Thread-compliant library

HP-MPI provides a thread-compliant library. By default, the non thread-compliant library (libmpi) is used when running HP-MPI jobs. Linking to the thread-compliant library is now required only for applications that have multiple threads making MPI calls simultaneously. In previous releases, linking to the thread-compliant library was required for multithreaded applications even if only one thread was making a MPI call at a time. See Table B-1 “HP-MPI implementation of standard-flexible issues”.

To link with the thread-compliant library on HP-UX and Linux systems, specify the -libmtmpi option to the build scripts when compiling the application.

To link with the thread-compliant library on Windows systems, specify the -lmtmpi option to the build scripts when compiling the application.

Application types that no longer require linking to the thread-compliant library include: