OpenHPC container images

(Everything defaults to podman as it provides the possibility to build containers without running as root. See https://podman.io/blogs/2019/10/28/podman-with-nfs.html for details.)

The OpenHPC project currently provides the following container images:

• ohpc-gnu9:2.0.0
• ohpc-gnu9-mpich:2.0.0
• ohpc-gnu9-mvapich2:2.0.0
• ohpc-gnu9-openmpi4:2.0.0

All containers images are also available with the version specifier latest.

ohpc-gnu9 is based on centos8 and all other container images are based on ohpc-gnu9.

Currently all container images are reachable at quay.io/ohpc/:

podman pull quay.io/ohpc/ohpc-gnu9:latest

Rebuilding the OpenHPC container images

The OpenHPC container images can be locally rebuilt just by running make. To override the version with which the container images are tagged use a command like this: VERSION=10.30 make.

Using the command make push the container images will be built and pushed to their default location. The container registry can be changed with the following command: DEST=container.registry/path make push.

Using the OpenHPC container images

One possible use case is to have quick access to the OpenHPC provided compiler and MPI compiler:

$ cat test/hello.c 
#include <stdio.h>

int main()
{
	printf("Hello, world!\n");
}
$ podman run --rm -v `pwd`/test:/tmp:z quay.io/ohpc/ohpc-gnu9:2.0.0 gcc -o /tmp/hello /tmp/hello.c
$ podman run --rm -v `pwd`/test:/tmp:z quay.io/ohpc/ohpc-gnu9:2.0.0 /tmp/hello
Hello, world!
$ podman run --rm -v `pwd`/test:/tmp:z quay.io/ohpc/ohpc-gnu9-mpich:2.0.0 mpicc -o /tmp/mpi-hello /tmp/mpi-hello.c
$ podman run --rm -v `pwd`/test:/tmp:z quay.io/ohpc/ohpc-gnu9-mpich:2.0.0 /tmp/mpi-hello
 Hello, world (1 procs total)
    --> Process #   0 of   1 is alive. ->962f5dcd6374

It is also possible to build containers based on the OpenHPC containers:

$ cat Dockerfile
FROM quay.io/ohpc/ohpc-gnu9-mpich:latest

COPY mpi-hello.c /home
RUN mpicc -o /home/mpi-hello /home/mpi-hello.c

WORKDIR /home
CMD mpirun -np 8 /home/mpi-hello

$ podman build . --tag=my-ohpc-container
$ podman run my-ohpc-container

 Hello, world (8 procs total)
    --> Process #   0 of   8 is alive. ->c7121a4fcc95
    --> Process #   1 of   8 is alive. ->c7121a4fcc95
    --> Process #   2 of   8 is alive. ->c7121a4fcc95
    --> Process #   3 of   8 is alive. ->c7121a4fcc95
    --> Process #   4 of   8 is alive. ->c7121a4fcc95
    --> Process #   5 of   8 is alive. ->c7121a4fcc95
    --> Process #   6 of   8 is alive. ->c7121a4fcc95
    --> Process #   7 of   8 is alive. ->c7121a4fcc95