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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [r600g]OpenCL driver causes segfault in ImageMagick's Histogram kernel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96488#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [r600g]OpenCL driver causes segfault in ImageMagick's Histogram kernel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96488">bug 96488</a>
from <span class="vcard"><a class="email" href="mailto:vedran@miletic.net" title="Vedran Miletić <vedran@miletic.net>"> <span class="fn">Vedran Miletić</span></a>
</span></b>
<pre>(In reply to jano.vesely from <a href="show_bug.cgi?id=96488#c1">comment #1</a>)
<span class="quote">> That's because global atomics are not implemented in LLVM backend (despite
> driver advertising the extensions).
> Shouldn't be too hard to them.</span >
Are you sure the hardware has the necessary instructions? Tom Stellard
commented on #radeon back in November that implementing global atomics for
r600g will be very very difficult[1].
[1]
<a href="https://people.freedesktop.org/~cbrill/dri-log/index.php?date=2015-11-27&channel=radeon">https://people.freedesktop.org/~cbrill/dri-log/index.php?date=2015-11-27&channel=radeon</a></pre>
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