On Sonntag 08 März 2009, Ahmed Fasih wrote: > Hi, I'm having *no* trouble copying numpy matrices of type complex64 > to the GPU global memory and working on them as float2's, but when > attempting to use such numpy matrices to initialize *textures*, I seem > to be running into some problems.
I'd be happy to take a patch that lets matrix_to_array accept complex32 matrices and convert them to float2 textures. > I then attempted to recreate the functionality in > cuda.matrix_to_array() by building an ArrayDescriptor and using > Memcpy2D, but making use of the ArrayDescriptor.num_channels field, > which I believe allows the creation of float2's when its format is > FLOAT. Specifically, > <code> > h, w = row.shape > descr = cuda.ArrayDescriptor() > descr.w = w > descr.h =h > descr.format = cuda.array_format.FLOAT > descr.num_channels = 2 > descr.flags = 0 > ary = cuda.Array(descr) > </code> > and this last line gives me the cryptic error: > "pycuda._driver.LogicError: cuArrayCreate failed: invalid value." Can you post the values of w and h? Also, descr doesn't have a 'flags' attribute. Or, feel free to post a reduced test case--this should definitely work. Andreas
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