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Best usage of EPYC 7763

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Old   November 18, 2022, 11:39
Default Best usage of EPYC 7763
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We got a new cluster at work made up of 4 nodes, each featuring two EPYCs 7763, so in total 512 cores. I have to say I was a bit surprised by this choice because from what I read on this forum for CFD workloads it's more common to use one of the 32 core EPYC variants to take advantage of more memory channels. Is there a situation where our setup has some advantages? Like for example if there's no infiniband and just 10 gigabit ethernet? I don't even know if we have IB to be there a simple way to check? To sum up I'd like to understand the system a bit better to be able to use is as good as possible. Like if it is better at simulating multiple smaller jobs at once rather than one big simulation etc. I can send the large cases to a big private cluster and only use this one for the smaller jobs (but that of course costs money..). BTW each node has 1024 GB RAM, but I don't know how are the slots populated. I do hope they got that bit right though
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