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World Community Grid Forums
Category: Active Research
Forum: Mapping Cancer Markers Forum
Thread: Mapping Cancer causes basic machine lockup on multi-processor system |
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Thread Status: Active Total posts in this thread: 7
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gasteed
Cruncher Joined: Mar 31, 2009 Post Count: 2 Status: Offline Project Badges: 
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Hi,
I've been a WCG since 3/09 and have run it on a variety of machines. My current machine is a 6 core amd 1075t. My issue is that when the mapping cancer runs it basically takes over my HDD virtual memory and my pc becomes a brick. No other wcg project has caused this issue. Running win7 home premium 64 bit. Question is, I'd like to run the mapping cancer (dear friend surviving Leukemia) but I still need to use my machine. Is there a way to have it run only one instance as to the 5 (which is when my pc became a brick) instances? It's a six core and I let it run 100% cpu usage 24/7 with no issues. But if the mapping kicks in with more than one running at a time my pc becomes useless, lol. TIA Gordon... |
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sgoll
Advanced Cruncher Joined: Oct 24, 2006 Post Count: 87 Status: Offline Project Badges: 
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In the boinc manager window you can go to:
-----------------------------------------> Tools -> Computing preferences -> processor usage -> On multiprocessor systems ... There you can define how many cpu cores you will spent for boinc. For 3 of 6 cores you should select 50%. You can play around with this values to find a comfortable setting. Stephan  |
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges: 
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Gordon,
----------------------------------------How much memory do you have in that machine? If you go to tools>Boinc preferences>Disk and memory usage: what percentage of memory is showing? What percentage of the swap file too?  |
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ccandido
Senior Cruncher Joined: Jun 22, 2011 Post Count: 182 Status: Offline Project Badges: 
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If you write an app_config.xml and put it in the boincdata folder of the wcg project you can run one wu of the Mapping Cancer project and as many wu of any other project.
----------------------------------------for instance, i have this to limit to one the number of lattice wu <app_config> <app> <name>garli</name> <max_concurrent>1</max_concurrent> </app> </app_config> what you need to do is to replace the name of the aplication which you can find in your client_state.xml. When you open that file (with note pad) be extremely careful not to change anything.   |
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gasteed
Cruncher Joined: Mar 31, 2009 Post Count: 2 Status: Offline Project Badges:
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Thanks ccandido, That's exactly what I was looking for as I wanted to continue to allow all 6 processors to crunch wu, just not multiple mappings. I will give this a try, and give status if I can make it work....
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges:
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I can't help feeling something else needs adjusting, I run a rig with half a GB ram per core, less what OS uses, with no issues on MCM1
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Once one gets past the point of what the OS uses, 0.5GB per MCM would easily handle 6 [probably 2GB for 6 cores could even do things, since the big search models are more of a rarity] My quad, MCM only, lists 7.26 versions since launch in range of peak RAM of 10 to 64MB, and VM from 15 to 103MB. Even if all 4 peaked simultaneous with these figures, it's possible to run 4 in 1GB allocated RAM.
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