Hello We only add hwloc Group objects when necessary. On your system, each processor group contains a single NUMA node, so these Groups would not really bring additional information about the hierarchy of resources. If you had a bigger system with, let's say, 4 NUMA nodes, with 2 of them in each processor groups, hwloc would report those as hwloc Group objects.
Does this help? I can clarify the FAQ if needed. Brice Le 29/11/2017 14:25, David Creasy a écrit : > Hello, > > Thank you to all contributors to hwloc - very useful. > > In the FAQ, under the section "What are these Group objects in my > topology?" it says that they are used for "Windows processor groups". > However, I'm either not seeing this, or I'm looking in the wrong > place. On a system with two processor groups, I get: > > C:\temp\hwloc-win64-build-1.11.8\bin>hwloc-info.exe > depth 0: 1 Machine (type #1) > depth 1: 2 NUMANode (type #2) > depth 2: 2 Package (type #3) > depth 3: 2 L3Cache (type #4) > depth 4: 12 L2Cache (type #4) > depth 5: 12 L1dCache (type #4) > depth 6: 12 L1iCache (type #4) > depth 7: 12 Core (type #5) > depth 8: 24 PU (type #6) > > C:\temp\hwloc-win64-build-1.11.8\bin>hwloc-ls.exe > Machine (1506MB total) > NUMANode L#0 (P#0 346MB) + Package L#0 + L3 L#0 (12MB) > L2 L#0 (256KB) + L1d L#0 (32KB) + L1i L#0 (32KB) + Core L#0 > PU L#0 (P#0) > PU L#1 (P#1) > L2 L#1 (256KB) + L1d L#1 (32KB) + L1i L#1 (32KB) + Core L#1 > PU L#2 (P#2) > PU L#3 (P#3) > L2 L#2 (256KB) + L1d L#2 (32KB) + L1i L#2 (32KB) + Core L#2 > PU L#4 (P#4) > PU L#5 (P#5) > L2 L#3 (256KB) + L1d L#3 (32KB) + L1i L#3 (32KB) + Core L#3 > PU L#6 (P#6) > PU L#7 (P#7) > L2 L#4 (256KB) + L1d L#4 (32KB) + L1i L#4 (32KB) + Core L#4 > PU L#8 (P#8) > PU L#9 (P#9) > L2 L#5 (256KB) + L1d L#5 (32KB) + L1i L#5 (32KB) + Core L#5 > PU L#10 (P#10) > PU L#11 (P#11) > NUMANode L#1 (P#1 1160MB) + Package L#1 + L3 L#1 (12MB) > L2 L#6 (256KB) + L1d L#6 (32KB) + L1i L#6 (32KB) + Core L#6 > PU L#12 (P#64) > PU L#13 (P#65) > L2 L#7 (256KB) + L1d L#7 (32KB) + L1i L#7 (32KB) + Core L#7 > PU L#14 (P#66) > PU L#15 (P#67) > L2 L#8 (256KB) + L1d L#8 (32KB) + L1i L#8 (32KB) + Core L#8 > PU L#16 (P#68) > PU L#17 (P#69) > L2 L#9 (256KB) + L1d L#9 (32KB) + L1i L#9 (32KB) + Core L#9 > PU L#18 (P#70) > PU L#19 (P#71) > L2 L#10 (256KB) + L1d L#10 (32KB) + L1i L#10 (32KB) + Core L#10 > PU L#20 (P#72) > PU L#21 (P#73) > L2 L#11 (256KB) + L1d L#11 (32KB) + L1i L#11 (32KB) + Core L#11 > PU L#22 (P#74) > PU L#23 (P#75) > > I definitely have 2 processor groups: > C:\Windows\system32>bcdedit /enum | find "group" > groupsize 6 > maxgroup Yes > > And you can see this because the processor numbers above in the second > numa node start at 64. Also, calling GetActiveProcessorGroupCount() > returns 2. > > I was expecting to get "2" back from: > hwloc_get_nbobjs_by_type(hwlocTopology_, HWLOC_OBJ_GROUP) > > but that returns 0. Am I doing something wrong? > > Thank you! > > David > _______________________________________________ hwloc-users mailing list hwloc-users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/hwloc-users
