PLease explain the legend in BOINCManager/Tasks

Message boards : Number crunching : PLease explain the legend in BOINCManager/Tasks

Author	Message
Richard Mitnick Send message Joined: 8 Feb 12 Posts: 60 Credit: 17,816,440 RAC: 0 Level Scientific publications	Message 24560 - Posted: 23 Apr 2012 \| 18:45:58 UTC
	Please explain the meaning of "Waiting to run (0.51 CPUs + 1.00 NVIDIA GPUs) as it relates to CPU usage. Thanks. ____________ Please check out my blog http://sciencesprings.wordpress.com http://facebook.com/sciencesprings
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5pot Send message Joined: 8 Mar 12 Posts: 411 Credit: 2,083,882,218 RAC: 0 Level Scientific publications	Message 24561 - Posted: 23 Apr 2012 \| 19:00:35 UTC Last modified: 23 Apr 2012 \| 19:12:46 UTC
	It means the app will use roughly half of a core plus one NVIDIA gpu. Normally, if an app tells me that it will use anything above .4-.5 CPU (core %), I tell boinc to only use 75% of my CPU (on a non-HT quad-core) thereby allowing more resources to be used for the total of 4 apps (3WCG + 1 GPUgrid). With Einstein, for me, they only use .2CPU+1GPU, so I let 5 apps run (100% of CPU cores in boinc), since the .2 (20%) of one core's resources does not slow things down as much. When you reach around 50% of a core, it's usually better off to start telling BOINC to use less cores so more CPU (all cores together) resources are available. Hope I made sense.
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dskagcommunity Send message Joined: 28 Apr 11 Posts: 456 Credit: 817,865,789 RAC: 0 Level Scientific publications	Message 24562 - Posted: 23 Apr 2012 \| 19:12:02 UTC
	Yes depending on the project it is ether a recomend to hold that core value free or a must to get the full speed. Opencl apps need it barely free. Gpugrid runs with a potent cpu parallel to full cpu core activity @ full speed too. The best is to try out with a tool like gpuz to look @ gpu load. ____________ DSKAG Austria Research Team: http://www.research.dskag.at
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Richard Mitnick Send message Joined: 8 Feb 12 Posts: 60 Credit: 17,816,440 RAC: 0 Level Scientific publications	Message 24564 - Posted: 23 Apr 2012 \| 19:34:49 UTC - in response to Message 24561.
	Thanks for the help. This machine is an i7-3930K hyper threaded 6 core machine. I have set BOINC to use 10 threads for CPU crunching and leave two threads free. This was actually done more for heat than anything else; but with the explanation you have given me, it sounds like I am in the right place. Any further that you might say will certainly be appreciated. ____________ Please check out my blog http://sciencesprings.wordpress.com http://facebook.com/sciencesprings
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skgiven Volunteer moderator Volunteer tester Send message Joined: 23 Apr 09 Posts: 3968 Credit: 1,995,359,260 RAC: 0 Level Scientific publications	Message 24566 - Posted: 23 Apr 2012 \| 21:23:02 UTC - in response to Message 24564.
	mitrichr, read some of the FAQ's, for tips - especially the FAQ - Best configurations for GPUGRID Leaving 2 cores free on that system is spot on, but if temps are still a problem get better cooling. Are you using fan controlling software? You should be. If not try MSI Afterburner or one of the other similar products. ____________ FAQ's HOW TO: - Opt out of Beta Tests - Ask for Help
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Richard Mitnick Send message Joined: 8 Feb 12 Posts: 60 Credit: 17,816,440 RAC: 0 Level Scientific publications	Message 24567 - Posted: 23 Apr 2012 \| 21:51:51 UTC - in response to Message 24566.
	skgiven- Hey, how are you. No, temps are no longer a problem. The cooling is sufficient, the problem was the operator. I corrected some really stupid things, all is right with the world. This machine is a MainGear Shift SuperStock. The whole case is designed to relieve heat with the CPU on a sealed liquid cooling system, and the same with the twin GTX580 cards. The interior, the guts, are turned 90 degrees, so that all heat will flow up through generous grills. All of the cabling is thus on the top, if that gives a better picture. But, this genius planted the machine under a desk, with only about three inches of top clearance, so the heat had no where to go. That has been corrected. I could not move the machine, but I could move the desk about 16" to the side, the the whole machine is now out in the open. Thanks for your comments and advice. I think that heat with the new and powerful CPU's is an issue for BOINC, I have raised it at BOINC and at WCG. I got some really good advice and some not so good advice. ____________ Please check out my blog http://sciencesprings.wordpress.com http://facebook.com/sciencesprings
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skgiven Volunteer moderator Volunteer tester Send message Joined: 23 Apr 09 Posts: 3968 Credit: 1,995,359,260 RAC: 0 Level Scientific publications	Message 24568 - Posted: 23 Apr 2012 \| 22:51:02 UTC - in response to Message 24567.
