Hello,
The documentation for membar in document ptx_sa_2.3.pdf contains a little documentation mistake on page 140:
.level = { .cta, ,gl, ,sys };
This should probably be:
.level = { .cta, .gl, .sys };
(dot instead of comma)
However, now I am not so sure anymore, down below it seems to display a list:
membar.{cta,gl} introduced in PTX ISA version 1.4.
membar.sys introduced in PTX ISA version 2.0.
Target ISA Notes membar.{cta,gl} supported on all target architectures.
membar.sys requires sm_20 or later.
^ So maybe comma is allowed in the list ?
(Probably not though, probably only allowed to select one, so it probably has to be a dot External Image)
Bye,
Skybuck.