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[SYCL][L0] Fix timestamp calculation (in ns) #5555

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Merged
merged 1 commit into from
Feb 15, 2022
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[SYCL][L0] Fix timestamp calculation (in ns) #5555

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14 changes: 6 additions & 8 deletions sycl/plugins/level_zero/pi_level_zero.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -5105,6 +5105,8 @@ pi_result piEventGetProfilingInfo(pi_event Event, pi_profiling_info ParamName,
Event->Queue
? Event->Queue->Device->ZeDeviceProperties->timerResolution
: Event->Context->Devices[0]->ZeDeviceProperties->timerResolution;
// Get timestamp frequency
const double ZeTimerFreq = 1E09 / ZeTimerResolution;

ReturnHelper ReturnValue(ParamValueSize, ParamValue, ParamValueSizeRet);

Expand All @@ -5113,11 +5115,8 @@ pi_result piEventGetProfilingInfo(pi_event Event, pi_profiling_info ParamName,
switch (ParamName) {
case PI_PROFILING_INFO_COMMAND_START: {
ZE_CALL(zeEventQueryKernelTimestamp, (Event->ZeEvent, &tsResult));

uint64_t ContextStartTime = tsResult.context.kernelStart;
ContextStartTime *= ZeTimerResolution;

return ReturnValue(uint64_t{ContextStartTime});
uint64_t ContextStartTime = tsResult.context.kernelStart * ZeTimerFreq;
return ReturnValue(ContextStartTime);
}
case PI_PROFILING_INFO_COMMAND_END: {
ZE_CALL(zeEventQueryKernelTimestamp, (Event->ZeEvent, &tsResult));
Expand All @@ -5136,9 +5135,8 @@ pi_result piEventGetProfilingInfo(pi_event Event, pi_profiling_info ParamName,
(1LL << Device->ZeDeviceProperties->kernelTimestampValidBits) - 1;
ContextEndTime += TimestampMaxValue - ContextStartTime;
}
ContextEndTime *= ZeTimerResolution;

return ReturnValue(uint64_t{ContextEndTime});
ContextEndTime *= ZeTimerFreq;
return ReturnValue(ContextEndTime);
}
case PI_PROFILING_INFO_COMMAND_QUEUED:
case PI_PROFILING_INFO_COMMAND_SUBMIT:
Expand Down