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World Community Grid Forums
Category: Completed Research
Forum: Microbiome Immunity Project
Thread: Signal 11 on linux machine |
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Thread Status: Active Total posts in this thread: 20
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rbm73
Cruncher USA Joined: Apr 1, 2011 Post Count: 28 Status: Offline Project Badges: 
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BOINC install was from synaptic package manager, and by default the client starts automatically, and doesn't log anything to disk. This laptop is so "small" that I don't run any x-windows task manager, just boinctui. I suppose the initial part of those startup messages is what you want to see... I'll have to see if I can capture them.
If not, would the dmesg log from startup be as useful to you? |
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adriverhoef
Master Cruncher The Netherlands Joined: Apr 3, 2009 Post Count: 2346 Status: Offline Project Badges: 
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Did you check something like /var/log/boinc.log ?
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rbm73
Cruncher USA Joined: Apr 1, 2011 Post Count: 28 Status: Offline Project Badges:
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That was my first directory to investigate. No such log, nor in the BOINC project directory tree. Nor any other reasonable location.
This is a single core intel chip - single threaded only. And the video chips aren't supported b any GPU tasks. By the way, resetting the project and rebooting and restarting boincclient did eventually result in receipt of MIP tasks early today. All such tasks were dispatched in the usual few seconds with Signal 11 error. At this point I can try to get a boinc log going, but right now I see no other direction to try to sort this out. |
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alanb1951
Veteran Cruncher Joined: Jan 20, 2006 Post Count: 1317 Status: Offline Project Badges: 
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One silly(?) question - you say it's a small laptop, and have noted it's single-core; how much RAM has it got? I'm hoping 512MB or 1GB!
A typical MIP task wants over 256MB of memory to run, and I have no idea how it will perform if it has to depend on swap space... And, of course, all it needs is one failed memory allocation that isn't tested for properly, and problems will arise. By the way, I run 32-bit MIP jobs just fine under XUbuntu 16.04 in a 32-bit Virtual Machine, but I've given it a couple of GB of RAM to work with. I have not tried a test with a memory-deprived system, so I don't know what will actually happen in such a case. Good luck tracking down your problem - Al. |
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7846 Status: Offline Project Badges: 
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One other thing comes to mind. If you could post the first 30 or 40 lines from the BOINC log from startup that might be helpful. Look under "advance" and then "event log".
----------------------------------------Also, are you on a wired system or are you using wireless for your internet connectivity ? Cheers
Sgt. Joe
*Minnesota Crunchers* |
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rbm73
Cruncher USA Joined: Apr 1, 2011 Post Count: 28 Status: Offline Project Badges:
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Memory is maxed at 1.5 GB.
Internet connection is ethernet. boinc-client writes following to stdoutdae.txt on startup: 26-Jan-2018 10:31:33 [---] Starting BOINC client version 7.2.42 for i686-pc-linux-gnu 26-Jan-2018 10:31:33 [---] log flags: file_xfer, sched_ops, task 26-Jan-2018 10:31:33 [---] Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3 26-Jan-2018 10:31:33 [---] Data directory: /var/lib/boinc-client 26-Jan-2018 10:31:33 [---] No usable GPUs found 26-Jan-2018 10:31:33 [---] Host name: rmead-linux 26-Jan-2018 10:31:33 [---] Processor: 1 GenuineIntel Intel(R) Pentium(R) M processor 1.86GHz [Family 6 Model 13 Stepping 8] 26-Jan-2018 10:31:33 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx bts est tm2 26-Jan-2018 10:31:33 [---] OS: Linux: 4.4.0-111-generic 26-Jan-2018 10:31:33 [---] Memory: 1.46 GB physical, 1.49 GB virtual 