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Number crunching :
Performance Tuning
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Send message Joined: 12 Sep 14 Posts: 1069 Credit: 334,882 RAC: 0 |
Please post information of performance and tuning here. |
Send message Joined: 16 Aug 15 Posts: 966 Credit: 1,211,816 RAC: 0 |
Is there ANY way, i could run 3 jobs with 4 cores? The load average running 4 jobs is about 7. That means, that there is much more work per job, than a single core can process. Before the multi-core version, i could do it, now i can only use 1 core per job, which is substantially overloaded and therefore slow. If the aim of game is, to run as fast as possible,this should be implemented. Alternatively, there could be 2 versions. One as is and the other as it was before (through plan classes). |
Send message Joined: 16 Aug 15 Posts: 966 Credit: 1,211,816 RAC: 0 |
Is there ANY way, i could run 3 jobs with 4 cores? The load average running 4 jobs is about 7. That means, that there is much more work per job, than a single core can process. Before the multi-core version, i could do it, now i can only use 1 core per job, which is substantially overloaded and therefore slow. If the aim of game is, to run as fast as possible,this should be implemented. Alternatively, there could be 2 versions. One as is and the other as it was before (through plan classes). EDIT: Theory jobs |
Send message Joined: 12 Sep 14 Posts: 65 Credit: 544 RAC: 0 |
Is there ANY way, i could run 3 jobs with 4 cores? I am currently doing this on my i7 Macbook Pro (4CPUs and 8 threads), just setting the new project preference options to 1 task max and 3 CPUs max. Try it! See my post http://lhcathomedev.cern.ch/vLHCathome-dev/forum_thread.php?id=280&postid=3885#3885 |
Send message Joined: 16 Aug 15 Posts: 966 Credit: 1,211,816 RAC: 0 |
Is there ANY way, i could run 3 jobs with 4 cores? What i mean is have a vm with 3 RUNNING JOBS but 4 CORES assigned! Not a 4 job task. Or alternatively 3 tasks running 1 job each, but USING 4 CORES. This used to be possible, before multi core version with 2 cores per vm, but only one job running in each VM. |
Send message Joined: 19 Aug 15 Posts: 46 Credit: 3,626,553 RAC: 56 |
you can't control the number of jobs inside the VM? |
Send message Joined: 8 Apr 15 Posts: 781 Credit: 12,368,667 RAC: 4,426 |
YOW I was just thinking about how this project was my favorite as far as how I could always depend on it to run without any problems and I could have several here waiting to run and not starting until the last one finished so it never gave other project tasks any problems. THEN I look at this host and keep wondering why all the other Cern tasks said they were waiting to run. Then after a closer look I see vLHC-dev 8core running and only the GPU tasks running with it. And I see I have 7 more of those waiting. I guess that is fine if you have a computer with nothing else to do or you some how got on here and made this your first trip to the land of Boinc. I did see I had one at 40% but I just can't run this version myself. I have been testing these for several months but there I would at least just get 6 of the 8 cores used. I would have to stop running the vLHC and Atlas (or any other CPU task) Break time I guess. Mad Scientist For Life |
Send message Joined: 16 Aug 15 Posts: 966 Credit: 1,211,816 RAC: 0 |
I suggest to update the guest-additions to version 5.0+ inside the image file to better utilize the performance increase with multi-core apps announced by oracle for the 5.0+ versions. |
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