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Updated at: Feb 10, 2022 GMT+08:00

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Intel MPI

Scenarios

This section describes how to install and use Intel MPI (for example, l_mpi_2018.0.128) on an ECS.

Prerequisites

You have configured the ECS password-free login.

Procedure

Install Intel MPI.
1. Download Intel MPI.
  Download path: https://software.intel.com/en-us/intel-mpi-library
2. Run the following commands to decompress and install Intel MPI:
  For example, run the following commands to decompress and install l_mpi_2018.0.128.tgz:
  
  # tar -xvf l_mpi_2018.0.128.tgz
  
  # cd l_mpi_2018.0.128/
  
  # ./install.sh
  
  Figure 1 Successful Intel MPI installation
Configure environment variables.
1. Add the following statements in ~/.bashrc as a common user:
  export PATH=$PATH:/opt/intel/impi/2018.0.128/bin64
  
  export LD_LIBRARY_PATH=/opt/intel/impi/2018.0.128/lib64
2. Run the following command to import environment variables:
  # source ~/.bashrc
Run the following command to check whether environment variables are imported successfully:
# which mpirun

Figure 2 Successful importing of environment variables

If information shown in Figure 2 is displayed, the environment variables have been imported.
Run the following commands to run Intel MPI on an ECS:
1. Run the following commands to generate an executable file:
  # cd
  
  # mpicc hello.c -o intel_hello
2. Run the following command to run Intel MPI on an ECS:
  # mpirun -np 2 /root/intel_hello
  
  Figure 3 Running Intel MPI on an ECS

Parent topic: Installing and Using MPIs

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