26-Jan-2018 10:31:33 [---] Disk: 16.63 GB total, 8.14 GB free 26-Jan-2018 10:31:33 [---] Local time is UTC -5 hours 26-Jan-2018 10:31:33 [---] Config: GUI RPCs allowed from: 26-Jan-2018 10:31:33 [World Community Grid] URL http://www.worldcommunitygrid.org/; Computer ID 3167263; resource share 50 26-Jan-2018 10:31:33 [World Community Grid] General prefs: from World Community Grid (last modified 25-Jan-2018 19:58:25) 26-Jan-2018 10:31:33 [World Community Grid] Host location: none 26-Jan-2018 10:31:33 [World Community Grid] General prefs: using your defaults 26-Jan-2018 10:31:33 [---] Reading preferences override file 26-Jan-2018 10:31:33 [---] Preferences: 26-Jan-2018 10:31:33 [---] max memory usage when active: 1123.59MB 26-Jan-2018 10:31:33 [---] max memory usage when idle: 1348.31MB 26-Jan-2018 10:31:33 [---] max disk usage: 7.35GB 26-Jan-2018 10:31:33 [---] don't use GPU while active 26-Jan-2018 10:31:33 [---] (to change preferences, visit a project web site or select Preferences in the Manager) 26-Jan-2018 10:31:33 [---] gui_rpc_auth.cfg is empty - no GUI RPC password protection 26-Jan-2018 10:31:33 [---] Not using a proxy 26-Jan-2018 10:31:34 Initialization completed |
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D_S_Spence
Advanced Cruncher Canada Joined: Jan 5, 2017 Post Count: 118 Status: Offline Project Badges: 
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I run MIP on an old Acer Aspire netbook, with 1GB RAM and an Intel Atom N270, 1.60GHz, running Tiny Core Linux.
I initially had problems with the tasks crashing (also Signal 11 IIRC) at first, and I updated Tiny Core from 4.7.7 to 5.4, which is kernel 3.0.21 to 3.8.13. Unfortunately I forget what I had traced the problem down to specifically, or how, but I think it was some problem with the glibc version on the older Tiny Core distribution? |
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rbm73
Cruncher USA Joined: Apr 1, 2011 Post Count: 28 Status: Offline Project Badges:
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I aimed specifically for small footprint Linux. But I have never seen a discussion about BOINC compatibility with Tiny Core Linux. So I assume it works well for you.
what do you use to manage the jobs on your Acer? I usually use boinctui in an x-term or command line interface, but the command line is less convenient and efficient. Do you get notices of security updates/fixes for the Tiny Core Linux distribution? How do you keep it up to date? Thanks. |
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D_S_Spence
Advanced Cruncher Canada Joined: Jan 5, 2017 Post Count: 118 Status: Offline Project Badges:
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I wouldn't really recommend Tiny Core Linux for this purpose. That wasn't my aim. I just wished to comment that I have a machine with low resources that is able to run MIP WUs, and that it had previously been getting Signal 11, and an OS update fixed it.
I started with Tiny Core 4 because there is a Boinc extension for that version of the OS. All I had to do was install Tiny Core and then go to the Apps tool to install Boinc. But it's an old OS and an old version of Boinc. I was lucky that an upgrade to Tiny Core 5 didn't break Boinc. (The current version of Tiny Core is 8.2.1, but they are working on version 9). The version of Boinc is 7.0.28. I get messages from Boinc quite frequently that tell me that there is a newer version of Boinc. As long as that old version keeps working, it doesn't worry me, but in order to update it, I would probably have to build it myself. I don't worry about security on that machine. It's tucked away in the basement and I rarely look at it. All it does is work on WCG and SETI@home 24/7. I use the graphical boncmgr to manage the jobs. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I initially had problems with the tasks crashing (also Signal 11 IIRC) at first, and I updated Tiny Core from 4.7.7 to 5.4, which is kernel 3.0.21 to 3.8.13. Sounds right. Since July last year, they've been putting out new projects compiled for more recent versions of Linux, with no documentation of which version is required. However, older projects haven't changed, so they will still keep running fine. (during this beta is when it first hit me) |
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