ".storage().data() + " + th_name + ".storage_offset() * " + th_name + ".itemsize()), false);" << std::endl;
-    }
-  }
-}
-
-std::string get_val_struct_name(rt::arg_type ty){
-  switch(ty){
-    case rt::INT1_T: return "int1";
-    case rt::INT8_T: return "int8";
-    case rt::INT16_T: return "int16";
-    case rt::INT32_T: return "int32";
-    case rt::INT64_T: return "int64";
-    case rt::HALF_T: return "fp16";
-    case rt::FLOAT_T: return "fp32";
-    case rt::DOUBLE_T: return "fp64";
-    case rt::BUFFER_T: return "buf";
-    default: return "";
-  }
-}
-
-void gen_torch_make_launch_function(std::ostream &os, 
-                                    const std::vector<rt::arg_type>& args) {
-  os << "  namespace rt = triton::runtime;\n  ";
-  os << "  std::vector<rt::arg> args;\n  ";
-  for(unsigned i = 0; i < args.size(); i++){
-    std::string name = "arg_" + std::to_string(i);
-    if(args[i] == rt::BUFFER_T)
-      name = "&" + name;
-    if(args[i] == rt::HALF_T)
-      name = "*((uint16_t*)&" + name + ")";
-    os << "rt::arg_type ty" << i << " = (rt::arg_type)(" << args[i] << ");\n  ";
-    os << "rt::arg::value_t val" << i << ";\n  ";
-    os << "val" << i << "." << get_val_struct_name(args[i]) << " = " << name << ";\n  ";
-    os << "args.push_back(rt::arg(ty" << i << ", val" << i << "));\n  ";
-  }
-  os << "  std::function<void()> run = [&](){\n  ";
-  os << "    (*id_fn_map.at({id, dev_id}))(args , *id_grid_map.at({id, dev_id}), &stream);\n";
-  os << "  };\n";
-  os << "  run();\n";
-  os << "  if(bench > 0)\n  ";
-  os << "    i64scalar_map[bench_id] = triton::tools::bench(run, &stream);\n  ";
-  }
-
-void gen_torch_ret(std::ostream &os, const std::vector<std::string>& outputs) {
-  if(outputs.size() == 1){
-    os << "  return " << outputs[0] << ";" << std::endl;
-    return;
-  }
-  os << "  return {";
-  for(size_t i = 0; i < outputs.size(); i++){
-    if(i > 0)
-      os << ", ";
-    os << outputs[i];
-  }
-  os << "};" << std::endl;
-}
-
-std::tuple<std::string,
-           std::string> make_torch_src(const std::string& name, std::vector<rt::arg_type> args) {
-  // generate framework code
-  std::ostringstream oss;
-  oss << R"(
-#include "triton/driver/buffer.h"
-#include "triton/driver/stream.h"
-#include "triton/runtime/function.h"
-#include "triton/tools/bench.hpp"
-#include "torch/script.h"
-#include "ATen/cuda/CUDAContext.h"
-
-#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be a CUDA tensor")
-#define CHECK_CONTIGUOUS(x) AT_ASSERTM(x.is_contiguous(), #x " must be contiguous")
-#define CHECK_INPUT(x) CHECK_CUDA(x);
-
-namespace rt = triton::runtime;
-namespace drv = triton::driver;
-
-typedef std::pair<size_t, size_t> map_key_t;
-extern std::map<map_key_t, std::shared_ptr<rt::function::grid_fn_ty>> id_grid_map;
-extern std::map<map_key_t, std::shared_ptr<rt::function>> id_fn_map;
-extern std::map<size_t, int64_t> i64scalar_map;
-
-)";
-
-  gen_torch_signature(oss, name, args);
-  oss << " {" << std::endl;
-  gen_torch_init_driver(oss, args);
-  gen_torch_make_handles(oss, args);
-  gen_torch_make_launch_function(oss, args);
-  //gen_torch_ret(oss);
-  oss << "}" << std::endl;
-
-  oss << std::endl;
-  oss << std::endl;
-  oss << "static auto registry = torch::RegisterOperators(\"triton::" << name << "\", &" << name << ");" << std::endl;
-
-  return std::tuple<std::string, std::string>{oss.str(), name};
-}
-
 /* Function signature */
 std::vector<rt::arg_type> get_fn_signature(const std::string& src,
                                            const runtime::function::options_space_t& opt) {
@@ -646,13 +116,6 @@ typedef triton::runtime::function::options_space_t options_space_t;
 PYBIND11_MODULE(libtriton, m) {
     m.doc() = "Python bindings to the C++ Triton API";
 
