[gpfsug-discuss] gpfs client and turning off swap

[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_johnson at brown.edu wrote:
> 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 <damir.krstic at gmail.com> wrote:
> > 
> > ???
> > 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 distinguish between clients and IO servers. 
> > 
> > Let me know when you get a chance.

-- 
-- Skylar Thompson (skylar2 at u.washington.edu)
-- Genome Sciences Department, System Administrator
-- Foege Building S046, (206)-685-7354
-- University of Washington School of Medicine