Performance problem on multi-core system with multithreaded applicationsHello all,<br/>   I have two different multi-threaded applications that when run _alone_ on 16-core Intel Xeon box with Linux, take 4 hours(app1) and 10 hours(app2) respectively. With MPI, I specify 8 threads for each of the application and fire them simultaneously.<br/> Now, when app1 gets completed, app2 runs with its 8 threads. I am wondering if it is possible to create more threads dynamically when you have resources lying idle? Here app2 just doesn't use remaining 8 cores, right?<br/> <br/> Please let me know if I am assuming something wrong.<br/> <br/> Thanks,<br/> Blue© 2009 Microsoft Corporation. All rights reserved.Thu, 28 May 2009 22:12:57 Z73eb4867-5967-4fb8-8bbb-1de9963113bfhttp://social.microsoft.com/Forums/en-US/windowshpcmpi/thread/73eb4867-5967-4fb8-8bbb-1de9963113bf#73eb4867-5967-4fb8-8bbb-1de9963113bfhttp://social.microsoft.com/Forums/en-US/windowshpcmpi/thread/73eb4867-5967-4fb8-8bbb-1de9963113bf#73eb4867-5967-4fb8-8bbb-1de9963113bfBluehivehttp://social.microsoft.com/Profile/en-US/?user=BluehivePerformance problem on multi-core system with multithreaded applicationsHello all,<br/>   I have two different multi-threaded applications that when run _alone_ on 16-core Intel Xeon box with Linux, take 4 hours(app1) and 10 hours(app2) respectively. With MPI, I specify 8 threads for each of the application and fire them simultaneously.<br/> Now, when app1 gets completed, app2 runs with its 8 threads. I am wondering if it is possible to create more threads dynamically when you have resources lying idle? Here app2 just doesn't use remaining 8 cores, right?<br/> <br/> Please let me know if I am assuming something wrong.<br/> <br/> Thanks,<br/> BlueThu, 28 May 2009 06:59:40 Z2009-05-28T06:59:40Zhttp://social.microsoft.com/Forums/en-US/windowshpcmpi/thread/73eb4867-5967-4fb8-8bbb-1de9963113bf#d7197f45-11a9-49b0-b41e-360735ff119chttp://social.microsoft.com/Forums/en-US/windowshpcmpi/thread/73eb4867-5967-4fb8-8bbb-1de9963113bf#d7197f45-11a9-49b0-b41e-360735ff119cLiohttp://social.microsoft.com/Profile/en-US/?user=LioPerformance problem on multi-core system with multithreaded applicationsThis forum is designated for Windows HPC Server and MSMPI. is your program using either one?<br/><br/>thanks,<br/>.Erez<br/>Thu, 28 May 2009 22:12:57 Z2009-05-28T22:12:57Z