Fix crash with empty interaction groups

92d5b696 · peastman · 75f0401f · 92d5b696 · 92d5b696
Commit 92d5b696 authored Jul 30, 2014 by peastman
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platforms/cuda/src/CudaKernels.cpp platforms/cuda/src/CudaKernels.cpp +2 -0

platforms/opencl/src/OpenCLKernels.cpp platforms/opencl/src/OpenCLKernels.cpp +2 -0

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--- a/platforms/cuda/src/CudaKernels.cpp
+++ b/platforms/cuda/src/CudaKernels.cpp
@@ -2072,6 +2072,8 @@ void CudaCalcCustomNonbondedForceKernel::initInteractionGroups(const CustomNonbo
        // Find how many tiles we will create for this group.
        int tileWidth = min(min(32, (int) atoms1.size()), (int) atoms2.size());
+        if (tileWidth == 0)
+            continue;
        int numBlocks1 = (atoms1.size()+tileWidth-1)/tileWidth;
        int numBlocks2 = (atoms2.size()+tileWidth-1)/tileWidth;

--- a/platforms/opencl/src/OpenCLKernels.cpp
+++ b/platforms/opencl/src/OpenCLKernels.cpp
@@ -2082,6 +2082,8 @@ void OpenCLCalcCustomNonbondedForceKernel::initInteractionGroups(const CustomNon
        // Find how many tiles we will create for this group.
        int tileWidth = min(min(32, (int) atoms1.size()), (int) atoms2.size());
+        if (tileWidth == 0)
+            continue;
        int numBlocks1 = (atoms1.size()+tileWidth-1)/tileWidth;
        int numBlocks2 = (atoms2.size()+tileWidth-1)/tileWidth;