MPI one sided communication with malloc vs MPI_Alloc_mem
Hello, Does Intel MPI provide support for one sided communication (MPI_Win_lock, MPI_Put, MPI_Win_unlock) with malloc or should the allc be done with MPI_Alloc_Mem? The standard is very implementor biased and I couldn't find any help through the forums or documentation.
Either method of allocation worksin the Intel MPI Library. In a small test (2 processes on the same computer, tried in Windows* and Linux*, just transferring a single float array), I did not see a performance difference between MPI_Alloc_mem and malloc. This could very well change for a different scenario, but switching between the two is not difficult.
Hi James, Thanks for the quick response, this is great news. I have my own array library and this requires support for upto 5D arrays and so I didn't want to re write the library w/o confirmation one way or the other.