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Speed of VASP job on cluster

PostPosted: Fri Aug 03, 2018 3:11 pm
by prodyutroy
When I am running a vasp job on a cluster assigning 32 nos. of cores on a single node the job completes two to three times more faster than that when I am running the same job with same or more no. of cores sharing on two nodes. Why is this happenning ?

Re: Speed of VASP job on cluster

PostPosted: Wed Aug 08, 2018 11:56 am
by alex
Hi,

you have a very slow network connection or did not adapt NPAR/KPAR.

Cheers,

alex