<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><br><div>Begin forwarded message:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>From: </b></span><span style="font-family:'Helvetica'; font-size:medium;">Sandy Philpott <<a href="mailto:Sandy.Philpott@jlab.org">Sandy.Philpott@jlab.org</a>><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>Date: </b></span><span style="font-family:'Helvetica'; font-size:medium;">June 25, 2010 9:32:41 AM EDT<br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>To: </b></span><span style="font-family:'Helvetica'; font-size:medium;"><a href="mailto:jlab-scicomp-briefs@jlab.org">jlab-scicomp-briefs@jlab.org</a><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>Cc: </b></span><span style="font-family:'Helvetica'; font-size:medium;">"<a href="mailto:scicomp@jlab.org">scicomp@jlab.org</a>" <<a href="mailto:scicomp@jlab.org">scicomp@jlab.org</a>><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>Subject: </b></span><span style="font-family:'Helvetica'; font-size:medium;"><b>[Jlab-scicomp-briefs] JLab Analysis Cluster: CentOS 5.3 64-bit upgrade; 32-bit Fedora EOL</b><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>Reply-To: </b></span><span style="font-family:'Helvetica'; font-size:medium;"><a href="mailto:Sandy.Philpott@jlab.org">Sandy.Philpott@jlab.org</a><br></span></div><br><div>The JLab analysis cluster is upgrading entirely to CentOS 5.3 64-bit<br>computing by the end of 2010; all 32-bit Fedora systems are at end-of-<br>life and will be completely decommissioned in the coming months. Newer <br>nodes have a total of 5 times the capacity of the old: the new<br>processors are twice as fast, and run 12 jobs instead of 5 like most of <br>the 32-bit nodes. The nodes are also more energy efficient.<br><br>Interactive user systems, available via the 'ifarml64' alias, include<br>ifarml6 and ifarml1. 64-bit batch nodes include 50 Nehalem systems with <br>24GB RAM and 8 cores with hyperthreading on, plus a small number of AMD <br>8-core systems with 8GB RAM.<br><br>Use the OS: linux64 tag to access these nodes. 32-bit codes may be run <br>on the 64-bit systems by setting LD_LIBRARY_PATH appropriately.<br><br>Additionally, multi-threaded jobs are now supported, using the tag CPU:<br>x, where x is the number of cores requested. These jobs will likely<br>need to increase their memory request over the default setting, using<br>the MEMORY: xxx tag.<br><br>The first group of farm nodes scheduled for removal will be by the end<br>of FY10 in September. An FY11 purchase of compute nodes is anticipated<br>in the fall before the final nodes are removed. These nodes will have <br>another 2 times in throughput, thus ~10 times better throughput than <br>most of the 32-bit nodes.<br><br>Currently there are almost 700 job slots in the 64-bit queue, with less <br>than 500 in the 32-bit queue. Cluster usage graphs are available at<br><a href="http://scicomp.jlab.org/farm/stat/job.faces">http://scicomp.jlab.org/farm/stat/job.faces</a> .<br><br><br>_______________________________________________<br>Jlab-scicomp-briefs mailing list<br><a href="mailto:Jlab-scicomp-briefs@jlab.org">Jlab-scicomp-briefs@jlab.org</a><br>https://mailman.jlab.org/mailman/listinfo/jlab-scicomp-briefs<br></div></blockquote></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>--</div><div>Dennis Weygand</div><div><a href="mailto:weygand@jlab.org">weygand@jlab.org</a></div><div>(757) 269-5926</div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span>
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