514 lines
15 KiB
Python
514 lines
15 KiB
Python
import torch
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import triton
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import triton.language as tl
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import copy
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import pytest
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import ast
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import itertools
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torch.manual_seed(0)
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# convert from string to torch.dtype
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# Necessary because doesn't print torch.dtype properly
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cvt = {
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'bool': torch.bool,
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'int8': torch.int8,
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'int16': torch.int16,
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'int32': torch.int32,
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'int64': torch.int64,
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'bfloat16': torch.bfloat16,
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'float16': torch.float16,
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'float32': torch.float32,
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'float64': torch.float64,
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}
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int_dtypes = ['int8', 'int16', 'int32', 'int64']
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float_dtypes = ['float16', 'float32', 'float64']
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dtypes = int_dtypes + float_dtypes
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def patch_kernel(template, to_replace):
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kernel = copy.deepcopy(template)
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for key, value in to_replace.items():
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kernel.src = kernel.src.replace(key, value)
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return kernel
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# generic test functions
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def _test_unary(dtype_x, expr, torch_expr=None, device='cuda'):
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SIZE = 128
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# define the kernel / launch-grid
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@triton.jit
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def kernel(Z, X, **meta):
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off = tl.arange(0, meta['SIZE'])
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x = tl.load(X + off)
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z = GENERATE_TEST_HERE
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tl.store(Z + off, z)
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kernel = patch_kernel(kernel, {'GENERATE_TEST_HERE': expr})
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# inputs
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x = triton.testing.random(SIZE, dtype=cvt[dtype_x], device=device)
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if 'log' in expr: x = torch.abs(x) + 0.01
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# reference result
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z_ref = eval(expr if torch_expr is None else torch_expr)
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# triton result
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z_tri = torch.empty_like(z_ref)
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kernel[(1, )](z_tri, x, SIZE=SIZE, num_warps=4)
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# compare
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triton.testing.assert_almost_equal(z_ref, z_tri)
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def _test_binary(dtype_x, dtype_y, expr, device='cuda'):
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SIZE = 128
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# define the kernel / launch-grid
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@triton.jit
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def kernel(Z, X, Y, **meta):
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off = tl.arange(0, meta['SIZE'])
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x = tl.load(X + off)
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y = tl.load(Y + off)
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z = GENERATE_TEST_HERE
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tl.store(Z + off, z)
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kernel = patch_kernel(kernel, {'GENERATE_TEST_HERE': expr})
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# inputs
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x = triton.testing.random(SIZE, dtype=cvt[dtype_x], device=device)
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y = triton.testing.random(SIZE, dtype=cvt[dtype_y], device=device)
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# reference result
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z_ref = eval(expr)
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# triton result
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z_tri = torch.empty(SIZE, dtype=z_ref.dtype, device=device)
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kernel[(1, )](z_tri, x, y, SIZE=SIZE, num_warps=4)
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# compare
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triton.testing.assert_almost_equal(z_ref, z_tri, err_msg=expr)
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# ---------------
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# test binary ops
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# ---------------
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@pytest.mark.parametrize("dtype_x, dtype_y, expr", [
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(dtype_x, dtype_y, f' x {op} y') \
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for op in ['+', '-', '*', '/', '%'] \
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for dtype_x in dtypes \
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for dtype_y in dtypes
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])
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def test_bin_op(dtype_x, dtype_y, expr, device='cuda'):
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_test_binary(dtype_x, dtype_y, expr, device=device)
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# ---------------
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# test bitwise ops
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# ---------------
