AWS Documentation » AWS ParallelCluster » AWS ParallelCluster User Guide » Using AWS ParallelCluster » Enable Intel MPI

Enable Intel MPI

Intel MPI is available on the AWS ParallelCluster AMIs for alinux, centos7, and ubuntu1604 base_os. Open MPI is placed on the path by default. To enable Intel MPI instead of Open MPI, the Intel MPI module must be loaded. The exact name of the module changes with every update. To see which modules are available, run module avail.

$ module avail

----------------------------------------- /usr/share/Modules/modulefiles ------------------------------------------
dot                        module-git                 null
intelmpi/2019.5            module-info                openmpi/4.0.2
libfabric-aws/1.8.1amzn1.2 modules                    use.own

------------------------------------------------ /etc/modulefiles -------------------------------------------------
mpi/mpich-3.0-x86_64 mpi/mpich-x86_64

To load a module, run module load modulename. You can add this to the script used to run mpirun.

$ module load intelmpi

To see what modules are loaded, run module list.

$ module list
Currently Loaded Modulefiles:
  1) intelmpi/2019.5

To verify that Intel MPI is enabled, run mpirun --version.

$ mpirun --version
Intel(R) MPI Library for Linux* OS, Version 2019 Update 5 Build 20190806 (id: 7e5a4f84c)
Copyright 2003-2019, Intel Corporation.

After the Intel MPI module has been loaded, multiple paths are changed to use the Intel MPI tools. To run code that was compiled by the Intel MPI tools, the Intel MPI module must be loaded first.

Note

Prior to AWS ParallelCluster 2.5.0, Intel MPI is not available on the AWS ParallelCluster AMIs in China (Beijing) and China (Ningxia).