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Crash when using vector pointers as kernel arguments

Question asked by psamathos on Jul 6, 2012
Latest reply on Jul 6, 2012 by binying



I have a kernel where I process blocks of 16 uchar/ushort and since OpenCL has a ushort16 type I thought it would be great to use those. However the kernel crashes, which I find odd since it works with Intel's OpenCL. It also works if I use vstore16/vload16, the memory is aligned on 4k-boundaries, it's only on the cpu. Using ushort8/uchar8 seems to work.


Have I misunderstood something or is this a bug?


Two simple kernels


kernel void thisOneCrashes(global const uchar16* data1, global ushort16* data2)


          data2[0] = (ushort16)(1);



kernel void thisOneDoesnt(global const uchar* data1, global ushort* data2)


          vstore16((ushort16)(1), 0, data2);




Magnus Sjöstrand