MPICH2 – Fermi

Introduction

MPICH2 is a portable implementation of MPI, a standard for message-passing for distrubuted memory applications used in parallel computing. It provides an MPI implementation that efficiently supports different computation and communication platform including commodity clusters, high-speed networks and proprietry high-end computing systems. MPICH2 is Free Software and is available for most flavours of Unix and Microsoft Windows.

MPICH2 provides a separation of process management and communication. The default runtime environment consists of a set of daemons, called mpd, that establish communication among the machines to be used before application process startup, thus providing a clearer picture of what is wrong when communication cannot be established and providing a fast and scalable startup mechanism when parallel jobs are started.

MPICH2 on fermi cluster

Fermi cluster has mpich2-1.4.1p1 installed on all the four nodes.

MPICH2 is an all-new implementation of the MPI Standard, designed to implement all of the MPI-2 additions to MPI like dynamic process management, one-sided operations, parallel I/O, and other extensions making it more robust, efficient, and convenient to use.

How to Use:

Login to fermi1.serc.iisc.ernet.in with your computational loginid .

On fermi cluster, MPICH2 is installed in /opt/mpich2-1.4.1p1

Users have to set the enviromental variable PATH in order to use MPICH2.

MPICH2 compiled with gcc:

setenv PATH /opt/mpich2-1.4.1p1/gcc/bin:$PATH

for tcsh and csh, or

export PATH=/opt/mpich2-1.4.1p1/gcc/bin:$PATH

for bash and sh before Compiling and Linking

MPICH2 compiled with Intel compilers:

setenv PATH /opt/mpich2-1.4.1p1/intel/bin:$PATH

for tcsh and csh, or

export PATH=/opt/mpich21.4.1p1/intel/bin:$PATH

for bash and sh before Compiling and Linking

Compiling and Linking

Users can use mpicc, mpicxx, mpif77, and mpif90 commands, for C, C++, Fortran 77, and Fortran 90 programs, respectively.

Running Programs

After the program had successfully compiled and the executable has been created, users can use mpiexec to run their jobs.

Documentation:

MPICH2 User Guide

MPICH2 User Guide PDF

Report Problems to:

If you encounter any problem in using this software please report to SERC helpdesk at the email address helpdesk_serc or contact System Administrators in #109 (SERC)