Using MPICH on Aurora@ALCF

This page describes how to build and use MPICH on the 'Aurora' machine at Argonne. Aurora is uses Intel CPUs and GPUs with the Cray Slingshot interconnect. Support for Slingshot is provided via the system libfabric.

Prerequisite

As of 03/01/2024, it is best to build the MPICH git main branch for use on Aurora.

Build MPICH

Build ZE-enabled MPICH for use with the Cray PALS launcher

./autogen.sh
./configure --prefix=/home/raffenet/proj/mpich/i --with-device=ch4:ofi --with-libfabric=/opt/cray/libfabric/1.15.2.0 --with-ze --with-pm=no --enable-g=dbg --with-pmi=pmix --with-pmix=/usr CC=icx CXX=icpx FC=ifx
make -j16 install

A correctly configured MPICH build should print the following message in configure output.

*****************************************************
***
*** device      : ch4:ofi
*** shm feature : auto
*** gpu support : ZE
***
*****************************************************

Running MPI Application

TBD

Common Issues

TBD