MPICH 3.3.1 (CentOS 7)
Documentation
Launch
at CHI@TACC
Launch
at CHI@UC
Description
This appliance is built on top of CC-CentOS7. It includes all Chameleon utilities, such as cc-checks, cc-snapshot, gnocchi collection agent, and cc-cloudfuse.
To run MPI programs, execute the following command, assuming you have compiled a program called mpi.out:
mpiexec -n <nprocs> -hostfile hosts ./mpi.out
To compile an MPI program, use a command such as this one:
mpicc -o hello_world hello_world.c
A simple program to compute the value of pi by numerical integration is included. You can run this program with:
mpiexec -n 4 cpi
Output should look like:
Process 0 of 4 is on mpich.novalocal
Process 1 of 4 is on mpich.novalocal
Process 3 of 4 is on mpich.novalocal
Process 2 of 4 is on mpich.novalocal
pi is approximately 3.1415926544231239, Error is 0.0000000008333307
wall clock time = 0.000164
There are many options for mpiexec, by which multiple executables can be run, hosts can be specified, separate command-line arguments and environment variables can be passed to different processes, and working directories and search paths for executables can be specified.
For more details, run:
mpiexec --help
Keywords
MPI MPICHImage IDs
CHI@TACC: | 5c46d59e-1b15-4c69-b63a-f7c2fadab5cb |
CHI@UC: | a8747942-1bb8-46d0-9a9d-b648734d3154 |
Author
Name: | Ken Raffenetti |
Contact: | raffenet@mcs.anl.gov |
Support
Name: | Ken Raffenetti |
Contact: | raffenet@mcs.anl.gov |
Version: | 2003 |
Created By: | raffenet on July 8, 2019, 9:33 a.m. |
Updated By: | zzhen on June 15, 2022, 8:13 p.m. |