Hi Ricardo, On Tue, 28 Jun 2011 11:42:34 -0500, Ricardo Amézquita <[email protected]> wrote: > Thanks for your help. I was using pyopencl 0.92. Now I'm using the most > recent version pyopencl-2011.1.1 ( I also updated the ATI drivers, to the > latest ones) and the cache is working great. The re-runing time is > completely reduced. > > Now I'm seeing a different issue. When I run the program, I get this warning > > Warning:W000:Barrier caused limited groupsize > > This is shown when the GPU is computing, but not when the CPU is computing. > I was not seeing this before. I don't know if it is a pyopencl issue or a > driver issue. > > There is another issue, I'm trying to calculate using an ATI4870, but the > cl_array.sum is not working. It works on my CPU, but not on the GPU. The > error I get is: > ... > ... > ... > LogicError: clEnqueueNDRangeKernel failed: invalid work group size > > Is there a way to set the group size for pyfft and for pyopencl.array.sum???
What does the 4870 report for max_workgroup_size? Andreas
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