NUMA not detected on Win10 with AMD Ryzen Threadripper
AMD's Threadripper can be configured to be a 1-socket 2-die NUMA system:
Coreinfo.exe:
Logical to Physical Processor Map:
**------------------------------ Physical Processor 0 (Hyperthreaded)
--**---------------------------- Physical Processor 1 (Hyperthreaded)
----**-------------------------- Physical Processor 2 (Hyperthreaded)
------**------------------------ Physical Processor 3 (Hyperthreaded)
--------**---------------------- Physical Processor 4 (Hyperthreaded)
----------**-------------------- Physical Processor 5 (Hyperthreaded)
------------**------------------ Physical Processor 6 (Hyperthreaded)
--------------**---------------- Physical Processor 7 (Hyperthreaded)
----------------**-------------- Physical Processor 8 (Hyperthreaded)
------------------**------------ Physical Processor 9 (Hyperthreaded)
--------------------**---------- Physical Processor 10 (Hyperthreaded)
----------------------**-------- Physical Processor 11 (Hyperthreaded)
------------------------**------ Physical Processor 12 (Hyperthreaded)
--------------------------**---- Physical Processor 13 (Hyperthreaded)
----------------------------**-- Physical Processor 14 (Hyperthreaded)
------------------------------** Physical Processor 15 (Hyperthreaded)
Logical Processor to Socket Map:
******************************** Socket 0
Logical Processor to NUMA Node Map:
****************---------------- NUMA Node 0
----------------**************** NUMA Node 1
Approximate Cross-NUMA Node Access Cost (relative to fastest):
00 01
00: 1.0 1.4
01: 1.7 1.2
However, ghc-8.4.1 doesn't detect the NUMA topology when running with --numa
ghc.EXE: --numa: OS reports NUMA is not available
I haven't attempted dualbooting into Linux, yet, so I can't tell whether it's a Windows-only issue.
Trac metadata
Trac field | Value |
---|---|
Version | 8.4.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Runtime System |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |