GHC parallel GC is not doing well on modern many-core machine
I'm testing a small ray-tracer on different many-core machines, like x64 88 core and Aarch64 96 core (on https://packet.net). Parallel GC seems to have throughput problems on more than 24-32 cores.
See this Reddit thread about - https://www.reddit.com/r/haskell/comments/85vwlq/our_lovely_ghc_parallel_gc_on_96_core_arm/
There you may find .eventlog file and PNG with a screenshot.
May be it's time to resurrect Concurrent GC project again?
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 |