Hello, Somebody already reported a similar problem. If I remember correctly, it was kernel bug. /sys/devices/system/cpu*/cache/index*/ contains erroneous virtual files. You should upgrade to a more recent kernel.
In the vast majority of cases, hwloc does nothing but reading what the kernel says anyway. Brice On 29/04/2010 04:42, Hao Wang wrote: > Hi guys > > I use hwloc-1.0rc1 on AMD Barcelona machine (AMD Opteron Processor > 8350). But, it looks like hwloc-1.0rc1 detects my machine with a problem: > > lstopo command output information is below: > > Machine (16GB) > NUMANode #0 (phys=0 4015MB) + Socket #0 > L3 #0 (2048KB) + L2 #0 (512KB) + L1 #0 (512KB) + Core #0 + PU #0 > (phys=0) > L3 #1 (2048KB) + L2 #1 (512KB) + L1 #1 (512KB) + Core #1 + PU #1 > (phys=1) > L3 #2 (2048KB) + L2 #2 (512KB) + L1 #2 (512KB) + Core #2 + PU #2 > (phys=2) > L3 #3 (2048KB) + L2 #3 (512KB) + L1 #3 (512KB) + Core #3 + PU #3 > (phys=3) > NUMANode #1 (phys=1 4040MB) + Socket #1 > L3 #4 (2048KB) + L2 #4 (512KB) + L1 #4 (512KB) + Core #4 + PU #4 > (phys=4) > L3 #5 (2048KB) + L2 #5 (512KB) + L1 #5 (512KB) + Core #5 + PU #5 > (phys=5) > L3 #6 (2048KB) + L2 #6 (512KB) + L1 #6 (512KB) + Core #6 + PU #6 > (phys=6) > L3 #7 (2048KB) + L2 #7 (512KB) + L1 #7 (512KB) + Core #7 + PU #7 > (phys=7) > NUMANode #2 (phys=2 4040MB) + Socket #2 > L3 #8 (2048KB) + L2 #8 (512KB) + L1 #8 (512KB) + Core #8 + PU #8 > (phys=8) > L3 #9 (2048KB) + L2 #9 (512KB) + L1 #9 (512KB) + Core #9 + PU #9 > (phys=9) > L3 #10 (2048KB) + L2 #10 (512KB) + L1 #10 (512KB) + Core #10 + PU > #10 (phys=10) > L3 #11 (2048KB) + L2 #11 (512KB) + L1 #11 (512KB) + Core #11 + PU > #11 (phys=11) > NUMANode #3 (phys=3 4040MB) + Socket #3 > L3 #12 (2048KB) + L2 #12 (512KB) + L1 #12 (512KB) + Core #12 + PU > #12 (phys=12) > L3 #13 (2048KB) + L2 #13 (512KB) + L1 #13 (512KB) + Core #13 + PU > #13 (phys=13) > L3 #14 (2048KB) + L2 #14 (512KB) + L1 #14 (512KB) + Core #14 + PU > #14 (phys=14) > L3 #15 (2048KB) + L2 #15 (512KB) + L1 #15 (512KB) + Core #15 + PU > #15 (phys=15) > > I'm not sure whether hwloc gave out the correct information. From my > understanding, L3 cache should be shared by for cores in each socket; > and L1 cache size shouldn't be 512KB. Are there somebody to confirm it? > > Thanks > > - Hao > > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users
