 | | | Setting XSI cpu Priority | Setting XSI cpu Priority 2004-02-25 - By Luc-Eric Rousseau
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seems like a hot new topic.
I would suggest limiting XSI to use the number of physical CPUs you have. This
way, the virtual CPU swill be used to give you more responsive UI, which is
what hyperthreading is meant for.
So let's say you have a dual Xeon with Hyperthreading on. You have two 'real'
CPU, although the task manager in XP will show you 4. Two of them are virtual
and not full CPUs.
Try starting like this
xsi.bat -thread 2
if you have a single CPU it would be xsi.bat -thread 1
The gain you will get from using all 4 'virtual' CPU is very minimal, and can
actually be a lost of performance in some cases (I'm told it slows down hair
for example), so don't feel bad about this. Think about the virtual CPU as a
way to get a more responsive PC in general as oposed to another CPU.
I think it's a very good idea to enable hyperthreading, but limiting XSI and
mental ray to using only the physical CPUs.
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)]On Behalf Of
James Dc
Posted At: Wednesday, February 25, 2004 12:04 AM
Posted To: xsi
Conversation: Setting XSI cpu Priority
Subject: Setting XSI cpu Priority
Howdy all, is there a way to set a programs cpu priority when you start it? (so
XSI automatcily starts in 'Below Normal') my machine is almost unusuable (dual
3ghz xeon, HT on) when rendering, even a region. when I have it set to Normal.
when I remember I set it manually...but its a pain when I forget :(
Specs -
Dual 3ghz Xeon, HT enabled
2gb Ram
WinXP Pro sp1.
cheers
James,
James De Colling
XSI / Shake
Fuse @ Mrppp
Ph: +61 3 9690 4044
Mb: +61 411 334 470
james@(protected)
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<DIV><SPAN class=262162516-25022004><FONT face=Arial size=2>seems like a hot
new
topic.</FONT></SPAN></DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial size=2>I would suggest
limiting XSI to use the number of physical CPUs you have. This way, the
virtual CPU swill be used to give you more responsive UI, which is what
hyperthreading is meant for.</FONT></SPAN></DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial size=2>So let's say you
have a dual Xeon with Hyperthreading on. You have two 'real' CPU,
although
the task manager in XP will show you 4. Two of them are virtual and not
full CPUs.</FONT></SPAN></DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial size=2>Try starting like
this </FONT></SPAN></DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial size=2> xsi
.bat
-thread 2</FONT></SPAN></DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial size=2>if you have a
single
CPU it would be xsi.bat -thread 1</FONT></SPAN></DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial size=2>The gain you will
get from using all 4 'virtual' CPU is very minimal, and can actually be a lost
of performance in some cases (I'm told it slows down hair for example), so don
't
feel bad about this. Think about the virtual CPU as a way to get a more
responsive PC in general as oposed to another CPU.</FONT></SPAN></DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial size=2>I think it's a very
good idea to enable hyperthreading, but limiting XSI and mental ray to using
only the physical CPUs.</FONT></SPAN></DIV>
<DIV><SPAN class=262162516-25022004><FONT face=Arial color=#800080
size=2></FONT></SPAN> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-- --Original Message-- --<BR><B>From:</B> owner-xsi@(protected)
[mailto:owner-xsi@(protected)]<B>On Behalf Of </B>James Dc<BR><B>Posted
At:</B> Wednesday, February 25, 2004 12:04 AM<BR><B>Posted To:</B>
xsi<BR><B>Conversation:</B> Setting XSI cpu Priority<BR><B>Subject:</B>
Setting XSI cpu Priority<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Howdy all, is there a way to set a programs cpu
priority when you start it? (so XSI automatcily starts in 'Below Normal') my
machine is almost unusuable (dual 3ghz xeon, HT on) when rendering, even a
region. when I have it set to Normal.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>when I remember I set it manually...but its a
pain when I forget :(</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Specs -</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Dual 3ghz Xeon, HT enabled</FONT></DIV>
<DIV><FONT face=Arial size=2>2gb Ram</FONT></DIV>
<DIV><FONT face=Arial size=2>WinXP Pro sp1.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>cheers</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>James,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>
<DIV>
<DIV align=center><FONT face=Arial color=#555555 size=2>James De
Colling</FONT></DIV>
<DIV align=center><FONT face=Arial color=#555555 size=2>XSI /
Shake</FONT></DIV>
<DIV align=center><FONT face=Arial color=#772929 size=2>Fuse @
Mrppp</FONT></DIV>
<DIV align=center><FONT face=Arial color=#555555 size=2>Ph: +61 3 9690
4044</FONT></DIV>
<DIV align=center><FONT face=Arial color=#555555 size=2>Mb: +61 411 334
470</FONT><FONT face=Arial size=2></DIV></FONT>
<DIV align=center><FONT face=Arial color=#5d758b size=2><A
href="mailto:james@(protected)">james@(protected)</A></FONT></DIV></DIV>
<DIV><FONT face=Arial
size=2></FONT> </DIV></DIV></BLOCKQUOTE></BODY></HTML>
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