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GPU Calc: reflect the true cost of InterpretTail more accurately.

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Change-Id: I7004150569e5329f19d2f08adbd70477bd6252ff
This commit is contained in:
Michael Meeks
2013-11-29 02:04:15 +00:00
parent 1d140dc9ea
commit 773527bad2
1 changed files with 8 additions and 0 deletions
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8
sc/source/core/opencl/opencl_device.cxx
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@@ -376,9 +376,17 @@ ds_status evaluateScoreForDevice(ds_device* device, void* evalData)
testData->output[j] = fAverage + (fMin * fSoP); testData->output[j] = fAverage + (fMin * fSoP);
} }
// InterpretTail - the S/W fallback is nothing like as efficient
// as any good openCL implementation: no SIMD, tons of branching
// in the inner loops etc. Generously characterise it as only 10x
// slower than the above.
float fInterpretTailFactor = 10.0;
device->score = (void*)new LibreOfficeDeviceScore; device->score = (void*)new LibreOfficeDeviceScore;
((LibreOfficeDeviceScore*)device->score)->fTime = timerCurrent(&kernelTime); ((LibreOfficeDeviceScore*)device->score)->fTime = timerCurrent(&kernelTime);
((LibreOfficeDeviceScore*)device->score)->bNoCLErrors = true; ((LibreOfficeDeviceScore*)device->score)->bNoCLErrors = true;
((LibreOfficeDeviceScore*)device->score)->fTime *= fInterpretTailFactor;
} }
return DS_SUCCESS; return DS_SUCCESS;
} }