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Help Center> High Performance Computing> User Guide> Typical Applications in the BMS Scenario> Installing and Using MPIs (Kunpeng BMS)> MPICH

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

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MPICH

Scenarios

This section describes how to install and use MPICH (version mpich-3.3.2 is used as an example) in a Kunpeng BMS cluster.

Perform the operations on each BMS in a cluster.

Prerequisites

Password-free login has been configured between BMSs in the cluster.

Procedure

Install MPICH.
1. Download MPICH.
  Download path: https://aur.archlinux.org/packages/mpich/
2. Decompress the installation package and install MPICH.
  For example, if the installation package is mpich-3.3.2.tar.gz, run the following commands:
  
  # tar -xvf mpich-3.3.2.tar.gz
  
  # cd mpich-3.3.2/
  
  # ./configure --prefix=/opt/mpich-332 --with-device=ch4:ucx --with-ucx=/pub/mpi/ucx160/ --enable-fast=O3 CFLAGS="-fPIC -std=gnu11" FFLAGS=-fPIC CXXFLAGS=-fPIC FCFLAGS=-fPIC
  
  # make -j 128 && make install
  
  Figure 1 Successfully installed MPCHI
Configure environment variables.
1. Add the following content to ~/.bashrc as a common user:
  export PATH=/opt/mpich-332/bin: $PATH
  
  export LD_LIBRARY_PATH=/opt/mpich-332/lib
2. Run the following command to import environment variables:
  $ source ~/.bashrc
Run the following command to check whether environment variables have been imported:
$ which mpirun

Figure 2 Successful imported MPICH environment variables

If information shown in Figure 2 is displayed, the environment variables have been imported.
Run MPICH on a BMS.
1. Run the following command to generate an executable file:
  $ mpicc hello.c -o hello
2. Run the following command to run MPICH:
  $ mpirun -np 2 /home/rhel/hello
  
  Figure 3 Running MPICH on a BMS

Parent topic: Installing and Using MPIs (Kunpeng BMS)

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