<div dir="ltr">Hi,<div><br></div><div>The main issue i see here is that there's really a few Blender users who has Xeon Phi, and yet requesting to support it in Blender itself would mean complicating release builds (extra compiler etc), and opening can of worms of extra obscure bug reports on platforms which Blender/Cycles developers has no access to.</div><div><br></div><div>Some questions:</div><div>- Last time i looked into ISPC compiler examples, they were requiring adding some special hints on loops and such for an extra vectorization. Is that still a case ?<br></div><div>- Is it only Xeon Phi architecture which will benefit from ISPC ?</div><div>- AFAIR, Xeon Phi supports OpenCL, did you try that ?</div><div>- How's Xeon Phi performance compares to GTX1080 and RX480 ?</div><div><br></div><div>As for tile size, details about this better be discussed in separate topic i think. Otherwise we'll mix too many things in this discussion.</div><div><br></div><div>But once again, those are concerns about having this device enabled in Blender builds. If those are a compile-time option, with minimal changes outside of device/ and kernel entrypoints i'm not really against extra devices support.</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jul 23, 2017 at 3:32 PM, Jaros Milan <span dir="ltr"><<a href="mailto:milan.jaros@vsb.cz" target="_blank">milan.jaros@vsb.cz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div dir="auto">
<div dir="auto"><span style="font-family:sans-serif;font-size:13.696px">Hi,</span>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px"><br>
</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px">I would like to create a new computed devices for Intel Xeon Phi (KNC, KNL).</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px"><br>
</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px">I used my version of new computed devices for rendering of almost all scenes of Agent327 (<a href="http://blender.it4i.cz/rendering/agent-327-operation-barbershop/" target="_blank">http://blender.it4i.cz/<wbr>rendering/agent-327-operation-<wbr>barbershop/</a>).</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px"><br>
</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px">You can find more information here: <a href="http://blender.it4i.cz/research/rendering-on-intel-xeon-phi/" target="_blank">http://blender.it4i.cz/<wbr>research/rendering-on-intel-<wbr>xeon-phi/</a><br>
</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px"><br>
</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px">Now I use Intel compiler but I would like to change it to ISPC open sorce compiler.</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px"><br>
</div>
<div dir="auto" style="font-family:sans-serif;font-size:13.696px">I would like to open question about size of tiles for hybrid system CPU+CUDA/Phi ( CUDA, OpenCL, OpenMP require bigger tile than CPU ). Sergey has the some idea about this.</div>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">Thanks.<br>
<br>
<div data-smartmail="gmail_signature" dir="auto">Best regards<br>
<br>
Milan Jaroš<br>
Research Assistant<br>
<br>
IT4Innovations national supercomputing center<br>
VŠB – Technical University of Ostrava<br>
<br>
17. listopadu 15/2172 | 708 33 Ostrava-Poruba | Czech Republic<br>
<br>
<br>
<br>
e-mail: <a href="mailto:milan.jaros@vsb.cz" target="_blank">milan.jaros@vsb.cz</a> | <wbr> web: <a href="http://industry.it4i.cz" target="_blank">industry.it4i.cz</a> | phone: <a href="tel:+420%20597%20329%20583" value="+420597329583" target="_blank">+420 597 329 583</a> | map: <a href="http://goo.gl/maps/BpF0z" target="_blank">goo.gl/maps/BpF0z</a><br>
<br>
</div>
</div>
</div>
</div>
<br>______________________________<wbr>_________________<br>
Bf-cycles mailing list<br>
<a href="mailto:Bf-cycles@blender.org">Bf-cycles@blender.org</a><br>
<a href="https://lists.blender.org/mailman/listinfo/bf-cycles" rel="noreferrer" target="_blank">https://lists.blender.org/<wbr>mailman/listinfo/bf-cycles</a><br>
<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div><span style="color:rgb(102,102,102)">With best regards, Sergey Sharybin</span></div></div>
</div>