Hello, sorry, but my question was, if I use CPUSpecList for a node configuration, why aren’t these cores are isolated from the reservation?
Kind reagrds, Danny P.S.: It’s a shared memory system (SGI UV). > Am 26.07.2016 um 09:39 schrieb Diego Zuccato <[email protected]>: > > > Il 25/07/2016 09:24, Danny Marc Rotscher ha scritto: > >> Could you please tell me, what I’m doing wrong? > I'm really not an expert, but IIUC you're just wasting a lot of CPUs for > a process that shouldn't use so many. Pinning it to one CPU could > improve performance if the user jobs you're running are actually > saturating the machine and are massively interconnected (every task > needs the results of all the others to proceed), so that having a task > that temporarily suspends the user job to do other things could have a > cascade effect on the other tasks. > But under normal workload you shouldn't see any difference. > > PS: which kind of machine is that, with 64 sockets? > > -- > Diego Zuccato > Servizi Informatici > Dip. di Fisica e Astronomia (DIFA) - Università di Bologna > V.le Berti-Pichat 6/2 - 40127 Bologna - Italy > tel.: +39 051 20 95786 > mail: [email protected]
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