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Revert "use EMA in place of Welford"

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This reverts commit 6587dbfa47.
This commit is contained in:
Carl Lin
2022-03-08 18:00:12 -05:00
committed by Michael Vines
parent c878c9e2cb
commit 9acbfa5eb1
3 changed files with 30 additions and 34 deletions
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9
core/src/cost_update_service.rs
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@ -270,8 +270,9 @@ mod tests {
let accumulated_us: u64 = 2000;
let accumulated_units: u64 = 200;
let count: u32 = 10;
// to expect new cost = (mean + 2 * std)
expected_cost = 24;
// to expect new cost = (mean + 2 * std) of [10, 20] = 25, where
// mean = (10+20)/2 = 15; std=5
expected_cost = 25;
execute_timings.details.per_program_timings.insert(
program_key_1,
@ -366,7 +367,7 @@ mod tests {
// 100, // original program_cost
// 1000, // cost_per_error
// ]
let expected_cost = 1342u64;
let expected_cost = 1450u64;
assert_eq!(1, updated_program_costs.len());
assert_eq!(
Some(&expected_cost),
@ -400,7 +401,7 @@ mod tests {
// 1000, // cost_per_error from above test
// 1450, // the smaller_cost_per_error will be coalesced to prev cost
// ]
let expected_cost = 1915u64;
let expected_cost = 1973u64;
assert_eq!(1, updated_program_costs.len());
assert_eq!(
Some(&expected_cost),