Misha,
We have the potential to have to swap whole jobs out of memory on a
complete node. As a result, I recommend 1.5-2.0 times memory in swap if
this is a consideration. I do know there's likely to be a bit of
discussion as this varies widely from site to site and based on
requirements.
gerry
Mikhail Kuzminsky wrote:
A lot of time ago it was formulated simple rule for swap partition size
(equal to main memory size).
Currently we all have relative large RAM on the nodes (typically, I
beleive, it is 2 or more GB per core; we have 16 GB per dual-socket
quad-core Opteron node). What is typical modern swap size today?
I understand that it depends from applications ;-) We, in particular,
practically don't have jobs which run "out-of-RAM". For single core
dual-socket Opteron nodes w/4GB RAM per node and "molecular modelling
workload" we used 4 GB swap partition.
But what are the reccomendations of modern praxis ?
Mikhail Kuzminksy
Computer Assistance to Chemical Research Center
Zelinsky Inst. of Organic Chemistry
Moscow _______________________________________________
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