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Increase the robustness of 3d scheduling when X dim is very small.

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This commit is contained in:
Robert Maynard 2015-07-20 13:27:58 -04:00
parent 7a21a08c46
commit 9f16669e3c
1 changed files with 5 additions and 2 deletions
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7
vtkm/cont/cuda/internal/DeviceAdapterAlgorithmThrust.h
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@ -895,21 +895,24 @@ public:
static_cast<vtkm::UInt32>(rangeMax[1]),
static_cast<vtkm::UInt32>(rangeMax[2]) );
//currently we presume that 3d scheduling access patterns prefer accessing
//memory in the X direction. Also should be good for thin in the Z axis
//algorithms
//algorithms.
dim3 blockSize3d(64,2,1);
//handle the simple use case of 'bad' datasets which are thin in X
//but larger in the other directions, allowing us decent performance with
//that use case.
if(rangeMax[0] <= 64 && rangeMax[1] >= 64 && rangeMax[2] >= 64)
if(rangeMax[0] <= 128 &&
(rangeMax[0] < rangeMax[1] || rangeMax[0] < rangeMax[2]) )
{
blockSize3d = dim3(16,4,4);
}
dim3 gridSize3d;
compute_block_size(ranges, blockSize3d, gridSize3d);
Schedule3DIndexKernel<Functor> <<<gridSize3d, blockSize3d>>> (functor, ranges);
//sync so that we can check the results of the call.