On Wed, Mar 27, 2019 at 01:58:17PM +0200, Or Gerlitz wrote: > On Wed, Mar 27, 2019 at 1:41 PM Leon Romanovsky <leon@xxxxxxxxxx> wrote: > > On Wed, Mar 27, 2019 at 12:07:54PM +0200, Or Gerlitz wrote: > > > On Tue, Mar 19, 2019 at 11:25 AM Leon Romanovsky <leon@xxxxxxxxxx> wrote: > > > > From: Artemy Kovalyov <artemyko@xxxxxxxxxxxx> > > > > > > > > Delete initialization of high order entries in mr cache to decrease initial > > > > memory footprint. When required, the administrator can populate the > > > > entries with memory keys via the /sys interface. > > > > > > Please add here: > > > > > > This approach is very helpful to reduce the per HW function memory > > > footprint in environments such as VMs. Before the patch we see > > > consumption of 0.9GB per function and after the patch about 0.1GB > > > > > > > Signed-off-by: Artemy Kovalyov <artemyko@xxxxxxxxxxxx> > > > > Signed-off-by: Moni Shoua <monis@xxxxxxxxxxxx> > > > > Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx> > > > > > > Reported-by: Shalom Toledo <shalomt@xxxxxxxxxxxx> > > > Acked-by: Or Gerlitz <ogerlitz@xxxxxxxxxxxx> > > > > > > Lets push it into stable kernels, a Fixes tag here will cause that > > > to happen more easily, so please consider that. > > > I'll add it at the "apply" stage. > > Just to make sure, by "add it" you mean the signatures, the text and > the Fixes that? Yes, of course. > > Also, is there any reason not to eliminate the mr cache pre-population > all together? AFAIK, pre-populated cache helps MPI application to start faster and with out-of-box experience. Nobody seems to care enough to challenge this internal assumption. > > Currently we consume 100-200MB per function after the patch which is > also problematic for some > environments.
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