-    // framework binding source code generation
-    m.def("make_tensorflow_src", &make_tensorflow_src,
-          "Creates C++ source code for a custom Tensorflow op "
-          "corresponding to the specified Triton kernel");
-    m.def("make_torch_src", &make_torch_src,
-          "Creates C++ source code for a custom PyTorch op ");
-
     // bindings for triton classes
     pybind11::enum_<rt::arg_type>(m, "arg_type")
         .value("int1", rt::INT1_T)
diff --git a/python/src/launch.cc b/python/src/launch.cc
new file mode 100644
index 000000000..1911bc7b3
--- /dev/null
+++ b/python/src/launch.cc
@@ -0,0 +1,27 @@
+#include "triton/driver/buffer.h"
+#include "triton/driver/stream.h"
+#include "triton/runtime/function.h"
+#include "triton/tools/bench.hpp"
+#include "torch/script.h"
+#include "ATen/cuda/CUDAContext.h"
+
+#define CHECK_CUDA(x) AT_ASSERTM(x.type().is_cuda(), #x " must be a CUDA tensor")
+#define CHECK_CONTIGUOUS(x) AT_ASSERTM(x.is_contiguous(), #x " must be contiguous")
+#define CHECK_INPUT(x) CHECK_CUDA(x);
+
+namespace rt = triton::runtime;
+namespace drv = triton::driver;
+
+typedef std::pair<size_t, size_t> map_key_t;
+extern std::map<map_key_t, std::shared_ptr<rt::function::grid_fn_ty>> id_grid_map;
+extern std::map<map_key_t, std::shared_ptr<rt::function>> id_fn_map;
+
+void launch_kernel(int64_t op_id, int64_t dev_id, const std::string& args){
+  CUstream custream = (CUstream)at::cuda::getCurrentCUDAStream(dev_id).stream();
+  triton::driver::cu_stream stream(custream, false);
+  triton::driver::context* ctx = stream.context();
+  (*id_fn_map.at({op_id, dev_id}))((void**)args.c_str(), args.size(), *id_grid_map.at({op_id, dev_id}), &stream);
+}
+
+
+static auto registry = torch::RegisterOperators("triton::launch_kernel", &launch_kernel);
diff --git a/python/triton/__init__.py b/python/triton/__init__.py
index 535f717ec..afaa70ecd 100644
--- a/python/triton/__init__.py
+++ b/python/triton/__init__.py
@@ -1,7 +1,6 @@
 from .kernel import *
-from .utils import *
-import triton.ops
-import triton.nn
+#import triton.ops
+#import triton.nn
 
 
 # clean-up libtriton resources
diff --git a/python/triton/frameworks.py b/python/triton/frameworks.py
deleted file mode 100644
index 9385bc212..000000000
--- a/python/triton/frameworks.py
+++ /dev/null
@@ -1,28 +0,0 @@
-import sys
-import os
-import triton._C.libtriton as libtriton
-
-torch = None
-tensorflow = None
-
-def _import_torch():
-  global torch
-  if torch is None:
-    import torch
-
-def _import_tensorflow():
-  global tensorflow
-  if tensorflow is None:
-    import tensorflow
-
-def has_tensorflow():
-  result = 'tensorflow' in sys.modules
-  if result:
-    _import_tensorflow()
-  return result
-
-def has_torch():
-  result = 'torch' in sys.modules
-  if result:
-    _import_torch()
-  return result
\ No newline at end of file
diff --git a/python/triton/kernel.py b/python/triton/kernel.py
index 019819b7e..51cf08499 100644
--- a/python/triton/kernel.py
+++ b/python/triton/kernel.py
@@ -1,181 +1,71 @@
-# import for cache
-import os
-import tempfile
-import shutil
-import hashlib
-import sysconfig
-import sys
-import weakref
-import contextlib
-import io
-import torch.utils.cpp_extension
-# import for just-in-time compilation
-import distutils
-import setuptools.command.build_ext
-import setuptools
-# triton
-import triton.frameworks as fw
-import triton.utils
 import triton._C.libtriton as libtriton
 import os
 import time
-import platform
+from struct import pack
+import torch
 
