[wwwdocs] GCC 12: OpenACC
Commit Message
Hi!
Right in time for the GCC 12.1 release -- yay \o/ -- I've pushed
to wwwdocs commit c6a7f816f3531d5727674620d74818fe1d150467
"GCC 12: OpenACC", see attached.
Online: <https://gcc.gnu.org/gcc-12/changes.html#openacc>.
Grüße
Thomas
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From c6a7f816f3531d5727674620d74818fe1d150467 Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <thomas@codesourcery.com>
Date: Fri, 6 May 2022 11:03:13 +0200
Subject: [PATCH] GCC 12: OpenACC
---
htdocs/gcc-12/changes.html | 35 ++++++++++++++++++++++++++++++++---
1 file changed, 32 insertions(+), 3 deletions(-)
@@ -170,9 +170,38 @@ You may also want to check out our
>OpenMP Implementation Status</a> can be found in the libgomp manual.</li>
</ul>
</li>
- <li>The new warning flag <code>-Wopenacc-parallelism</code> was added for
- OpenACC. It warns about potentially suboptimal choices related to
- OpenACC parallelism.
+ <li id="openacc">
+ Version 2.6 of the <a href="https://www.openacc.org/">OpenACC</a>
+ specification continues to be maintained and improved in the C, C++ and
+ Fortran compilers.
+ See the <a href="https://gcc.gnu.org/wiki/OpenACC/Implementation%20Status#status-12">implementation
+ status</a> section on the OpenACC wiki page and the
+ <a href="https://gcc.gnu.org/onlinedocs/gcc-12.1.0/libgomp/Enabling-OpenACC.html">
+ run-time library documentation</a> for further information.
+ In addition to general performance tuning and bug fixing, new features
+ include:
+ <ul>
+ <li>
+ OpenACC worker parallelism for <a href="#amdgcn">AMD GPUs</a>
+ (already for a long time supported for <a href="#nvptx">Nvidia
+ GPUs</a>).
+ </li>
+ <li>
+ Data privatization/sharing at the OpenACC gang level.
+ </li>
+ <li>
+ Considerable improvements for the experimental OpenACC 'kernels'
+ decomposition
+ (<a href="https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gcc/Optimize-Options.html#index-param"><code>--param
+ openacc-kernels=decompose</code></a>).
+ </li>
+ <li>
+ A new warning
+ flag <a href="https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gcc/Warning-Options.html#index-Wopenacc-parallelism"><code>-Wopenacc-parallelism</code></a>
+ to warn about potentially suboptimal choices related to OpenACC
+ parallelism.
+ </li>
+ </ul>
</li>
<li>The offload target code generation for OpenMP and OpenACC can now
be better adjusted using the new <a
--
2.35.1