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[Autoscheduler] Reduce task weight coercion overhead #8995
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LGTM.
cc @tqchen @junrushao1994
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LGTM. BTW this is interesting that we observe meaningful amount of time is used in error handling. Would you like to provide some details? Just curious 😄 Thanks a lot! |
@junrushao1994 the (hidden) place this ends up getting hit is this function: self.objective_func = lambda costs: sum(c * w for c, w in zip(costs, task_weights)) because
Note that either part of this change is sufficient to make the cost negligible. The open question is whether there may be other scenarios where the |
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Looks good. Thanks @petersalas!
Co-authored-by: Peter Salas <[email protected]>
Co-authored-by: Peter Salas <[email protected]>
In autoscheduler, a meaningful amount of time is spent collecting (discarded) backtraces in the
TaskScheduler
objective_func
due to failingReflectionVTable::GetAttr
calls during coercion.Modify
extract_tasks
to returnList[int]
instead ofList[IntImm]
to remove coercion altogether from theobjective_func
.