| Index | Recent Threads | Unanswered Threads | Who's Active | Guidelines | Search |
 |
World Community Grid Forums
Category: Completed Research
Forum: The Clean Energy Project - Phase 2 Forum
Thread: 3 out of 5 CEP2 fail on my Mac |
| No member browsing this thread |
|
Thread Status: Active Total posts in this thread: 15
|
|
| Author |
|
|
Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Here's another answer to your question (max_concurrent).
----------------------------------------[Edit 1 times, last edit by Former Member at Jan 2, 2016 1:29:49 PM] |
||
|
|
ca05065
Senior Cruncher Joined: Dec 4, 2007 Post Count: 325 Status: Offline Project Badges: 
|
Here is an example of an app_config.xml which is stored in c:\program_data\boinc\projects\www.worldcommunitygrid.org
<app_config> <app> <name>cep2</name> <max_concurrent>2</max_concurrent> </app> </app_config> |
||
|
|
[AF>Le_Pommier] Jerome_C2005
Cruncher Joined: Aug 17, 2006 Post Count: 22 Status: Offline Project Badges: 
|
Great answers thanks a lot, I think the specific parameter (that I ignored) is perfect, I understand that the app_config is a more direct answer to my question but I think that the parameter is more than enough to effectively reduce the risk for that failure, it was set to 8 and I changed it to 2.
----------------------------------------Thanks a lot for your answers and time. |
||
|
|
littlepeaks
Veteran Cruncher USA Joined: Apr 28, 2007 Post Count: 748 Status: Offline Project Badges: 
|
FWIW, I'm running two concurrent CEP2 WUs on my Windows 7 PC. I had a situation the other day, when they both started up within 15 seconds of each other (out of the luck of the draw). They were both hammering the hard drive at the same time during the first few minutes of the run, and my PC wasn't too happy about this. They both got validated, but got some "No heartbeats" when the WUs started.
 |
||
|
|
Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Unfortunately this is a downside in contributing fo CEP2 and is well known among the crunchers. A way to exploit this situation is using RAM as HDD (e.g. mounting the BOINC data folder on RAM in Linux or mounting a RAM partition in Windows with SoftPerfect RAM Disk) but a lot of RAM is required. You can find some advices and information in the most recent topics of this forum. Otherwise there's a more difficult and less effective way consisting in the use of some parameters in app_config.xml file (or something similar, I'm not sure since I don't use it, sorry). But most of the crunchers decide to run only 1 WU at a time for this project to avoid the issue.
|
||
|
|
|