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<body><span class="vcard"><a class="email" href="mailto:wendy.wang@intel.com" title="wendy.wang@intel.com">wendy.wang@intel.com</a>
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<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - [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>NEEDINFO
</td>
<td>RESOLVED
</td>
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<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>NOTABUG
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - [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#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - [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:wendy.wang@intel.com" title="wendy.wang@intel.com">wendy.wang@intel.com</a>
</span></b>
<pre>(In reply to Eero Tamminen from <a href="show_bug.cgi?id=82808#c5">comment #5</a>)
<span class="quote">> 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 Sanctuary & Tropics demos when GL_ARB_gpu_shader5 exposed"
href="show_bug.cgi?id=82897">bug 82897</a>, but before that issue
> came up)?</span >
Test on HSW-GT3e with Windows 8.1, Heaven 3 also faster than Heaven 4 by 52%.
Close this bug as not a bug.</pre>
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