QLogic OFED+ Host Software User Guide, Rev. B

5–Using Other MPIs
Intel MPI
When using csh for launching MPI jobs, run the following command:
$ source /bin64/mpivars.csh
Substitute bin if using 32-bit.
Compiling Intel MPI Applications
As with QLogic MPI, QLogic recommended that you use the included wrapper
scripts that invoke the underlying compiler. The default underlying compiler is
GCC, including gfortran. Note that there are more compiler drivers (wrapper
scripts) with Intel MPI than are listed here (see Table 5-6); check the Intel
documentation for more information.
Table 5-6. Intel MPI Wrapper Scripts
Wrapper Script Name
Language
mpicc
mpiCC
C
C++
mpif77 Fortran 77
mpif90 Fortran 90
mpiicc
mpiicpc
mpiifort
C (uses Intel C compiler)
C++ (uses Intel C++ compiler)
Fortran 77/90 (uses Intel Fortran compiler)
To compile your program in C using the default compiler, type:
$ mpicc mpi_app_name.c -o mpi_app_name
To use the Intel compiler wrappers (mpiicc, mpiicpc, mpiifort), the Intel
compilers must be installed and resolvable from the user’s environment.
Running Intel MPI Applications
Here is an example of a simple mpirun command running with four processes:
$ mpirun -np 4 -f mpihosts mpi_app_name
For more information, follow the Intel MPI instructions for usage of mpirun,
mpdboot, and mpiexec (mpirun is a wrapper script that invoked both mpdboot
and mpiexec). Remember to use -r ssh with mpdboot if you use ssh.
Pass the following option to mpirun to select TMI:
-genv I_MPI_FABRICS tmi
Pass the following option to mpirun to select uDAPL:
D000046-005 B 5-13