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Environment variable to override WGM value at run-time for experiments #1040

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Merged
AlexBrownAMD merged 1 commit into from
Sep 10, 2025
Merged

Environment variable to override WGM value at run-time for experiments #1040

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8 changes: 8 additions & 0 deletions projects/hipblaslt/tensilelite/include/Tensile/AMDGPU.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -228,6 +228,7 @@ namespace TensileLite
int computeUnitCount = 0;
int skDynamicGrid = 6;
int skDynamicWGM = 0;
int fixedWGM = std::numeric_limits<int>::max();
int skMaxCUs = 0;
int skGridMultiplier = 1;
int skFixedGrid = 0;
Expand Down Expand Up @@ -263,6 +264,13 @@ namespace TensileLite
return value;
}

const int getFixedWGM() const
{
static const char* envStr = std::getenv("TENSILE_FIXED_WGM");
static const int value = (envStr == NULL ? std::numeric_limits<int>::max() : std::atoi(envStr));
return value;
}

const int getSKMaxCUs() const
{
static const char* envStr = std::getenv("TENSILE_STREAMK_MAX_CUS");
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1 change: 1 addition & 0 deletions projects/hipblaslt/tensilelite/src/AMDGPU.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,7 @@ namespace TensileLite
, deviceName(name)
, skDynamicGrid(getSKDynamicGrid())
, skDynamicWGM(getSKDynamicWGM())
, fixedWGM(getFixedWGM())
, skMaxCUs(getSKMaxCUs())
, skGridMultiplier(getSKGridMultiplier())
, skFixedGrid(getSKFixedGrid())
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6 changes: 5 additions & 1 deletion projects/hipblaslt/tensilelite/src/ContractionSolution.cpp
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Expand Up @@ -1204,7 +1204,11 @@ namespace TensileLite
if(sizeMapping.streamK != 0)
{
AMDGPU const* pAMDGPU = dynamic_cast<AMDGPU const*>(&hardware);
if(pAMDGPU->skDynamicWGM == 1)
if(pAMDGPU->fixedWGM >= -1024 && pAMDGPU->fixedWGM <= 1024)
{
defaultWGM = pAMDGPU->fixedWGM;
}
else if(pAMDGPU->skDynamicWGM == 1)
{
hip::HipAMDGPU const* hipAMDGPU
= dynamic_cast<hip::HipAMDGPU const*>(&hardware);
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