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<body><span class="vcard"><a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> <span class="fn">Eero Tamminen</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [IVB/BYT-M/BDW] Unigine-Heaven4.0 on IVB/BYT-M/BDW performance is slower(↓2x) ) than HSW_GT3e."
href="https://bugs.freedesktop.org/show_bug.cgi?id=82808">bug 82808</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>NEEDINFO
</td>
</tr></table>
<p>
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [IVB/BYT-M/BDW] Unigine-Heaven4.0 on IVB/BYT-M/BDW performance is slower(↓2x) ) than HSW_GT3e."
href="https://bugs.freedesktop.org/show_bug.cgi?id=82808#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [IVB/BYT-M/BDW] Unigine-Heaven4.0 on IVB/BYT-M/BDW performance is slower(↓2x) ) than HSW_GT3e."
href="https://bugs.freedesktop.org/show_bug.cgi?id=82808">bug 82808</a>
from <span class="vcard"><a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> <span class="fn">Eero Tamminen</span></a>
</span></b>
<pre>Heaven v4 is memory bandwidth bound. With its L4, GT3e has more memory
bandwidth than the other HW configurations you listed, so Heaven being faster
there is to be expected.
As to Heaven 3 being faster than Heaven 4, besides being different versions of
the demo, they also use a different version of the Unigine engine, so there can
well be performance affecting differences in what they do.
Is there some other platform (like Windows/Intel or Mesa/Nvidia) where there
isn't a performance difference between v3 and v4? Does old v3 render correctly
with Mesa (hard to say now with <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - force_glsl_extensions_warn=true breaks Unigine demos when GL_ARB_gpu_shader5 exposed"
href="show_bug.cgi?id=82897">bug 82897</a>, but before that issue came up)?</pre>
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