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@pytest.mark.parametrize("dtype_x, dtype_y, expr", [
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(dtype_x, dtype_y, f' x {op} y') \
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for op in ['&', '|', '^'] \
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for dtype_x in dtypes \
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for dtype_y in dtypes
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])
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def test_bitwise_op(dtype_x, dtype_y, expr, device='cuda'):
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if 'float' in dtype_x + dtype_y:
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with pytest.raises(RuntimeError):
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_test_binary(dtype_x, dtype_y, expr, device=device)
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else:
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_test_binary(dtype_x, dtype_y, expr, device=device)
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# ---------------
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# test compare ops
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# ---------------
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@pytest.mark.parametrize("dtype_x, dtype_y, expr", [
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(dtype_x, dtype_y, f' x {op} y') \
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for op in ['==', '!=', '>', '<', '>=', '<='] \
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for dtype_x in dtypes \
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for dtype_y in dtypes
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])
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def test_compare_op(dtype_x, dtype_y, expr, device='cuda'):
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_test_binary(dtype_x, dtype_y, expr, device=device)
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# ---------------
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# test unary ops
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# ---------------
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@pytest.mark.parametrize("dtype_x, expr", [
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(dtype_x, f' -x') for dtype_x in float_dtypes
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] + [\
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(dtype_x, f' ~x') for dtype_x in int_dtypes
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])
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def test_unary_op(dtype_x, expr, device='cuda'):
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_test_unary(dtype_x, expr, device=device)
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# ----------------
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# test math ops
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# ----------------
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# @pytest.mark.paramterize("expr", [
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# 'exp', 'log', 'cos', 'sin'
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# ])
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@pytest.mark.parametrize("expr", [
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'exp', 'log', 'cos', 'sin'
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])
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def test_math_op(expr, device='cuda'):
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_test_unary('float32', f'tl.{expr}(x)', f'torch.{expr}(x) ', device=device)
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# ----------------
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# test indexing
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# ----------------
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def make_ptr_str(name, shape):
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rank = len(shape)
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offsets = []
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stride = 1
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for i in reversed(range(rank)):
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idx = ', '.join([':' if ii == i else 'None' for ii in range(rank)])
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offsets += [f'tl.arange(0, {shape[i]})[{idx}]*{stride}']
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stride *= shape[i]
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return f"{name} + {' + '.join(offsets)}"
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@pytest.mark.parametrize("expr", [f'x[{s}]' for s in
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['None, :', ':, None',\
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'None, :, :', ':, :, None']\
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])
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def test_index1d(expr, device='cuda'):
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dtype = torch.int32
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rank_x = expr.count(':')
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rank_y = expr.count(',') + 1
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shape_x = [32 for _ in range(rank_x)]
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shape_z = [32 for _ in range(rank_y)]
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# Triton kernel
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@triton.jit
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def kernel(Z, X, **meta):
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SIZE = meta['SIZE']
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m = tl.arange(0, SIZE)
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n = tl.arange(0, SIZE)
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x = tl.load(X_PTR_EXPR)
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z = GENERATE_TEST_HERE
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tl.store(Z_PTR_EXPR, z)
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to_replace = {
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'X_PTR_EXPR': make_ptr_str('X', shape_x),
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'Z_PTR_EXPR': make_ptr_str('Z', shape_z),
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'GENERATE_TEST_HERE': expr,
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}
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kernel = patch_kernel(kernel, to_replace)
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# torch result
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x = triton.testing.random(shape_x, dtype=dtype, device=device)
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y = torch.zeros(shape_z, dtype=dtype, device=device)
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z_ref = eval(expr) + y
