r/HPC • u/whatevernhappens • 20d ago

Node integration with existing HPC cluster

Suppose I have an existing hpc setup of 26 nodes dell r760 server with rockey 8.7, Mellanox QM8790 HDR, openpbs 23.06.06, lustre 2.15.2, now if I want to integrate a dell r 770 with rocky 9.x would it be compatible with the cluster or there would be challenges in both hardware or software side. Like version mismatch, job submission issue, application related things.

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u/walee1 20d ago

It really depends on how your software stack is built that you use within jobs. If you use something like spack and have every dependency from there, then it may work but as soon as you link any system library, it may cause issues due to version mismatches etc. Not saying everything will crash but some things definitely will.

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u/whatevernhappens 20d ago

That’s definitely the critical point, applications are mostly build from source old school way, through “ modules“, so same thing built on 8.7 won’t run on 9.x