[CP2K-user] [CP2K:17012] CP2K Hardware Requirements

Nícolas nisonoda81 at gmail.com
Fri May 20 14:17:27 UTC 2022


Hi everyone!

According to this documentation: 
https://brehm-research.de/files/spec_tutorial_2018.pdf I need to have 4 GiB 
of RAM per CPU core, but I can run CP2K with 128 process on a machine with 
2 sockets of 32 cores per socket and 2 thread per core, totalizing 128 
threads and 64 cores, although that machine has only 128GB of RAM.

Does anyone knows why can I do this?

P.S.: In another machine with 2 sockets of 64 cores per socket, 2 thread 
per core and 512GB of RAM, when I run CP2K with 128 proccess I got Out Of 
Memory(OOM).

Thank you.
Nícolas

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