<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV><DIV>On Mar 6, 2006, at 11:58 AM, Greg Couch wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Monaco" size="4" style="font: 14.0px Monaco">Chimera uses a lot of memory, so 2GB is reasonable for 2 cpus -- if you're<SPAN class="Apple-converted-space"> </SPAN></FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Monaco" size="4" style="font: 14.0px Monaco">displaying volume data, you will want more, if your displaying huge</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Monaco" size="4" style="font: 14.0px Monaco">molecules, you'll want more.<SPAN class="Apple-converted-space"> </SPAN>You'll also want more memory if you have</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Monaco" size="4" style="font: 14.0px Monaco">other programs running at the same time.<SPAN class="Apple-converted-space"> </SPAN>Memory is fairly cheap, so get</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Monaco" size="4" style="font: 14.0px Monaco">a lot.</FONT></P> </BLOCKQUOTE><BR></DIV><DIV>Don't mean to scare you off here. While Chimera does use a lot of memory, 512MB is fine for many types of analyses. If you are working on ribosome-size structures, or many (20+) smaller structures -- or large volumetric data sets -- then you would want to increase your memory to 1-2+ GB.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>--Eric</DIV><DIV><BR><DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> Eric Pettersen</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> UCSF Computer Graphics Lab</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> <A href="mailto:pett@cgl.ucsf.edu">pett@cgl.ucsf.edu</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> <A href="http://www.cgl.ucsf.edu">http://www.cgl.ucsf.edu</A></DIV></DIV><BR></DIV><DIV><BR class="khtml-block-placeholder"></DIV></BODY></HTML>