| Message ID | 20160127142025.GD29688@virgil.suse.cz |
|---|---|
| State | New |
| Headers | show |
Hi Martin, On Wed, 27 Jan 2016, Martin Jambor wrote: > So what would you think about the following? Perhaps it is too > verbose but I wanted to mention the few areas users should know > have changed, if they happen to try HSA out. I can certainly > cut it down a bit. I like this. In fact, in one or two spots we even may want to be a little bit longer on the changes.html page. (Definitely a good idea to split this into the shorter announcement and the longer one for the release notes.) > Index: changes.html > =================================================================== > + <li><p>GCC can now generate HSAIL for simple OpenMP device constructs > + if configured with <code>--enable-offload-targets=hsa</code>. A new > + libgomp plugin then run these HSAIL kernels implementing these > + constructs on HSA capable GPUs via standard HSA run-time.</p> "run" -> "runs" "via a standard HSA" "run-time" -> "run time" (since it's a noun) Will everyone know what HSAIL is? Should we expand the acronym at first or note (in parenthesis what it is)? > + <p>If the HSA compilation back-end determines it cannot output HSAIL > + for a particular input, it gives a warning by default. These > + warnings can be suppressed with <code>-Wno-hsa</code>. To give a > + few examples, the HSA back-end does not implement compilation of "back end" > + code using function pointers and variable-sized variables and "variable-sized variables" is a bit confusing. ;-) Is there a better term? "variable-sized arrays" I know, for example. > + <p>When compilation for HSA is enabled, the compiler attempts to > + compile composite OpenMP constructs > + <blockquote><pre> > +#pragma omp target teams distribute parallel for</pre></blockquote> > + into parallel HSA GPU kernels.</p> Above we had "HSAIL kernels", here "HSA GPU kernels". Should we converge on one? > Index: index.html > =================================================================== > +<dt><span> Heterogeneous Systems Architecture support in GCC</span> Here I would omit the "in GCC" since this is our main page. > + <span class="date">[2016-01-27]</span></dt> > + <dd><a href="http://www.hsafoundation.com/"> Heterogeneous Systems > + Architecture 1.0</a> <a href="https://gcc.gnu.org/gcc-6/changes.html#hsa"> > + support was added to GCC.</a> Contributed by Martin Jambor, Martin Liška > + and Michael Matz from SUSE.</dd> How about "to GCC</a>, contributed by..."? Not too long for the main page I'd say. This is okay with the changes/considering the questions above. Gerald
Index: changes.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-6/changes.html,v retrieving revision 1.52 diff -u -r1.52 changes.html --- changes.html 25 Jan 2016 15:09:55 -0000 1.52 +++ changes.html 27 Jan 2016 14:15:49 -0000 @@ -272,6 +272,30 @@ </ul> <!-- <h3 id="avr">AVR</h3> --> +<h3 id="hsa">Heterogeneous Systems Architecture</h3> + <ul> + <li><p>GCC can now generate HSAIL for simple OpenMP device constructs + if configured with <code>--enable-offload-targets=hsa</code>. A new + libgomp plugin then run these HSAIL kernels implementing these + constructs on HSA capable GPUs via standard HSA run-time.</p> + + <p>If the HSA compilation back-end determines it cannot output HSAIL + for a particular input, it gives a warning by default. These + warnings can be suppressed with <code>-Wno-hsa</code>. To give a + few examples, the HSA back-end does not implement compilation of + code using function pointers and variable-sized variables and + parameters, functions with variadic arguments as well as a number of + other less common programming constructs.</p> + + <p>When compilation for HSA is enabled, the compiler attempts to + compile composite OpenMP constructs + <blockquote><pre> +#pragma omp target teams distribute parallel for</pre></blockquote> + into parallel HSA GPU kernels.</p> + </li> + </ul> + + <h3 id="x86">IA-32/x86-64</h3> <ul> <li>GCC now supports the Intel CPU named Skylake with AVX-512 extensions The change to the news on the main page might then be: Index: index.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/index.html,v retrieving revision 1.992 diff -u -r1.992 index.html --- index.html 24 Jan 2016 23:54:36 -0000 1.992 +++ index.html 27 Jan 2016 14:16:25 -0000 @@ -52,6 +52,13 @@ <dl class="news"> +<dt><span> Heterogeneous Systems Architecture support in GCC</span> + <span class="date">[2016-01-27]</span></dt> + <dd><a href="http://www.hsafoundation.com/"> Heterogeneous Systems + Architecture 1.0</a> <a href="https://gcc.gnu.org/gcc-6/changes.html#hsa"> + support was added to GCC.</a> Contributed by Martin Jambor, Martin Liška + and Michael Matz from SUSE.</dd> + <dt><span><a href="gcc-5/">GCC 5.3</a> released</span> <span class="date">[2015-12-04]</span></dt> <dd></dd>