HPC Fluent Capabilities -- CFD Online Discussion Forums

September 11, 2022, 04:15	HPC Fluent Capabilities	#1
MarcoC501 Member MC Join Date: Apr 2021 Posts: 43 Rep Power: 5	Hello, I am currentily running a DES/LES with Fluent on a HPC cluster, and I would like to know from your experience what is the best compromise between number of nodes and cores. The mesh has 70M cells, and for each node I can access maximum 128 CPUs: I saw that if I use 64 cores, the simulation is faster then if I use 96 cores, which makes me a bit doubtful since I heard people running on many more cores (1000+) and their simulation performance was clearly boosted. For sure there is some technical information I am missig and I would really appreciate if you could help me Thanks a lot Marco

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