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

1. 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
      

2. 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

3. 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.

4. 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