Patrick Flick

Here is some compiled code that shows this: http://pastebin.com/JLtz0nnh The memdump in debug shows that the values are in video ram, but just not shown on the console.

TODO: - [ ] Properly define interfaces to send/recv, isend/irecv, async_send, async_recv, etc - [ ] add send/recv functions to test suite (see eg #14 )

See here: https://github.com/open-mpi/ompi/issues/1462 Two options really: 1. Use MPI_Pack/Unpack for MPI compliant copying of the in/inout buffers inside the custom reduction operation. 2. Or use MPI_Type_get_envelope and manually copy over...