Hi Brice,
how are you doing? I hope you are fine. We are all well and safe.
I have been running hwloc on IBM Power LPAR VM with only 1 CPU core and 8
PUs [1]. There is only one NUMA node. The numbering is however quite
strange, the NUMA node number is "2". See [2].
hwloc reports "Topology does not contain any NUMA node, aborting!"
$ lstopo
Topology does not contain any NUMA node, aborting!
hwloc_topology_load() failed (No such file or directory).
Could you please double-check if this behavior is correct? I believe hwloc
should work on this HW setup.
FYI, we can get it working with --disallowed option [3] (but I think it
should work without this option as well)
Thanks a lot!
Jirka
[1] $ lscpu
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 8
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
[2] There is ONE NUMA node with the number "2":
$ numactl -H
available: 1 nodes (2)
node 2 cpus: 0 1 2 3 4 5 6 7
node 2 size: 7614 MB
node 2 free: 1098 MB
node distances:
node 2
2: 10
[3]
$ lstopo --disallowed
Machine (7615MB total)
Package L#0
NUMANode L#0 (P#0 7615MB)
L3 L#0 (4096KB) + L2 L#0 (1024KB) + Core L#0
L1d L#0 (32KB) + L1i L#0 (48KB)
Die L#0 + PU L#0 (P#0)
PU L#1 (P#2)
PU L#2 (P#4)
PU L#3 (P#6)
L1d L#1 (32KB) + L1i L#1 (48KB)
PU L#4 (P#1)
PU L#5 (P#3)
PU L#6 (P#5)
PU L#7 (P#7)
Block(Disk) "sda"
Net "env2"
_______________________________________________
hwloc-devel mailing list
[email protected]
https://lists.open-mpi.org/mailman/listinfo/hwloc-devel
