Now that the GCN/OpenACC patches for this have been committed today,
I think it makes sense to add it to the documentation.
(I was told that some follow-up items are still pending, but as
the feature does work ...)
Cf. also Andrew's talk of last year,
https://linuxplumbersconf.org/event/7/contributions/749/attachments/560/988/AMD_GCN_Update_-_LPC_2020.pdf
which I utilized when writing the attached wwwdocs patch.
Comments and/or suggestions?
Tobias
-----------------
Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, 80634
München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: Thomas
Heurung, Frank Thürauf; Sitz der Gesellschaft: München; Registergericht
München, HRB 106955
gcc-12/changes.html (GCN): >1 workers per gang
diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html
index 9c2799cf..05e24737 100644
--- a/htdocs/gcc-12/changes.html
+++ b/htdocs/gcc-12/changes.html
@@ -119,10 +119,14 @@
<h3 id="amdgcn">AMD Radeon (GCN)</h3>
<ul>
<li>Debug experience with ROCGDB has been improved.</li>
<li>Support for the type <code>__int128_t</code>/<code>integer(kind=16)</code>
was added.</li>
+ <li>When used as OpenACC device: the limitation of 1 worker per gang, 2 gangs
+ per CU has been lifted; now up to 16 workers per gang and 40 gangs per CU
+ are supported. (Except that the hardware limit of 40 workers total may
+ not be exceeded.)</li>
</ul>
<!-- <h3 id="arc">ARC</h3> -->
<!-- <h3 id="arm">ARM</h3> -->
