Re: [gpfsug-discuss] gpfs client and turning off swap

2019-11-09 Thread Jonathan Buzzard
On 08/11/2019 16:52, Skylar Thompson wrote: > We don't run diskless systems, but use cgroups where possible to limit the > damage users can do to a node. We derate the node's total usable memory by > 2GB (OS) + GPFS pagepool to avoid paging whenever possible. > I would add that as the RAM in the

Re: [gpfsug-discuss] gpfs client and turning off swap

2019-11-08 Thread Valdis Klētnieks
On Fri, 08 Nov 2019 10:25:24 -0600, Damir Krstic said: > I was wondering if it's safe to turn off swap on gpfs client machines? we > have a case where checkpointing is swapping and we would like to prevent it > from doing so by disabling swap. However, the gpfs manual admin. GPFS will work just

Re: [gpfsug-discuss] gpfs client and turning off swap

2019-11-08 Thread Skylar Thompson
We don't run diskless systems, but use cgroups where possible to limit the damage users can do to a node. We derate the node's total usable memory by 2GB (OS) + GPFS pagepool to avoid paging whenever possible. On Fri, Nov 08, 2019 at 11:31:20AM -0500, david_john...@brown.edu wrote: > We have most

Re: [gpfsug-discuss] gpfs client and turning off swap

2019-11-08 Thread Damir Krstic
Thanks - that's what I thought. We also (many refreshes ago) ran diskless images with RedHat 6 and GPFS 3.4 and ran into no issues with having swap off. I figured to ask in case something has changed with the Spectrum Scale. Damir On Fri, Nov 8, 2019 at 10:31 AM wrote: > We have most of our

Re: [gpfsug-discuss] gpfs client and turning off swap

2019-11-08 Thread david_johnson
We have most of our clients network booted and diskless — no swap possible. Gpfs still works until someone runs the node out of memory -- ddj Dave Johnson > On Nov 8, 2019, at 11:25 AM, Damir Krstic wrote: > >  > I was wondering if it's safe to turn off swap on gpfs client machines?

[gpfsug-discuss] gpfs client and turning off swap

2019-11-08 Thread Damir Krstic
I was wondering if it's safe to turn off swap on gpfs client machines? we have a case where checkpointing is swapping and we would like to prevent it from doing so by disabling swap. However, the gpfs manual admin. manual states to have swap enabled and sufficiently large, but it does not