kk
Freddie Witherden <fred...@witherden.org> writes: > Thank you for this. However, toying around with the following example: > > [snip] > > with OpenMPI 1.7.3 (running as mpirun -n 2 python file.py) I find that > the version using cubuf.as_buffer fails with a segmentation fault due to > invalid permissions whereas the variant using my make_buf hack works as > expected. > > I believe the problem is on L1450 of cuda.hpp where: > > PyBuffer_FromMemory((void *) (get_pointer() + size), size))); > > which should be: > > PyBuffer_FromMemory((void *) get_pointer(), size))); > > (and analogously on L1498 -- which fixes the above issue) also it may be > better to use PyBuffer_FromReadWriteMemory as this will permit CUDA > allocations to be on the receiving end of MPI communications.
Both done. Py3 compatbility also restored. Thanks for mopping up after me here--I coded this up in a boring committee meeting... :/ Andreas
pgpR1GFJR2eTd.pgp
Description: PGP signature
_______________________________________________ PyCUDA mailing list PyCUDA@tiker.net http://lists.tiker.net/listinfo/pycuda
