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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello equest-users,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Does anyone out there know if the next release of eQuest (based on a new version of DOE 2 I believe) will be able to make use of processor multithreading?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We are running into problems modelling large buildings with eQuest 3.64. Files are taking upwards of 5 minutes to open and once they are open it takes about 8 seconds to modify any single field. If you want to change the flow rate of an AHU you enter your number and then wait for 8 seconds while the software thinks about it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We have done some monitoring and found that the software is running on one processor core at 100% and that is the bottleneck.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Exhibit A: Loading the model<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-CA'><img width=565 height=489 id="Picture_x0020_4" src="cid:image001.png@01CC162D.D7754CF0" alt="Description: cid:image001.png@01CC1628.DD97AE70"></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In this graph (taken while loading the model) you can see that eQUEST’s CPU usage is constant. It is only using one of the available CPU cores and it is using that core to the max. Compare this to the Disk usage and you can see that the Disk usage spikes up several times but those spikes are relatively low.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Exhibit B: Changing values<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-CA'><img width=861 height=544 id="Picture_x0020_3" src="cid:image002.png@01CC162D.D7754CF0" alt="Description: cid:image002.png@01CC1628.DD97AE70"></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-CA'>In this graph you can see the CPU usage spike up when I made a change in eQUEST and then dip down several seconds after. The Disk usage is still sporadic and low.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We have concluded that adding RAM will not speed things up. The best solution is a faster processor.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Has anyone else done any similar benchmarking and want to share their findings?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-CA'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#4D4D4D;mso-fareast-language:EN-CA'>Brian Tysoe </span></b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#4D4D4D;mso-fareast-language:EN-CA'>M.A.Sc., P.Eng., LEED AP </span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-CA'><o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#4D4D4D;mso-fareast-language:EN-CA'>Mechanical Engineer </span></i><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#4D4D4D;mso-fareast-language:EN-CA'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-CA'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-CA'><a href="http://www.mcw.com" title="Click here to visit www.mcw.com"><b><i><span style='color:green;text-decoration:none'>MCW Consultants Ltd. </span></i></b></a><o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#4D4D4D;mso-fareast-language:EN-CA'>600-156 Front Street West <br>Toronto, ON M5J 2L6 <br>Phone 416-598-2920 <br>Fax 416-598-5394 </span></i><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-CA'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-CA'> <o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#4D4D4D;mso-fareast-language:EN-CA'>This e-mail may be privileged and confidential. Any unauthorized use is strictly prohibited. If you received this e-mail in error, please contact the sender directly. </span></i><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#4D4D4D;mso-fareast-language:EN-CA'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>