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Thread Status: Active Total posts in this thread: 6
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Anarki
Cruncher Joined: Jan 25, 2007 Post Count: 34 Status: Offline Project Badges:
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Hi guys, I have the strangest problem when crunching CEP2 on my Linux rig. When the WU's have finished they obviously go to the transfer tab to be uploaded but I'm only getting upload speeds of about 5KB/s when I should see speeds of 120KB/s.
Now here is the weird part, if I suspend WCG the uploads go at 120KB/s. So I'm figuring that with my CPU at 100% load its crapping out my wireless card. Specs are: Ubuntu 10.04 Gigabyte MA785GM-US2H AMD Athlon X2 5000 unlocked to Phenom FX-5000 (quad core) 2.86GHz. 2GB OCZ DDR2 Corsair HX520 PSU D-Link G520 PCI Wi-Fi card Obviously I want to get this rectified as I have to babysit the computer once its done a bunch of WU's and I can't keep doing that ![]() Any ideas? |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
How would WCG rectify conditions on your computer and of all only with CEP2? Yes, WIFI craps out too and on Linux more frequently over here, particularly when the signal is poor... so I figured out ways to improve this which is now on all stations most of the day over 85% of maximum strength (atmospherics and other traffic from cell or bluetooth impact wifi, so latter is defenitely off unless I need to backup phone or harcopy to the BT printer).
----------------------------------------802.11N is btw superior to G, then pick a channel that is not also used by your neighbors and block anything that might by trying to snoop i.e. do not hide, but merely only allow those mac addresses that are yours... then the router plainly ignores the neighbors. The number of times I've updated the WIFI firmware is probably a dozen. The one I chose (D-link-2740B) has quite an active group with excellent support, in my own language which makes it easier. What I suggest is that you start setting the upload bandwidth limit to 64KB for starters and lower it in steps till you find stability. The upload is of lesser importance, but it affects concurrent download speed as many have found out.
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 1 times, last edit by Sekerob at Aug 11, 2010 5:07:10 PM] |
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Jason1478963
Senior Cruncher United States Joined: Sep 18, 2005 Post Count: 295 Status: Offline Project Badges:
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We have found Linux performance to be sluggish when crunching all CEP2 tasks. Now that we have the badge we wanted we have thrown a mix of projects in and this seems to have reduced the poor Linux performance. It seems its just to much crunching all cores on CEP2. My dual core laptop seems OK running all CEP2 and uploading via wireless, but the quad cores and higher seem to have a bit slower response when running all CEP2. They do seem to upload fine via wired LAN. This is just what I noticed on the Linux crunchers we use. We also had one machine that would lock up running all CEP2, but when running a mix of projects it was fine. It also passed Memtest as we thought it may be a memory issue.
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JmBoullier
Former Community Advisor Normandy - France Joined: Jan 26, 2007 Post Count: 3716 Status: Offline Project Badges:
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2 GB for 4 concurrent CEP2 is a bit short sometimes**. And as you certainly know, when a machine starts swapping memory, performance is degrading considerably and pretty fast.
----------------------------------------** I say sometimes because it depends on which of the 16 jobs included in each WU are running at the same time. And, of course, on what you may be doing at the same time. |
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Anarki
Cruncher Joined: Jan 25, 2007 Post Count: 34 Status: Offline Project Badges:
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Thanks for the responses guys, very helpful, what I'm going to do is run a mix of CEP2 and HCC on my Linux computer to see if that helps the issue.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
my wi-fi issues only happen when it drops connection from an unstable signal. then i have to tell the client to try connecting again.
I got around the loss of crunching by queuing up 2 days worth of tasks and checking on that machine once a day. and just doing the reconnect while I'm there if needed. (this is less hassle than what a hardwired land line would cause, in my case ) |
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