On Mar 12, 2011, at 1:04 , Dave Love wrote: > "Esztermann, Ansgar" <[email protected]> writes: > >> Well, core IDs are unique only within the same socket ID (for older CPUs, >> say Harpertown), so I would assume the same holds for node IDs -- it's just >> that node IDs aren't displayed for Magny-Cours. > > What exactly would you expect? hwloc's lstopo(1) gives the following > under current RedHat 5 (Linux 2.6.18-238.5.1.el5) on a Supermicro H8DGT > (Opteron 6134). It seems to have the information exposed, but I'm not > sure how it should be. (I guess GE should move to hwloc rather than > PLPA, which is now deprecated and not maintained.) > > Machine (63GB) > Socket #0 (32GB) > NUMANode #0 (phys=0 16GB) + L3 #0 (5118KB) > L2 #0 (512KB) + L1 #0 (64KB) + Core #0 + PU #0 (phys=0) > L2 #1 (512KB) + L1 #1 (64KB) + Core #1 + PU #1 (phys=1) > L2 #2 (512KB) + L1 #2 (64KB) + Core #2 + PU #2 (phys=2) > L2 #3 (512KB) + L1 #3 (64KB) + Core #3 + PU #3 (phys=3) > NUMANode #1 (phys=1 16GB) + L3 #1 (5118KB) > L2 #4 (512KB) + L1 #4 (64KB) + Core #4 + PU #4 (phys=4) > L2 #5 (512KB) + L1 #5 (64KB) + Core #5 + PU #5 (phys=5) > L2 #6 (512KB) + L1 #6 (64KB) + Core #6 + PU #6 (phys=6) > L2 #7 (512KB) + L1 #7 (64KB) + Core #7 + PU #7 (phys=7) ...
That's exactly what I'd expect... The interface at /sys/devices/system/cpu/cpuN/topology/ doesn't know about NUMANodes, only about Sockets and cores. Thus, cores #0 and #4 in the output above have the same core ID, and SGE interprets that as being one core with two threads. A. -- Ansgar Esztermann DV-Systemadministration Max-Planck-Institut für biophysikalische Chemie, Abteilung 105 _______________________________________________ users mailing list [email protected] https://gridengine.org/mailman/listinfo/users
