<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hello Benjun,<div><br></div><div>One word of warning about using CitcomS on Ranger. We used CitcomCU on Lonestar and found that when we tried to use it on</div><div>Ranger that our models actually ran slower. We attributed this to the fact the Ranger is designed with many cores per node, but</div><div>only gigabit ethernet between the nodes and not enough sockets per node to allow for efficient exchange of information between nodes.</div><div>Lonestar didn't have this problem because it was only 2 cores per node, so it could handle exchanging the information between compute</div><div>nodes. The model we tested this for was running on about 380 cpus (cores) with about 50 million mesh nodes. </div><div><br></div><div>I don't know how big your models are but you might need to do some testing when you get things running to see what will run</div><div>efficiently on Ranger.</div><div><br></div><div>If anyone else on the list has experience with this, it would be great to hear what other advice their is for running on Ranger</div><div>(perhaps there's a compiling optimization that alleviates this problem???).</div><div><br></div><div>-Magali</div><div><br></div><div><div>On Jan 19, 2011, at 12:01 PM, Benjun Wu wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <div id="MailContainerBody" style="PADDING-RIGHT: 10px; PADDING-LEFT: 10px; PADDING-TOP: 15px" leftmargin="0" topmargin="0" canvastabstop="true" name="Compose message area"> <div><font face="宋体" size="2">Hi,</font></div> <div><font face="宋体" size="2"></font> </div> <div><font face="宋体" size="2">I want to use CitcomS on Teragrid. Now I have an accound on Ranger at TACC. CitcomS was installed on <font face="Times New Roman" size="3">Lonestar. But Lonestar is upgrading to Lonestar4. </font> <font face="Times New Roman" size="3">Does </font><font face="Times New Roman" size="3">CIG group plan to install CitcomS on Lonestar4 or Ranger? Thank you very much!</font><font face="Times New Roman" size="3"> </font></font></div> <div><font face="宋体" size="2"></font> </div> <div><font face="宋体" size="2">Best Wishes,</font></div> <div> </div> <div><font face="宋体" size="2">Benjun Wu<br>Earth & Planetary Sciences<br>Johns Hopkins University<br>Baltimore,21218</font></div></div> _______________________________________________<br>CIG-MC mailing list<br><a href="mailto:CIG-MC@geodynamics.org">CIG-MC@geodynamics.org</a><br>http://geodynamics.org/cgi-bin/mailman/listinfo/cig-mc<br></blockquote></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><div><div><div><div><div><div>-----------------------------------------</div><div>Associate Professor & Chancellor Fellow, U.C. Davis </div><div>Department of Geology & KeckCAVES</div><div>2129 Earth & Physical Sciences Bldg</div><div>Davis, CA 95616</div><div><br></div><div><a href="mailto:mibillen@ucdavis.edu">mibillen@ucdavis.edu</a></div><div>(530) 754-5696</div><div>------------------------------------</div></div></div></div></div></div><br></div></div></div></span></div></span></div></span></div></span></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"> </div><br></body></html>