<div dir="ltr">Hi,<div><br></div><div>Those are actually ideas which Mai was looking into for Split kernel as far as i know. They go as following:</div><div><br></div><div>- For a small tile, render multiple samples at a time.</div><div><br></div><div>This will keep compute device busy even for a small tile size. To my knowledge, this is how split kernel now works. This is probably something we need to extend to other kernels?</div><div><br></div><div>This approach is mainly useful for final renders. For a viewport (when we render samples one by one) we need something different.</div><div><br></div><div>- Allow rendering multiple tiles with a single sample on the same device.</div><div><br></div><div>I think Mai also was experimenting with this, not sure what was the conclusion here. But this is something which would help keeping viewport performance at a max.</div><div><br></div><div>Hopefully Mai will drop her knowledge here.</div><div><br></div><div>P.S. There might be some other tricks here, but currently not sure what that would be.</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jul 23, 2017 at 5:03 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">
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<div dir="auto">Hi,
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<p dir="ltr"><font color="#000000">I would like to open question about size of tiles for hybrid system CPU+CUDA/Phi ( CUDA and OpenCL require bigger tile than CPU ). </font></p>
<p dir="ltr"><font color="#000000">Now I use the OpenMP implementation for using bigger tile on hybrid system CPU + Intel Xeon Phi.</font></p>
<p dir="ltr"><font color="#000000">Sergey has the some idea about this.</font></p>
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<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>
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17. listopadu 15/2172 | 708 33 Ostrava-Poruba | Czech Republic<br>
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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>
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<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>
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