-@contextlib.contextmanager
-def quiet():
-    old_stdout, old_stderr = sys.stdout, sys.stderr
-    sys.stdout, sys.stderr = io.StringIO(), io.StringIO()
-    try:
-        yield
-    finally:
-        sys.stdout, sys.stderr = old_stdout, old_stderr
+codes = {
+  libtriton.arg_type.int1:   'B',
+  libtriton.arg_type.int8:   'B',
+  libtriton.arg_type.int32:  'I',
+  libtriton.arg_type.int64:  'Q',
+  libtriton.arg_type.half:   'H',
+  libtriton.arg_type.float:  'f',
+  libtriton.arg_type.double: 'd',
+  libtriton.arg_type.buffer: 'P'
+}
 
-def _build(src, path, name):
-  ccdir = os.path.join(libtriton.__file__, os.path.pardir)
-  ccdir = os.path.realpath(ccdir)
-  # include / libraries
-  include_dirs = [os.path.join(ccdir, 'include')]
-  library_dirs = [ccdir]
-  libraries = ['triton']
-  # create extension module
-  abi = fw.torch._C._GLIBCXX_USE_CXX11_ABI
-  extra_compile_args = ['-fPIC', '-Wno-deprecated-declarations', f'-D_GLIBCXX_USE_CXX11_ABI={str(int(abi))}']
-  extra_compile_args += ['-DTORCH_EXTENSION_NAME={}'.format(name)]
-  extra_compile_args += ['-DTORCH_API_INCLUDE_EXTENSION_H']
-
-  ext = torch.utils.cpp_extension.CUDAExtension(
-      name = name,
-      language = 'c++',
-      sources = [src],
-      include_dirs = include_dirs,
-      library_dirs = library_dirs,
-      libraries = libraries,
-      extra_compile_args = extra_compile_args,
-      depends = [os.path.realpath(libtriton.__file__)]
-  )
-  # build extension module
-  args = ['build_ext']
-  tmp = tempfile.mkdtemp()
-  args.append('--build-temp=' + tmp)
-  args.append('--build-lib=' + path)
-  args.append('-q')
-  args = dict(
-      name = name,
-      ext_modules = [ext],
-      script_args = args,
-  ) 
-  with quiet():
-    setuptools.setup(**args)
-  shutil.rmtree(tmp)
-
-def _cvt_to_def_str(obj):
-  # bool
-  if isinstance(obj, bool):
-    return str(int(obj))
-  # torch type
-  if fw.has_torch():
-    if isinstance(obj, fw.torch.dtype):
-      return {fw.torch.int8: 'char',
-              fw.torch.int16: 'short',
-              fw.torch.int32: 'int',
-              fw.torch.int64: 'long',
-              fw.torch.float16: 'half',
-              fw.torch.float32: 'float',
-              fw.torch.float64: 'double'}[obj]
-  else:
-    assert False
-  # default
-  return str(obj)
+sizes = {
+  libtriton.arg_type.int1:   1,
+  libtriton.arg_type.int8:   1,
+  libtriton.arg_type.int32:  4,
+  libtriton.arg_type.int64:  8,
+  libtriton.arg_type.half:   2,
+  libtriton.arg_type.float:  4,
+  libtriton.arg_type.double: 8,
+  libtriton.arg_type.buffer: 8
+}
 
 
-def _encode(arg_types):
-  codes = {
-    libtriton.arg_type.int1:   'i1',
-    libtriton.arg_type.int8:   'i8',
-    libtriton.arg_type.int32:  'i32',
-    libtriton.arg_type.int64:  'i64',
-    libtriton.arg_type.half:   'f16',
-    libtriton.arg_type.float:  'f32',
-    libtriton.arg_type.double: 'f64',
-    libtriton.arg_type.buffer: 'buf'
+def th_to_triton(obj):
+  tys = {
+    torch.int8: 'char',
+    torch.int16: 'short',
+    torch.int32: 'int',
+    torch.int64: 'long',
+    torch.float16: 'half',
+    torch.float32: 'float',
+    torch.float64: 'double'
   }
-  ret = '_'.join(map(codes.get, arg_types))
-  return ret
+  if isinstance(obj, torch.dtype):
+    return [tys[obj]]
+  if isinstance(obj, list):
+    return [th_to_triton(x)[0] for x in obj]
+  return [str(obj)]
 
