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World Community Grid Forums
Category: Completed Research
Forum: The Clean Energy Project - Phase 2 Forum
Thread: Booting from a flash drive creates problems for CEP? |
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Thread Status: Active Total posts in this thread: 7
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Composer
Cruncher Joined: May 28, 2014 Post Count: 29 Status: Offline Project Badges: 
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I have noticed another anomaly on one of my computers. I am booting linux off of a flash drive on one of my computers that has 8 Gb of Ram and an i5 CPU, however most (but not all, for some reason) CEP WU's that it runs will return a "computation error" before they finish. The strange thing is that if I take an external hard drive with the same linux distro on it and boot off of this hard drive on the same computer as the flash drive, and it attempts to run CPE WU's, it has no problem, and consistantly returns valid results. I have set the flashdrive to run WU's from Ucovering Gnome Mysteries, and it does thoes fine. Just wondering if perhaps resetting the project might fix this, and it is just a coincidence, or if there is something about booting off of a flashdrive that might cause this problem?
----------------------------------------Thanks! EDIT: I just noticed that I forgot to mention that although the computer has 8Gb of ram, I am running a 32bit version of linux mint, so only about 2.9Gb of this is recognized. [Edit 1 times, last edit by Composer at Jan 9, 2015 9:03:44 PM] |
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Jim1348
Veteran Cruncher USA Joined: Jul 13, 2009 Post Count: 1066 Status: Offline Project Badges: 
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CEP2 has a very high write-rate; about 100 GB per work unit per day to the disk drive. Your flash drive probably can't take it. The writes will be to the BOINC data folder, so whatever drive that is on will determine what happens.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Please try running CEP2 with one work unit on the device when you boot with the flash drive. And also, can you provide us with the stderr details
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Composer
Cruncher Joined: May 28, 2014 Post Count: 29 Status: Offline Project Badges:
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I have 5 that returned errors still under the results status page.
1) Result Log Result Name: E227583_ 971_ S.282.C27F10H9N3.VUQACIVJPIUVEV-UHFFFAOYSA-N.5_ s1_ 14_ 2-- <core_client_version>7.0.27</core_client_version> <![CDATA[ <message> process got signal 11 </message> <stderr_txt> INFO: No state to restore. Start from the beginning. </stderr_txt> ]]> 2) Result Log Result Name: E227584_ 824_ S.282.C33H19N7O2.MDTOFWUVIQPWKI-UHFFFAOYSA-N.18_ s1_ 14_ 0-- <core_client_version>7.0.27</core_client_version> <![CDATA[ <message> process got signal 11 </message> <stderr_txt> INFO: No state to restore. Start from the beginning. [06:35:32] Number of jobs = 8 [06:35:32] Starting job 0,CPU time has been restored to 0.000000. [06:35:32] Starting new Job [06:35:42] Qink name = fldman [06:35:51] Qink name = gesman [06:35:57] Qink name = scfman [07:12:45] Qink name = anlman [07:12:45] Qink name = drvman [07:14:28] Qink name = optman [07:14:29] Qink name = fldman [07:14:29] Qink name = gesman [07:14:30] Qink name = scfman [07:25:40] Qink name = anlman [07:25:40] Qink name = drvman [07:27:22] Qink name = optman [07:27:22] Qink name = fldman [07:27:22] Qink name = gesman [07:27:24] Qink name = scfman [07:38:23] Qink name = anlman [07:38:23] Qink name = drvman [07:40:03] Qink name = optman [07:40:03] Qink name = fldman [07:40:03] Qink name = gesman [07:40:05] Qink name = scfman </stderr_txt> ]]> 3) Result Log Result Name: E227544_ 519_ S.272.C28H12N4S4.KJBVFSQCNPZDBY-UHFFFAOYSA-N.2_ s1_ 14_ 1-- <core_client_version>7.0.27</core_client_version> <![CDATA[ <message> process got signal 11 </message> <stderr_txt> INFO: No state to restore. Start from the beginning. </stderr_txt> ]]> 4) Result Log Result Name: E227412_ 841_ S.248.C32H19N3O2.BMXLDSGBJOELDU-UHFFFAOYSA-N.11_ s1_ 14_ 2-- <core_client_version>7.0.27</core_client_version> <![CDATA[ <message> process got signal 11 </message> <stderr_txt> INFO: No state to restore. Start from the beginning. [08:38:25] Number of jobs = 8 [08:38:25] Starting job 0,CPU time has been restored to 0.000000. [08:38:25] Starting new Job [08:38:33] Qink name = fldman [08:38:53] Qink name = gesman [08:38:58] Qink name = scfman </stderr_txt> ]]> 5) Result Log Result Name: E227400_ 154_ S.246.C25H19N11.JRMZDZLDFUYWGX-UHFFFAOYSA-N.9_ s1_ 14_ 0-- <core_client_version>7.0.27</core_client_version> <![CDATA[ <message> process got signal 11 </message> <stderr_txt> INFO: No state to restore. Start from the beginning. </stderr_txt> ]]> I wasnt sure if we are supposed to just copy and paste the way I did, or if there is some way to attach the file seperatly. |
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Composer
Cruncher Joined: May 28, 2014 Post Count: 29 Status: Offline Project Badges:
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If that is what is causing the problem, is it possible that I might fix it by moving that folder to the computers internal HDD? If so, would I have to change something in the config file or would BOINC be able to find it on its own?
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7231 Status: Offline Project Badges: 
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process got signal 11 He is correct. Process 11 means your system was too busy, probably with the writes to the flashdrive, it could not keep up. Try running fewer CEP2 along with something else. Cheers
Sgt. Joe
*Minnesota Crunchers* |
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Composer
Cruncher Joined: May 28, 2014 Post Count: 29 Status: Offline Project Badges:
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OHHH! I was wondering what that means... It feels like the whole world makes sense again! Thanks
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