	I'm well, thanks. Boinc was originally developed for single core CPU's, so 12thread multi-GPU systems are a long way from base. There have been massive improvements, and hopefully this will continue, but the goal posts keep moving, and anticipation is a guessing game. You have an excellent system, especially for GPUGrid. Good to hear you shifted the cooling issue. Confined space is a common, but rarely mentioned issue; everyone talks about air-flow inside the case, but neglects to mention airflow outside the case. The ambient room temperature might be 20degC but if your case is stuck in a corner/cupboard/desk, the air around the case might be more like 30 or 40degC. Interestingly, the advice given in this forum is generally very good, probably >>90% of the advice is good sound advice. On some other forums it's probably a lot closer to 50%. Here, this is down to researcher participation in the forums, the level of moderator advice and the quality of advice from many more experienced crunchers. GPUGrid is inherently a project where the more knowledgeable crunchers do well, and total newbies flounder, so it's very much worthwhile listening to the advice offered. Don't be scared to ask questions; nobody knows everything, and somebody probably has the answer you are looking for. Don't be scared to answer either; there is a good chance you will be of some help, and if you are wrong, there is a very good chance somebody will point out the mistakes. Just keep it sweet, we are all in this together, and there are no winners, just participants! ____________ FAQ's HOW TO: - Opt out of Beta Tests - Ask for Help
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Richard Mitnick Send message Joined: 8 Feb 12 Posts: 60 Credit: 17,816,440 RAC: 0 Level Scientific publications	Message 24573 - Posted: 24 Apr 2012 \| 1:33:02 UTC - in response to Message 24568.
	Boinc was originally developed for single core CPU's, so 12thread multi-GPU systems are a long way from base. There have been massive improvements, and hopefully this will continue, but the goal posts keep moving, and anticipation is a guessing game. Don't be scared to ask questions; nobody knows everything, and somebody probably has the answer you are looking for. Don't be scared to answer either; there is a good chance you will be of some help, and if you are wrong, there is a very good chance somebody will point out the mistakes. Just keep it sweet, we are all in this together, and there are no winners, just participants! Thanks for a great appraisal of the situation with advanced processors. In the BOINC forum, nanoprobe said very succinctly, don't run your i7-920 full out if it has standard a standard heatsink. Your remarks and his are the only two replies which specifically recognize the problem. I am never afraid of bringing up a topic for discussion. In I/T, I am essentially a no-nothing. So, hey, why not? My thinking is always most of us in the BOINC world are no-nothings. So, If I have a problem, probably other have it too. Get it out and get it discussed. My i7-920 was one of the first machines where "Connect every" and "Additional work buffer defaults were meaningless. It took six weeks and a great deal of help at BOINC and at WCG to get it to not run out of work. So, this was a monster discussion and I believe a lot was taken away from it by many people. I can actually sometimes contribute and I am careful to keep within my limits. My area of extra interests runs to P.R., for the projects, through my blog and approaches to journalist to get BOINC and WCG some good space. Thanks again. ____________ Please check out my blog http://sciencesprings.wordpress.com http://facebook.com/sciencesprings
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skgiven Volunteer moderator Volunteer tester Send message Joined: 23 Apr 09 Posts: 3968 Credit: 1,995,359,260 RAC: 0 Level Scientific publications	Message 24576 - Posted: 24 Apr 2012 \| 11:12:27 UTC - in response to Message 24573. Last modified: 24 Apr 2012 \| 11:13:18 UTC
	You are right about Intel's heatsinks; crunching with a default heatsink on high end CPU's is asking for trouble. Loud, hot and prone to system crashes. The Sandy Bridge heatsink and fan that came with my CPU was a joke, <2cm thick. For a while I had no choice but to use it, so I had to undervolt, turn turbo off and leave the case open and only use 5 or 6 of the 8 threads. In the end I used a small metal file to make a skt775 heatsink fit. Well, rather that than spend £35+p&p on yet another heatsink. My old i7-920 and LGA1156 i7 were also hot and loud on Intel's default heatsinks. When I built a few AMD llano systems (3cores+GPU) recently I found the tiny heatsink was up to the job, even when crunching on the GPU & CPU cores, but these heatsinks are designed for such APU's. Intel seems to think that one heatsink is good enough for it's entire range - dual cores right up to 12thread processors. For GPU's there is a different issue; the default speeds of the fans are typically insufficient to cool reference GPU's. Unless you want to run them at 90degC. So it's really important to use fan controlling software on reference designs. Non-reference designs avoid or reduce these problems by using better fan speed profiles, dual or triple fans and better heatsinks. Water cooled GPU's don't have such issues. ____________ FAQ's HOW TO: - Opt out of Beta Tests - Ask for Help
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Message boards : Number crunching : PLease explain the legend in BOINCManager/Tasks

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