-def _make_framework_op(arg_types):
-  name = _encode(arg_types)
-  # path of .cpp and .so file
-  home = os.path.expanduser('~')
-  root = os.path.join(home, '.triton', 'torch', name)
-  try:
-    os.makedirs(root)
-  except FileExistsError:
-    pass
-  suffix = sysconfig.get_config_var('EXT_SUFFIX')
-  so = os.path.join(root, f'op{suffix}')
-  cpp = os.path.join(root, f'op.cpp')
-  # handle cached .so file
-  if os.path.exists(so) and os.stat(so).st_size > 0:
-    tt_mtime = os.stat(os.path.realpath(libtriton.__file__)).st_mtime
-    so_mtime = os.stat(so).st_mtime
-    # can use cached if libtriton is older than the .so
-    if tt_mtime < so_mtime:
-      fw.torch.ops.load_library(so)
-      return getattr(fw.torch.ops.triton, name)
-  # create torch source code
-  print('[TRITON] Compiling op...')
-  baton = torch.utils.file_baton.FileBaton(os.path.join(root, 'lock'))
-  if baton.try_acquire():
-    try:
-      src, _ = libtriton.make_torch_src(name, arg_types)
-      with open(cpp, 'w+') as handle:
-        handle.writelines(src)
-      ccdir = os.path.join(libtriton.__file__, os.path.pardir)
-      ccdir = os.path.realpath(ccdir)
-      _build(cpp, root, 'op')
-    finally:
-      baton.release()
-  else:
-    baton.wait()
-  print('[TRITON] Done compiling...')
-  fw.torch.ops.load_library(so)
-  return getattr(fw.torch.ops.triton, name)
-
-  
-  
 
+def cdiv(a, b):
+    return (a + b - 1) // b
 
 class kernel:
 
   def __init__(self, src, defines = dict(), num_warps = [2, 4, 8]):
     self.src = src
-    # create constants
-    self.cst = dict()
-    # create triton op
-    macros = []
-    for k, v in defines.items():
-      cvt = lambda x: _cvt_to_def_str(x)
-      if(isinstance(v, list)):
-        values = list(map(cvt, v))
-      else:
-        values = [cvt(v)]
-      macros.append((k, values))
-    opt = libtriton.options_space()
-    opt.defines = macros
-    opt.num_warps = num_warps
+    self.opt = libtriton.options_space()
+    self.opt.defines = [(k, th_to_triton(v)) for k, v in defines.items()]
+    self.opt.num_warps = num_warps
     self.op_id = libtriton.make_op_id()
-    self.opt = opt
     self.registered = set()
-    # create pytorch hook
-    arg_types = libtriton.get_fn_signature(self.src, opt)
-    self.fw_op = _make_framework_op(arg_types)
+    arg_types = libtriton.get_fn_signature(self.src, self.opt)
+    size = sum([sizes[x] for x in arg_types])
+    self.tys = ''.join([codes[x] for x in arg_types])
 
   def set_constant(self, device, name, value):
     libtriton.register_cst((self.op_id, device), name, value)
 
