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[SYCL] Apply Level Zero batching workaround more selectively #4304

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Merged
merged 1 commit into from
Aug 12, 2021
Merged

[SYCL] Apply Level Zero batching workaround more selectively #4304

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6 changes: 4 additions & 2 deletions sycl/source/detail/scheduler/commands.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1106,7 +1106,8 @@ bool UnMapMemObject::producesPiEvent() const {
// an event waitlist and Level Zero plugin attempts to batch these commands,
// so the execution of kernel B starts only on step 4. This workaround
// restores the old behavior in this case until this is resolved.
return MQueue->getPlugin().getBackend() != backend::level_zero;
return MQueue->getPlugin().getBackend() != backend::level_zero ||
MEvent->getHandleRef() != nullptr;
}

cl_int UnMapMemObject::enqueueImp() {
Expand Down Expand Up @@ -1202,7 +1203,8 @@ bool MemCpyCommand::producesPiEvent() const {
// so the execution of kernel B starts only on step 4. This workaround
// restores the old behavior in this case until this is resolved.
return MQueue->is_host() ||
MQueue->getPlugin().getBackend() != backend::level_zero;
MQueue->getPlugin().getBackend() != backend::level_zero ||
MEvent->getHandleRef() != nullptr;
}

cl_int MemCpyCommand::enqueueImp() {
Expand Down