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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: Consideration of recommended CPU usage in the BOINC process (RESOLVED) |
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Thread Status: Active Total posts in this thread: 15
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Richard Mitnick
Veteran Cruncher USA Joined: Feb 28, 2007 Post Count: 583 Status: Offline Project Badges: 
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Not sure where to put this, move it if you so choose.
----------------------------------------Based on my recent experience, I think that there needs to be a reassessment of the recommended CPU usage setting with the various new processors. My understanding has been that the best setting on laptops was CPU usage at 60%, and that was set as a default in BOINC. My understanding was that, the user could run a desktop at CPU usage at 100%. What I found, using the Coretemp software tool, was that in all cases, these settings resulted in my processors running very near to their maximum allowable temperatures. I have in desktops an i7-920, and an i7-3930K. In my laptops, I have an i5-520M, i7-840Q, an i7-2720QM. Nothing is overclocked; all use Intel's "Turbo". I cut back the CPU usage in the desktops to 60% and in the laptops to 50%. The result was that they are all now running about 20degC lower than their maximums. I cannot find any settings in BOINC Manager to affect the GPU's two Nvidia GTX580's, in my newest machine. The temperature gauge for them shows them to be low enough to not be a problem. I would welcome a discussion of this issue. I posted this same entry in the BOINC forums. ---------------------------------------- [Edit 2 times, last edit by mitrichr at Apr 21, 2012 10:51:36 AM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
What cooling are you running on your desktops? My i5@4.2 runs 100% with max temps at 45. Have you cleaned everything recently? You will need to use something like MSI afterburner or I use EVGA Precision to check GPU temps and adjust accordingly.
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Bearcat
Master Cruncher USA Joined: Jan 6, 2007 Post Count: 2803 Status: Offline Project Badges: 
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You would need to reduce the number of threads crunching or move your computers to a cooler room. If you can manually control your fans, bump them up a bit. Another thought is if you purchased your PC, the manufacturers don't do the greatest job applying thermal paste. You could redo it to see if that helps. But as mentioned prior, check for dust bunnies inside. Good luck.
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Crunching for humanity since 2007!
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Richard Mitnick
Veteran Cruncher USA Joined: Feb 28, 2007 Post Count: 583 Status: Offline Project Badges:
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Spot-
----------------------------------------The i7-3930K has a sealed liquid cooling system. The system is from Maingear, their Shift Super-Stock. This system is just 40 days old. The i7-920 is on a Dell, it was vacuumed about three weeks ago. The laptops, not much I can do besides being sure that then fans are running and the opening for them are clean. Reducing the number of threads crunching is sort of antithetical to the idea of buying hyper threaded CPU's. My temperatures now are all fine. I am not posting here so much for my own situation, which with I have dealt; but rather to open this up for discussion if others have found similar issues with the hot new processors. If everybody else is fine, then that's great. |
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Bugg
Senior Cruncher USA Joined: Nov 19, 2006 Post Count: 271 Status: Offline Project Badges: 
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As far as I know on the Intel processors that have the "Turbo" as you called it, that IS overclocking. It's just programmed in the bios as a selectable setting so you don't have to fiddle with anything other than selecting it. It's a preconfigured setting.
----------------------------------------I am using an i5 2500k 3.3GHz, but am using that "turbo" setting at 4.4k, and am only running a Hyper 212+ fan (along with the default fans that came with the case itself), and am well below the maximum allowable temps for my cpu. I hover around mid 60's C usually, on a warm day it can reach 68 or 69C, but that's not even a problem, either. I'm wondering if the cpus you're referring to being so close to max temps have something wrong with them, or if the airflow basically needs to be REALLY looked at, or just get a different (read better) cooler, or even maybe the cooler that's being use might be sufficient, but perhaps not seated/mounted properly.  i5-12600K (3.7GHz), 32GB DDR5, Win11 64bit Home |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have a laptop with an i7-740QM @ 1.73GHz. I reduced the CPU Usage to 25% to feel comfortable with its temps. It doesn't make any difference in temperatures if I run 4 (HT-Off) or 8 (HT-On) jobs in parallel.
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Bugg
Senior Cruncher USA Joined: Nov 19, 2006 Post Count: 271 Status: Offline Project Badges:
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Well if it's a laptop you're using, there's the problem. There's just nowhere near enough space to get the airflow needed to keep temps down at nice levels. It's part of the trade off with using a laptop to do grid computing. Laptops aren't designed for it, they're designed for portability, simple as that. It's like trying to take a family vacation in a lamborghini. They're not designed for it. :P
----------------------------------------i5-12600K (3.7GHz), 32GB DDR5, Win11 64bit Home |
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Richard Mitnick
Veteran Cruncher USA Joined: Feb 28, 2007 Post Count: 583 Status: Offline Project Badges:
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Bugg-
----------------------------------------In my original post, I did point out that three of my machines are laptops. They run just fine as crunchers when CPU usage is set at 50%, so I see no reason to not take advantage of their presence. All told, they represent twenty threads and for CPU crunching, they do quite a lot of work. The laptop with the i7-2720QM does have a useful GPU; I of course do not use it for any project work, due to the obvious heat load. The i7-920 desktop sits in a room where the ambient temperature is at about 63-68 deg F. The new i7-3930K is in a room with four other units, all laptops. The ambient temperature in that room runs between 68-75 degrees F. ---------------------------------------- [Edit 1 times, last edit by mitrichr at Apr 17, 2012 5:20:37 PM] |
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Richard Mitnick
Veteran Cruncher USA Joined: Feb 28, 2007 Post Count: 583 Status: Offline Project Badges:
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I celebrate the work of bono vox. Work done is work done. I especially take note of his consideration of HT or no HT as being of little import temperature wise.
----------------------------------------I started on one little laptop on U.D., the Cancer project at Oxford University. The first big move was to two Core 2 Duo machines. My colleague got a quad desktop. I got an HT quad desktop. Then two HT quad laptops. My colleague got an HT six core. He also ran into some heat issues with his fancy CPU. I got the HT six core with twin GTX 580's to add GPUGrid. I cannot wait to see his next machine. My colleague is all WCG. I run all of WCG plus a lot of other projects using BOINC. It is all work in the name of science. It is all progress for mankind. My favorite story is from HDC, Dr Foran at the Cancer Institute of New Jersey. I don't think I did much on that project, but I have the local newspaper clipping. Tissue typing for Cancer was reduced such that, if run on one PC, what would have taken 137 years would now take one day. The work is the work, one machine or ten, 100% or 25%. Thank you, bono vox, for your contributions. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks mitrichr for your kind words. That laptop, a Sony Vaio, is my newest machine. With 8 threads @ 25% I get ~48 hours/day of run time. I also have an Asus gaming laptop with a Core 2 Duo set at 50% CPU usage for ~24 hours/day of run time. BTW, both laptops have GPUs that I have used for other BOINC projects (Collatz, SETI and Einstein) but I haven't been able to grab a single HCC Beta WU so far, so I have no idea if they're good for WCG.
The Asus has been crunching almost 24/7 since 2009. The Vaio since 2010 but not 24/7. |
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