   def __call__(self, *args, **kwargs):
     for x in args:
-      if isinstance(x, fw.torch.Tensor):
+      if isinstance(x, torch.Tensor):
         device = x.device.index
         break
     # lazily register function for device
@@ -191,6 +81,6 @@ class kernel:
     grid = kwargs['grid']
     libtriton.register_grid((self.op_id, device), grid)
     # launch
-    self.fw_op(self.op_id, device, bench, bench_id, *args)
-    if bench > 0:
-      return libtriton.retrieve_scalar(bench_id)
\ No newline at end of file
+    params = pack(self.tys, *[x.data_ptr() if isinstance(x, torch.Tensor) else x for x in args])
+    torch.cuda.synchronize()
+    torch.ops.triton.launch_kernel(self.op_id, device, params)
\ No newline at end of file
diff --git a/python/triton/utils.py b/python/triton/utils.py
deleted file mode 100644
index 7112870d2..000000000
--- a/python/triton/utils.py
+++ /dev/null
@@ -1,75 +0,0 @@
-import triton.frameworks as fw
-import triton._C.libtriton as libtriton
-import numpy as np
-import weakref
-
-def cdiv(a, b):
-    return (a + b - 1) // b
-
-class tf_empty_proxy:
-
-  def __init__(self, shape, dtype):
-    self.shape = shape
-    self.dtype = dtype
-    self.tensor = None
-  
-  def to_tensor(self):
-    assert self.tensor is not None
-    return self.tensor
-
-def empty(shape, dtype):
-  if fw.has_tensorflow():
-    shape = [fw.tensorflow.constant(x) for x in shape]
-    shape = fw.tensorflow.stack(shape)
-    return tf_empty_proxy(shape, dtype)
-    #return fw.tf_extra_ops.alloc_empty(args, T = dtype)
-  elif fw.has_torch():
-    return fw.torch.empty(shape, dtype=dtype, device='cuda:0')
-
-def shape(A) :
-  if fw.has_tensorflow():
-    return A.shape.as_list()
-  elif fw.has_torch():
-    return A.shape
-  else:
-    assert False
-
-
-class id_dict:
-
-  # Lazy entry for e.g., tensorflow, when value of benchmark is
-  # not known at graph compile time
-  class lazy_entry:
-    def __init__(self, id):
-      self.id = id
-
-    def get(self):
-      return libtriton.retrieve_scalar(self.id)
-
-  def __init__(self):
-    self.data = dict()
-
-  def __delitem__(self, key):
-    del self.data[key]
-
-  @staticmethod
-  def _get_key(key):
-    if fw.has_tensorflow():
-      if isinstance(key, fw.tensorflow.Tensor):
-        key = id(key.op)
-    if fw.has_torch():
-      if isinstance(key, fw.torch.Tensor):
-        key = id(key)
-    return key
-
-  def __getitem__(self, key):
-    ret = self.data[id_dict._get_key(key)]
-    if isinstance(ret, id_dict.lazy_entry):
-      return ret.get()
-    return ret
-
-  def __len__(self):
-    return len(self.data)
-
-  def __setitem__(self, key, value):
-    self.data[id_dict._get_key(key)] = value
\ No newline at end of file
diff --git a/tests/bench/dot.cc b/tests/bench/dot.cc
index 9f1260469..9f5a01d9c 100644
--- a/tests/bench/dot.cc
+++ b/tests/bench/dot.cc
@@ -17,11 +17,11 @@ int main() {
 //      config_t{ord, x[0], x[1], 384, 384, 384},
 //      config_t{ord, x[0], x[1], 512, 512, 512},
 //      config_t{ord, x[0], x[1], 768, 768, 768},
-//      config_t{ord, x[0], x[1], 1024, 1024, 1024},
+      config_t{ord, x[0], x[1], 1024, 1024, 1024},
 //      config_t{ord, x[0], x[1], 1280, 1280, 1280},
 //      config_t{ord, x[0], x[1], 1536, 1536, 1536},
 //      config_t{ord, x[0], x[1], 2048, 2048, 2048},
-      config_t{ord, x[0], x[1], 8192, 8192, 8192},
+//      config_t{ord, x[0], x[1], 8192, 8192, 8192},
 
 //      config_t{ord, x[0], x[1], 256, 16, 256},
 //      config_t{ord, x[0], x[1], 512, 16, 512},
@@ -65,7 +65,7 @@ int main() {
   for(const auto& c: configs){
     std::tie(ord, AT, BT, M, N, K) = c;
     std::cout << "// " << c ;
-    for(auto perf: bench_dot(stream, HALF, AT, BT, M, N, K, ord, ord))
+    for(auto perf: bench_dot(stream, FLOAT, AT, BT, M, N, K, ord, ord))
       std::cout << ", " << perf << std::flush;
     std::cout << std::endl;
   }
diff --git a/tests/common/dot.h b/tests/common/dot.h
index 6433ec562..74c7d78ee 100644
--- a/tests/common/dot.h
+++ b/tests/common/dot.h
@@ -2,6 +2,7 @@
 #include <cstring>
 #include <sstream>
 #include <cstdio>
+#include <tuple>
 #include "triton/driver/backend.h"
 #include "triton/driver/stream.h"
 #include "triton/tools/bench.hpp"
@@ -12,6 +13,24 @@
 #include "util.h"
 