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# triton result
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z_tri = torch.empty_like(z_ref)
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kernel[(1, )](z_tri, x, num_warps=1, SIZE=shape_x[0])
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# compare
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triton.testing.assert_almost_equal(z_ref, z_tri)
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# ---------------
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# test tuples
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# ---------------
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@triton.jit
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def fn(a, b):
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return a + b, \
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a - b, \
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a * b
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def test_tuples():
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device = 'cuda'
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@triton.jit
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def with_fn(X, Y, A, B, C):
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x = tl.load(X)
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y = tl.load(Y)
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a, b, c = fn(x, y)
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tl.store(A, a)
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tl.store(B, b)
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tl.store(C, c)
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@triton.jit
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def without_fn(X, Y, A, B, C):
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x = tl.load(X)
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y = tl.load(Y)
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a, b, c = x + y, x - y, x * y
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tl.store(A, a)
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tl.store(B, b)
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tl.store(C, c)
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x = torch.tensor([1.3], device=device, dtype=torch.float32)
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y = torch.tensor([1.9], device=device, dtype=torch.float32)
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a_tri = torch.tensor([0], device=device, dtype=torch.float32)
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b_tri = torch.tensor([0], device=device, dtype=torch.float32)
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c_tri = torch.tensor([0], device=device, dtype=torch.float32)
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for kernel in [with_fn, without_fn]:
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kernel[(1, )](x, y, a_tri, b_tri, c_tri, num_warps=1)
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a_ref, b_ref, c_ref = x + y, x - y, x * y
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assert a_tri == a_ref
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assert b_tri == b_ref
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assert c_tri == c_ref
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# ---------------
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# test atomics
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# ---------------
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@pytest.mark.parametrize("op, dtype_x, mode", itertools.chain.from_iterable([
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[('add', 'int32', mode), ('add', 'float16', mode), ('add', 'float32', mode), \
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('max', 'int32', mode), ('max', 'float32', mode),\
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('min', 'int32', mode), ('min', 'float32', mode),\
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]
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for mode in ['all_neg', 'all_pos', 'min_neg', 'max_pos']]))
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def test_atomic_rmw(op, dtype_x, mode, device='cuda'):
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dtype_x = cvt[dtype_x]
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n_programs = 5
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# triton kernel
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@triton.jit
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def kernel(X, Z, **meta):
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pid = tl.program_id(0)
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x = tl.load(X + pid)
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old = GENERATE_TEST_HERE
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kernel = patch_kernel(kernel, {'GENERATE_TEST_HERE': f'tl.atomic_{op}(Z, x)'})
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torch_op = {'add': torch.sum, 'max': torch.max, 'min': torch.min}[op]
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max_neutral = float('-inf') if dtype_x.is_floating_point else torch.iinfo(dtype_x).min
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min_neutral = float('inf') if dtype_x.is_floating_point else torch.iinfo(dtype_x).max
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neutral = {'add': 0, 'max': max_neutral, 'min': min_neutral}[op]
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# triton result
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x_tri = triton.testing.random((n_programs, ), dtype=dtype_x, device=device)
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if mode == 'all_neg':
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x_tri = -torch.abs(x_tri)
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if mode == 'all_pos':
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x_tri = torch.abs(x_tri)
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if mode == 'min_neg':
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idx = torch.randint(n_programs, size=(1, )).item()
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x_tri[idx] = -torch.max(torch.abs(x_tri)) - 1
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if mode == 'max_pos':
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idx = torch.randint(n_programs, size=(1, )).item()
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x_tri[idx] = torch.max(torch.abs(x_tri)) + 1
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z_tri = torch.empty([], dtype=dtype_x, device=device)
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z_tri.fill_(neutral)
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kernel[(n_programs, )](x_tri, z_tri)
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# torch result
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z_ref = torch_op(x_tri).to(dtype_x)
