Sorry for the delay in replying.
If you have non-contiguous buffers, you might want to investigate using MPI
datatypes to describe the memory that you want to send/receive. Google around;
you'll find bunches of tutorials on these kinds of things.
However, be aware that for a large 2D array, th
Dear all,
I am new in OpenMPI and writing a parallel processing program using openmpi in
C++ language. I would like to use the function MPI_Allreduce() but my sendbuf
and recvbuf datatype are pointers/arrays (2D).
Is it possible to pass in and out the pointers/arrays using the MPI_Allreduce()
