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[src] Fix to cu-rand.cc RE large matrix sizes. #2249

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Merged
danpovey merged 1 commit into from
Mar 2, 2018
Merged

[src] Fix to cu-rand.cc RE large matrix sizes. #2249

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6 changes: 4 additions & 2 deletions src/cudamatrix/cu-rand.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,8 @@ void CuRand<Real>::RandUniform(CuMatrixBase<Real> *tgt) {
// may vary).
CuMatrix<Real> tmp(tgt->NumRows(), tgt->NumCols(), kUndefined,
kStrideEqualNumCols);
CURAND_SAFE_CALL(curandGenerateUniformWrap(gen_, tmp.Data(), tmp.NumRows() * tmp.Stride()));
size_t s = static_cast<size_t>(tmp.NumRows()) * static_cast<size_t>(tmp.Stride());
CURAND_SAFE_CALL(curandGenerateUniformWrap(gen_, tmp.Data(), s));
tgt->CopyFromMat(tmp);
CuDevice::Instantiate().AccuProfile(__func__, tim);
} else
Expand All @@ -84,7 +85,8 @@ void CuRand<Real>::RandUniform(CuMatrix<Real> *tgt) {
if (CuDevice::Instantiate().Enabled()) {
CuTimer tim;
// Here we don't need to use 'tmp' matrix,
CURAND_SAFE_CALL(curandGenerateUniformWrap(gen_, tgt->Data(), tgt->NumRows() * tgt->Stride()));
size_t s = static_cast<size_t>(tgt->NumRows()) * static_cast<size_t>(tgt->Stride());
CURAND_SAFE_CALL(curandGenerateUniformWrap(gen_, tgt->Data(), s));
CuDevice::Instantiate().AccuProfile(__func__, tim);
} else
#endif
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