Index  | Recent Threads  | Unanswered Threads  | Who's Active  | Guidelines  | Search
 

Quick Go »
No member browsing this thread
Thread Status: Active
Total posts in this thread: 6
[ Jump to Last Post ]
Post new Thread
Author
Previous Thread This topic has been viewed 4246 times and has 5 replies Next Thread
Anarki
Cruncher
Joined: Jan 25, 2007
Post Count: 34
Status: Offline
Project Badges:
Reply to this Post  Reply with Quote 
Wi-fi problem when crunching CEP2

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 sad

Any ideas?
[Aug 11, 2010 3:25:28 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
Ace Cruncher
Joined: Jul 24, 2005
Post Count: 20043
Status: Offline
Reply to this Post  Reply with Quote 
Re: Wi-fi problem when crunching CEP2

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 Global & Research > Make Proposal Help: Start Here!
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]
[Aug 11, 2010 5:05:33 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Jason1478963
Senior Cruncher
United States
Joined: Sep 18, 2005
Post Count: 295
Status: Offline
Project Badges:
Reply to this Post  Reply with Quote 
Re: Wi-fi problem when crunching CEP2

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.
----------------------------------------

[Aug 11, 2010 6:20:27 PM]   Link   Report threatening or abusive post: please login first  Go to top 
JmBoullier
Former Community Advisor
Normandy - France
Joined: Jan 26, 2007
Post Count: 3716
Status: Offline
Project Badges:
Reply to this Post  Reply with Quote 
Re: Wi-fi problem when crunching CEP2

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.
----------------------------------------
Team--> Decrypthon -->Statistics/Join -->Thread
[Aug 11, 2010 7:50:12 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Anarki
Cruncher
Joined: Jan 25, 2007
Post Count: 34
Status: Offline
Project Badges:
Reply to this Post  Reply with Quote 
Re: Wi-fi problem when crunching CEP2

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.
[Aug 11, 2010 10:25:49 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
Cruncher
Joined: May 22, 2018
Post Count: 0
Status: Offline
Reply to this Post  Reply with Quote 
Re: Wi-fi problem when crunching CEP2

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 )
[Aug 11, 2010 10:43:26 PM]   Link   Report threatening or abusive post: please login first  Go to top 
[ Jump to Last Post ]
Post new Thread