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# compare
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exact = op not in ['add']
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if exact:
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assert z_ref.item() == z_tri.item()
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else:
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triton.testing.assert_almost_equal(z_ref, z_tri)
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# ---------------
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# test cast
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# ---------------
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@pytest.mark.parametrize("dtype_x, dtype_z, bitcast", [
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(dtype_x, dtype_z, False) \
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for dtype_x in dtypes\
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for dtype_z in dtypes
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] + [
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('float32', 'bfloat16', False),
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('bfloat16', 'float32', False),
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('float32', 'int32', True)
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])
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def test_cast(dtype_x, dtype_z, bitcast, device='cuda'):
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x = torch.tensor([43.5], dtype=cvt[dtype_x], device=device)
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# triton kernel
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@triton.jit
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def kernel(X, Z, **meta):
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x = tl.load(X)
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z = x.to(Z.dtype.element_ty, bitcast=meta['BITCAST'])
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tl.store(Z, z)
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# triton result
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z_tri = torch.empty((1, ), dtype=cvt[dtype_z], device=device)
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kernel[(1, )](x, z_tri, BITCAST=bitcast)
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# torch result
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if bitcast:
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import numpy as np
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z_ref = x.detach().cpu().numpy().view(getattr(np, dtype_z))
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z_ref = torch.from_numpy(z_ref).to(device)
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else:
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z_ref = x.to(z_tri.dtype)
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assert z_tri == z_ref
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# ---------------
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# test reduce
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# ---------------
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@pytest.mark.parametrize("dtype, shape",
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[(dtype, shape) \
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for dtype in dtypes\
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for shape in [128, 512]])
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def test_reduce1d(dtype, shape, device='cuda'):
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dtype = cvt[dtype]
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# triton kernel
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@triton.jit
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def kernel(X, Z, **meta):
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x = tl.load(X + tl.arange(0, meta['BLOCK']))
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tl.store(Z, tl.sum(x, axis=0))
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x = triton.testing.random((shape,), dtype=dtype, device=device)
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# triton result
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z_tri = triton.testing.random((1,), dtype=dtype, device=device)
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kernel[(1,)](x, z_tri, BLOCK=shape)
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# torch result
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z_ref = torch.sum(x).to(dtype)
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# compare
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triton.testing.assert_almost_equal(z_tri, z_ref)
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@pytest.mark.parametrize("dtype, shape, axis",
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[(dtype, shape, 1) \
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for dtype in ['float32']\
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for shape in [(1, 1024)]])
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def test_reduce2d(dtype, shape, axis, device='cuda'):
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dtype = cvt[dtype]
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# triton kernel
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@triton.jit
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def kernel(X, Z, **meta):
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range_m = tl.arange(0, meta['BLOCK_M'])
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range_n = tl.arange(0, meta['BLOCK_N'])
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x = tl.load(X + range_m[:, None]*meta['BLOCK_N'] + range_n[None, :])
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z = tl.sum(x, axis=meta['AXIS'])
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tl.store(Z + range_m, z)
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# input
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x = triton.testing.random(shape, dtype=dtype, device=device)
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# triton result
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z_tri = torch.empty((shape[0],), dtype=dtype, device=device)
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kernel[(1,)](x, z_tri, BLOCK_M=shape[0], BLOCK_N=shape[1], AXIS=axis)
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# torch result
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z_ref = torch.sum(x, axis=axis).to(dtype)
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# compare
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triton.testing.assert_almost_equal(z_tri, z_ref)
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# ---------------
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# test permute
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# ---------------
