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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - luxrays/slg4 hangs GPU (CEDAR)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80876">80876</a>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>luxrays/slg4 hangs GPU (CEDAR)
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>awatry@gmail.com
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>git
</td>
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<th>Component</th>
<td>Drivers/Gallium/r600
</td>
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<th>Product</th>
<td>Mesa
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=102222" name="attach_102222" title="luxrays diff/patch to disable image support while reproducing bug.">attachment 102222</a> <a href="attachment.cgi?id=102222&action=edit" title="luxrays diff/patch to disable image support while reproducing bug.">[details]</a></span>
luxrays diff/patch to disable image support while reproducing bug.
While working on getting the Luxrays slg4 program running (which is invoked as
part of the luxmark CL-based raytracing benchmark), I encountered some GPU
hangs on the evergreen card I'm using (CEDAR, Radeon 5400-series).
Hardware:
Core i7-2600k
16GB DDR3
Radeon 5400-series PCI express w/ dual 1080p monitors
Software:
Mesa: Git master
LLVM: 3.5svn
drm: fairly recent git
libclc: git master + a few extra patches to implement missing built-ins
luxrays: From <a href="http://src.luxrender.net/luxrays">http://src.luxrender.net/luxrays</a>, with the attached patch.
Steps:
1) Checkout luxrays source from the mercurial repository
2) Apply patch to disable image support in the renderer
3) Build luxrays from source (cmake).
4) run bin/slg4
5) Watch the UI start to pop-up and the GPU reset.
dmesg, kernel source, llvm bitcode to be attached. rlockup_*.c cs trace
available as a 35MB gzipped C file (>300MB uncompressed).</pre>
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