Workaround for bug on Lion that incorrectly reports the maximum workgroup size

8e3be827 · Peter Eastman · 9a1b72ff · 8e3be827
Commit 8e3be827 authored Nov 29, 2011 by Peter Eastman
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platforms/opencl/src/OpenCLSort.h platforms/opencl/src/OpenCLSort.h +1 -1

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--- a/platforms/opencl/src/OpenCLSort.h
+++ b/platforms/opencl/src/OpenCLSort.h
@@ -80,7 +80,7 @@ public:

        // Work out the work group sizes for various kernels.

-        int maxGroupSize = context.getDevice().getInfo<CL_DEVICE_MAX_WORK_GROUP_SIZE>();
+        int maxGroupSize = std::min(256, (int) context.getDevice().getInfo<CL_DEVICE_MAX_WORK_GROUP_SIZE>());
        for (rangeKernelSize = 1; rangeKernelSize*2 <= maxGroupSize; rangeKernelSize *= 2)
            ;
        positionsKernelSize = rangeKernelSize;