<div dir="ltr"><div>Dear Julio,</div><div><br></div>* Amount of optimum RAM is a function of your domain size. The more grid points you have, the more RAM you need (without using virtual memory, to avoid slow processing).<div>* Hyperthreading doesn't help in WRF. Even some say it is slightly slower. You can disable it from BIOS. <br></div><div><br></div><div>Best,</div><div>Abdullah.</div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:small"><div dir="ltr">-- <br></div></div><div style="font-size:small"><div>Abdullah Kahraman </div><div>Meteorological Engineer</div><div>Turkish State Meteorological Service </div><div>Istanbul, Turkey </div><div>web: <a href="http://www.meteogreen.com" target="_blank">http://www.meteogreen.com</a> </div><div><a href="http://twitter.com/meteogreen" target="_blank">twitter.com/meteogreen</a> </div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Mon, Dec 5, 2016 at 6:00 PM, Julio Castro <span dir="ltr"><<a href="mailto:jcastro@gac.cl" target="_blank">jcastro@gac.cl</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="ES-CL" link="blue" vlink="purple"><div class="m_-3416625178410195084WordSection1"><p class="MsoNormal">Dear Users,<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><span lang="EN-US">Do you have a rough estimation for the recommended Gb RAM per core for running WRF?<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">I have 24 cores (2 CPUs), 48 threads (using or not using hyper threading is also another question)<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">64 Gb RAM<u></u><u></u></span></p><p class="MsoNormal">Intel(R) Xeon(R) CPU E5-2687W v4 @ 3.00GHz<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><span lang="EN-US">I'm using 48 threads with 6 WRF runs (8 threads per run). My guess is that with 60 % of the threads my machine almost run out of RAM.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">Many thanks<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><table class="m_-3416625178410195084MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" style="border-collapse:collapse"><tbody><tr style="height:11.3pt"><td width="552" colspan="2" valign="top" style="width:414.25pt;padding:0in 5.4pt 0in 5.4pt;height:11.3pt"><p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#0068b3">Julio Castro M.</span></b><u></u><u></u></p><p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#0068b3">Ingeniero Civil, MSc., PhD.</span><span style="color:black"><u></u><u></u></span></p></td></tr><tr style="height:11.3pt"><td width="552" colspan="2" valign="top" style="width:414.25pt;padding:0in 5.4pt 0in 5.4pt;height:11.3pt"><p class="MsoNormal" style="line-height:11.3pt"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#0068b3">Jefe del Área de Modelación y Calidad del Aire</span><span style="font-size:8.0pt;color:black"><u></u><u></u></span></p></td></tr><tr style="height:69.95pt"><td width="213" style="width:159.55pt;padding:0in 5.4pt 0in 5.4pt;height:69.95pt"><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#0068b3"><img width="202" height="75" id="m_-3416625178410195084Imagen_x0020_2" src="cid:image001.png@01D24EEE.AC84C110" alt="cid:83969B68-5B60-49B4-AE8A-CFDE16B1D669"></span><u></u><u></u></p></td><td width="340" style="width:254.7pt;padding:0in 5.4pt 0in 5.4pt;height:69.95pt"><p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#0068b3">Padre Mariano 103, Of. 307<br>Providencia, Santiago<br>Fono: +56 2 27195 610<br>Fax: +56 2 22351 100<br></span><span style="font-size:12.0pt;color:#1f497d"><a href="http://www.gac.cl/" title="blocked::http://www.gac.cl/" target="_blank"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#0068b3">www.gac.cl</span></a></span><span style="color:black"><u></u><u></u></span></p></td></tr></tbody></table><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p></div></div><br>______________________________<wbr>_________________<br>
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