Does Open MPI support 64 bit environments?
Yes, Open MPI is 64 bit clean. You should be able to use Open MPI on 64 bit architectures and operating systems with no difficulty. 20. Does Open MPI support execution in heterogeneous environments? As of v1.1, Open MPI requires that the size of C, C++, and Fortran datatypes be the same on all platforms within a single parallel application with the exception of types represented by MPI_BOOL and MPI_LOGICAL — size differences in these types between processes are properly handled. Endian differences between processes in a single MPI job are properly and automatically handled. Prior to v1.1, Open MPI did not include any support for data size or endian heterogeneity. 21. Does Open MPI support parallel debuggers? Yes. Open MPI supports the TotalView API for parallel process attaching, which several parallel debuggers support (e.g., DDT, fx2). As part of v1.2.4 (released in September 2007), Open MPI also supports the TotalView API for viewing message queues in running MPI processes. See thi
