I'm not sure this post is going to make a lot of sense. But please bear with me! For applications containers are possible using Singularity or Docker of course.
In HPC clusters we tend to have several 'service node' activities, such as the cluster management/ head node, perhaps separate provisioning nodes to spread the load, batch queue system masters, monitoring setups, job submission and dedicated storage nodes. These can all of course be run on a single cluster head node in a small setup (with the exception of the storage nodes). In a larger setup you can run these services in virtual machines. What I am asking is anyone using technologies such as LXD containers to run these services? I was inspired by an Openstack talk by James Page at Canonical, where all the Opestack services were deployed by Juju charms onto LXD containers. So we pack all the services into containers on physical server(s) which makes moving them or re-deploying things very flexible. https://www.youtube.com/watch?v=5orzBITR3X8 While I'm talking abotu containers, is anyone deploying singularity containers in cgroups, and limiting the resources they can use (I'm specifically thinking of RDMA here). ps. I have a terrible sense of deja vu here... I think I asked the Singularity question a month ago. I plead insanity m'lord
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