https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96932
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu.org
--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Crossref: PR100497 - fails on Volta without
membar.sys;
before
atom.global.exch.b32
Unfortunately, compared to pre-Volta, it is very slow - membar.gl is still slow
but a bit less. Using (→ sm_70) fence.sys / fence.gnu instead of
fence.sc.{sys,gnu} (= membar.{sys,gl} on >= sm_70) does not seem to make a
performance difference for PR100497.
