>
> Ok then your mask 0x,0x,,,0x,0x
> corresponds exactly to NUMA node 0 (socket 0). Object cpusets can be
> displayed on the command-line with "lstopo --cpuset" or "hwloc-calc numa:0".
>
> This would be OK if you're only spawning threads to the first socket. Do
>
Le 02/03/2022 à 09:39, Mike a écrit :
Hello,
Please run "lstopo -.synthetic" to compress the output a lot. I
will be able to reuse it from here and understand your binding mask.
Package:2 [NUMANode(memory=270369247232)] L3Cache:8(size=33554432)
L2Cache:8(size=524288)
Hello,
Please run "lstopo -.synthetic" to compress the output a lot. I will be
> able to reuse it from here and understand your binding mask.
>
Package:2 [NUMANode(memory=270369247232)] L3Cache:8(size=33554432)
L2Cache:8(size=524288) L1dCache:1(size=32768) L1iCache:1(size=32768) Core:1
Le 01/03/2022 à 17:34, Mike a écrit :
Hello,
Usually you would rather allocate and bind at the same time so
that the memory doesn't need to be migrated when bound. However,
if you do not touch the memory after allocation, pages are not
actually physically allocated, hence
Hello,
Usually you would rather allocate and bind at the same time so that the
> memory doesn't need to be migrated when bound. However, if you do not touch
> the memory after allocation, pages are not actually physically allocated,
> hence there's no to migrate. Might work but keep this in mind.
Le 01/03/2022 à 15:17, Mike a écrit :
Dear list,
I have a program that utilizes Openmpi + multithreading and I want the
freedom to decide on which hardware cores my threads should run. By
using hwloc_set_cpubind() that already works, so now I also want to
bind memory to the hardware cores.