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# ---------------
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# test permute
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# ---------------
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@pytest.mark.parametrize("dtype, shape, perm",
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[(dtype, shape, perm) \
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for dtype in ['float32']\
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for shape in [(128, 128)]\
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for perm in [(1, 0)]])
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def test_permute(dtype, shape, perm, device='cuda'):
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dtype = cvt[dtype]
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# triton kernel
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@triton.jit
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def kernel(X, stride_xm, stride_xn,
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Z, stride_zm, stride_zn, **meta):
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BLOCK_M = meta['BLOCK_M']
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BLOCK_N = meta['BLOCK_N']
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off_m = tl.arange(0, BLOCK_M)
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off_n = tl.arange(0, BLOCK_N)
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Xs = X + off_m[:, None] * stride_xm + off_n[None, :] * stride_xn
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Zs = Z + off_m[:, None] * stride_zm + off_n[None, :] * stride_zn
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tl.store(Zs, tl.load(Xs))
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# input
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x = triton.testing.random(shape, dtype=dtype, device=device)
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# triton result
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z_tri = torch.empty_like(x)
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pgm = kernel[(1, 1)](x, x.stride(0), x.stride(1),
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z_tri, z_tri.stride(1), z_tri.stride(0),
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BLOCK_M=shape[0], BLOCK_N=shape[1])
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# torch result
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z_ref = x.permute(*perm).contiguous()
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# compare
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triton.testing.assert_almost_equal(z_tri, z_ref)
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# parse ptx to make sure ld/st are vectorized
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ptx = pgm.asm('ptx')
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assert 'ld.global.v4' in ptx
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assert 'st.global.v4' in ptx
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# ---------------
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# test dot
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# ---------------
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@pytest.mark.parametrize("epilogue", ['none', 'add-matrix', 'add-rows', 'add-cols'])
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def test_dot(epilogue, device='cuda'):
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torch.manual_seed(0)
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# triton kernel
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@triton.jit
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def kernel(X, stride_xm, stride_xk,
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Y, stride_yk, stride_yn,
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Z, stride_zm, stride_zn, **meta):
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BLOCK_M = meta['BLOCK_M']
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BLOCK_K = meta['BLOCK_K']
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BLOCK_N = meta['BLOCK_N']
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off_m = tl.arange(0, BLOCK_M)
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off_n = tl.arange(0, BLOCK_N)
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off_k = tl.arange(0, BLOCK_K)
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Xs = X + off_m[:, None] * stride_xm + off_k[None, :] * stride_xk
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Ys = Y + off_k[:, None] * stride_yk + off_n[None, :] * stride_yn
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Zs = Z + off_m[:, None] * stride_zm + off_n[None, :] * stride_zn
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z = tl.dot(tl.load(Xs), tl.load(Ys))
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if meta['ADD_MATRIX']:
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z += tl.load(Zs)
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if meta['ADD_ROWS']:
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ZRs = Z + off_m * stride_zm
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z += tl.load(ZRs)[:, None]
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if meta['ADD_COLS']:
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ZCs = Z + off_n * stride_zn
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z += tl.load(ZCs)[None, :]
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|
tl.store(Zs, z)
|
|
# input
|
|
M, N, K = 64, 64, 32
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x = triton.testing.random((M, K), dtype=torch.float16, device=device)
|
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y = triton.testing.random((K, N), dtype=torch.float16, device=device)
|
|
# triton result
|
|
z = triton.testing.random((M, N), dtype=torch.float16, device=device)
|
|
z_tri = z.clone()
|
|
pgm = kernel[(1, 1)](x, x.stride(0), x.stride(1),
|
|
y, y.stride(0), y.stride(1),
|
|
z_tri, z_tri.stride(0), z_tri.stride(1),
|
|
BLOCK_M=M, BLOCK_K=K, BLOCK_N=N,
|
|
ADD_MATRIX = epilogue=='add-matrix',
|
|
ADD_ROWS = epilogue=='add-rows',
|
|
ADD_COLS = epilogue=='add-cols')
|
|
# torch result
|
|
z_ref = torch.matmul(x.float(), y.float())
|
|
if epilogue == 'add-matrix':
|
|
z_ref += z
|
|
if epilogue == 'add-rows':
|
|
z_ref += z[:,0][:, None]
|
|
if epilogue == 'add-cols':
|
|
z_ref += z[0,:][None, :]
|
|
z_ref = z_ref.to(torch.float16)
|
|
# compare
|
|
ptx = pgm.asm('ptx')
|
|
# print(ptx)
|
|
triton.testing.assert_almost_equal(z_tri, z_ref)
|
|
# make sure ld/st are vectorized
|
|
assert 'ld.global.v4' in ptx
|
|
assert 'st.global.v4' in ptx
|
|
|
|
|
|
# ---------------
|
|
# test load
|
|
# ---------------
|
|
|
|
# ---------------
|
|
# test store
|
|
# ---------------
|
|
|
|
# ---------------
|
|
# test if
|
|
# ---------------
|
|
|
|
# ---------------
|
|
# test for
|
|
# ---------------
|
|
|
|
# ---------------
|
|
# test while
|
|
# ---------------
|