Parallel Programming Guide for HP-UX Systems

MPI

Compiling and Linking

Chapter 2 17

Compiling and Linking

Compiling applications

The compiler you use to build HP MPI applications depends upon which programming

language you use. The HP MPI compiler utilities are shell scripts that invoke the appropriate

native compiler. You can pass the pathname of the MPI header ﬁles using the -I option and

link an MPI library (for example, the diagnostic or thread-compliant library) using the -Wl, -L

or -l option.

By default, HP MPI compiler utilities include a small amount of debug information in order to

allow the TotalView debugger to function. However, certain compiler options are incompatible

with this debug information. Use the -notv option to exclude debug information. The -notv

option will also disable TotalView usage on the resulting executable. The -notv option applies

to archive libraries only.

HP MPI 2.0 now offers a -show option to compiler wrappers. When compiling by hand, run as

mpicc -show and a line will print displaying exactly what the job was going to do.

Compilation utilities

HP MPI provides separate compilation utilities and default compilers for the languages

shown in the following tables.

Table 2-1 Default compilers for HP-UX

Language Utility Default compiler

C mpicc /opt/ansic/bin/cc

C++ mpiCC /opt/aCC/bin/aCC

Fortran 77 mpif77 /opt/fortran/bin/f77

Fortran 90 mpif90 /opt/fortran90/bin/f90