 
+//struct dot_arg_t{
+//  CUdeviceptr a;
+//  CUdeviceptr b;
+//  CUdeviceptr c;
+//  float alpha;
+//  int M;
+//  int N;
+//  int K;
+//  int lda;
+//  int ldb;
+//  int ldc;
+//  CUdeviceptr locks;
+//};
+
+//typedef std::tuple<CUdeviceptr, CUdeviceptr, CUdeviceptr,
+//                   float, int, int, int, int, int, int,
+//                   CUdeviceptr> dot_arg_t;
+
 template<class T, bool AT, bool BT>
 static void cc_dot(std::vector<T> &c, const std::vector<T> &a, const std::vector<T> &b,
                     size_t M, size_t N, size_t K){
@@ -108,6 +127,7 @@ void triton_dot(drv::stream* stream, bool AT, bool BT,
     opt.defines.push_back({"TM", {std::to_string(TM)}});
     opt.defines.push_back({"TN", {std::to_string(TN)}});
     opt.defines.push_back({"TK", {std::to_string(TK)}});
+    opt.defines.push_back({"TZ", {"1"}});
     opt.num_warps = {nwarp};
   }
   if(mode == BENCH) {
@@ -119,9 +139,25 @@ void triton_dot(drv::stream* stream, bool AT, bool BT,
   }
 
   // kernels
-
   rt::function function(src::dot, opt);
-  std::vector<rt::arg> args = {&*da, &*db, &*dc, (float)1, M, N, K, lda, ldb, ldc, &*dlocks};
+  float alpha = 1;
+  char args[60];
+  memcpy(args + 0, &*da->cu(), 8);
+  memcpy(args + 8, &*db->cu(), 8);
+  memcpy(args + 16, &*dc->cu(), 8);
+  memcpy(args + 24, &alpha, 4);
+  memcpy(args + 28, &M, 4);
+  memcpy(args + 32, &N, 4);
+  memcpy(args + 36, &K, 4);
+  memcpy(args + 40, &lda, 4);
+  memcpy(args + 44, &ldb, 4);
+  memcpy(args + 48, &ldc, 4);
+  memcpy(args + 52, &*dlocks->cu(), 8);
+
+
+//  dot_arg_t args = {*da->cu(), *db->cu(), *dc->cu(),
+//                    1, M, N, K, lda, ldb, ldc, *dlocks->cu()};
+//  std::cout << sizeof(dot_arg_t) << std::endl;
   auto grid = [M, N](const rt::function::options_t& x) {
     return rt::grid_t{ceil(M, x.D<int>("TM")),
                       ceil(N, x.D<int>("TN")),
@@ -131,7 +167,7 @@ void triton_dot(drv::stream* stream, bool AT, bool BT,
   // metrics
   if(mode == BENCH){
     auto tflops = [&](double nanosec) { return 2.*M*N*K / nanosec * 1e-3; };
-    double triton_ns = triton::tools::bench([&]() { function(args, grid, stream);}, stream);
+    double triton_ns = triton::tools::bench([&]() { function((void**)&args, grid, stream);}, stream);
     bench.push_back(tflops(triton_ns));
 
     // cublas
@@ -162,7 +198,7 @@ void triton_dot(drv::stream* stream, bool AT, bool BT,
     stream->write(&*da, true, 0, ha);
     stream->write(&*db, true, 0, hb);
     // run kernel
-    function(args, grid, stream);
+    function((void**)&args, grid, stream);
     // write back
     stream->synchronize();
     // compare with CPU
diff --git a/tests/common/src/dot.h b/tests/common/src/dot.h
index e94e03b5c..54e58e13e 100644
--- a/tests/common/src/dot.h
+++ b/tests/common/src/dot.h
@@ -6,7 +6,9 @@ __global__ void dot(TYPE * A __noalias __readonly __aligned(16),
                     TYPE * B __noalias __readonly __aligned(16),
                     TYPE * C __noalias __aligned(16),
                     float alpha,
-                    int M, int N, int K __multipleof(16),
+                    int M __retune,
+                    int N __retune,
+                    int K __retune __multipleof(16),
                     int lda __multipleof(8),
                     int ldb __multipleof(8),
                     int ldc __multipleof(8),
diff --git a/tests/unit/dot.cc b/tests/unit/dot.cc
index 6c24386ea..300ca9427 100644
--- a/tests/unit/dot.cc
+++ b/tests/unit/dot.cc
@@ -16,7 +16,7 @@ int main() {
   for(int nwarps: std::vector<int>{4})
   for(bool AT: std::array<bool, 2>{false, true})
   for(bool BT: std::array<bool, 2>{false, true}){
-    configs.push_back(config_t{HALF, AT, BT, TM, TN, TK, TM, TN, TK, nwarps});
+    configs.push_back(config_t{FLOAT, AT, BT, TM, TN, TK, TM, TN, TK, nwarps});
   }
   // test
   dtype_t dtype;