Parallel Programming Guide for HP-UX Systems

MPI

Debugging

Chapter 260

$MPI_ROOT/bin/mpicc:

HP MPI 02.00.00.00 (dd/mm/yyyy) B6060BA - HP-UX 11.i

This command returns the HP MPI version number, the date this version was released, HP

MPI product numbers, and the operating system version.

Building

You can solve most build-time problems by referring to the documentation for the compiler

you are using.

If you use your own build script, specify all necessary input libraries. To determine what

libraries are needed, check the contents of the compilation utilities stored in the HP MPI

$MPI_ROOT/bin subdirectory.

HP MPI supports a 64-bit version of the MPI library on platforms running HP-UX 11i and

higher. Both 32- and 64-bit versions of the library are shipped with HP-UX 11i and higher. For

HP-UX 11i and higher, you cannot mix 32-bit and 64-bit executables in the same application.

HP MPI does not support Fortran applications that are compiled with the following option:

•+autodblpad— Fortran 77 programs

Starting

CAUTION Starting a MPI executable without the mpirun utility is no longer supported.

For example, applications previously started by using a.out -np # [args]

must now be started using mpirun -np # a.out [args].

When starting multihost applications, make sure that:

• All remote hosts are listed in your .rhosts ﬁle on each machine and you can remsh to the

remote machines. The mpirun command has the -ck option you can use to determine

whether the hosts and programs speciﬁed in your MPI application are available, and

whether there are access or permission problems.

• Application binaries are available on the necessary remote hosts and are executable on

those machines

• The -sp option is passed to mpirun to set the target shell PATH environment variable.

You can set this option in your appﬁle

• The .cshrc ﬁle does not contain tty commands such as stty if you are using a

/bin/csh-based shell