Enable Intel MPI - Amazon ParallelCluster
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Enable Intel MPI

Intel MPI is available on the Amazon ParallelCluster AMIs for alinux2, centos7, ubuntu1804, and ubuntu2004 values for the base_os setting. To use Intel MPI, you must acknowledge and accept the terms of the Intel simplified software license. By default, Open MPI is placed on the path. To enable Intel MPI instead of Open MPI, you must first load the Intel MPI module. Then, you need to install the latest version by using module load intelmpi. The exact name of the module changes with every update. To see which modules are available, run module avail. The output is as follows.

$ module avail ----------------------------------------- /usr/share/Modules/modulefiles ------------------------------------------ dot libfabric-aws/1.8.1amzn1.3 module-info null use.own module-git modules openmpi/4.0.2 ------------------------------------------------ /etc/modulefiles ------------------------------------------------- --------------------------------- /opt/intel/impi/2019.7.217/intel64/modulefiles ---------------------------------- intelmpi
$ module load intelmpi

To see which modules are loaded, run module list.

$ module list Currently Loaded Modulefiles: 1) intelmpi

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

$ mpirun --version Intel(R) MPI Library for Linux* OS, Version 2019 Update 7 Build 20200312 (id: 5dc2dd3e9) Copyright 2003-2020, 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, load the Intel MPI module first.


Intel MPI isn't compatible with Amazon Graviton-based instances.


Before Amazon ParallelCluster version 2.5.0, Intel MPI wasn't available on the Amazon ParallelCluster AMIs in the China (Beijing) and China (Ningxia) Regions.