Programming Environment

Compilers

The Lawrence HPC programming environment has the choice of two compilers: Intel and Gnu 4.8.5 (gcc).

OpenMP

Two options in Lawrence are available for OpenMP: OpenMP Intel and Gnu.

To choose a version of OpenMP, add the version number and "/intel" or "/gcc" to the module command.

# For the OpenMPI module with Gnu:
[[e-mail]@login ~]$ module load openmpi-1.6/gcc

############## or ################

#For the OpenMPI module with OpenMP Intel:
[[e-mail]@login ~]$ module load openmpi-1.6/intel

MPI

MPI's available with Lawrence: open MPI, mpich (ethernet), and mvapich (infinaband), intel impi

MPI Platform	Module Name	Module Name
Open MPI	openmpi-1.6/gcc	openmpi-1.6/intel
	openmpi-1.8/gcc	openmpi-1.8/intel
	openmpi-2.0/gcc	openmpi-2.0/intel
mpich	mpich/gcc	mpich/intel
mvapich	mvapich2-2.2/gcc	mvapich2-2.2/intel

[[e-mail]@login ~]$ module avail
------------------------------------------- /usr/share/Modules/modulefiles --------------------------------------------
dot         module-git  module-info modules     null        use.own

-------------------------------------------------- /act/modulefiles ---------------------------------------------------
cuda-9.1           intel              mvapich2-2.2/gcc   openmpi-1.6/intel  openmpi-2.0/gcc
gaussian/16        mpich/gcc          mvapich2-2.2/intel openmpi-1.8/gcc    openmpi-2.0/intel
impi               mpich/intel        openmpi-1.6/gcc    openmpi-1.8/intel

To load/unload an MPI module:

############## Load ################
[[e-mail]@login ~]$ module load openmpi-2.0/gcc

############# Unload ###############
[[e-mail]@login ~]$ module unload openmpi-2.0/gcc

To view the version of MPI in use:

[[e-mail]@login ~]$ mpirun --version
[[e-mail]@login ~]$ mpirun --version
mpirun (Open MPI) 2.0.1

Report bugs to http://www.open-mpi.org/community/help/