Posts by JWMED

1) Message boards : Questions and problems : Log to file other than /var/log/messages (Message 110225)
Posted 25 Oct 2022 by JWMED
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I'm running a large server with 192 cores. Consequently, /var/log/messages gets cluttered with messages of started and finished tasks.

Is there a setting somewhere which would use a different file for this output, or suppress it altogether?
2) Message boards : Questions and problems : Does BOINC suspend partially? (Message 100736)
Posted 13 Sep 2020 by JWMED
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So I'm guessing low priority means niceness 19? Our institute has a policy of requesting that all users run their computations at niceness 19 to ensure smooth SSH and RStudio sessions. I guess that would be a problem then with BOINC?
3) Message boards : Questions and problems : Does BOINC suspend partially? (Message 100715)
Posted 12 Sep 2020 by JWMED
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This might be a total noob question, but that's what I am, so here we go: I'm trying to understand how tasks suspension works in BOINC with WCGrid. There are options as to the maximum number of cores used, and an option to suspend if a certain number of non-BOINC processes are run. To me this seems to suggest that BOINC will either run or suspend ALL tasks, whereas intuitively I would think that on a multiprocessor system suspending only a subset of running tasks would be the way to go, e.g. run on a maximum of 100 out of 120 cores, and if 21 cores are used for other stuff, suspend one task, if 30 are used, suspend 10 etc.. Is my understanding correct?
4) Message boards : Questions and problems : Profile recommendations for HPC (Message 100683)
Posted 10 Sep 2020 by JWMED
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I am running BOINC on two headless HPCs (80 and 192 logical cores, 2x hyperthreaded I believe). We are a research instituition where people will log in and run both small daily statistical tasks as well as big multi-core computations from time to time. As my boss has kindly allowed our server infrastructure to be used for OpenPandemics, I'd like to make sure that BOINC does not interfere with anyone's work, while at the same time get the maximum contribution out of this.

I was wondering what the recommendations are for this use case. I have limited the number of logical cores to about 85% so far. I was especially wondering if there are recommendations for the CPU time. Will using values lower than 100% mean that user tasks will start quicker, as they get access to a core more easily (if that's a thing, I don't know much about scheduling and the like), and will the constant change in temperature and the resulting mechanical work from expansion and contraction wear out the CPUs more quickly than going with 100% CPU time?

Also, users are instructed to run all their tasks with niceness 19, to make logins and RStudio sessions smooth.

Any other considerations I should make?
5) Message boards : BOINC client : Authentication error (Message 100682)
Posted 10 Sep 2020 by JWMED
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The problem was the ownership of the files, changing it to boinc:boinc did the trick. Thanks everyone for your support!
6) Message boards : BOINC client : Authentication error (Message 100677)
Posted 10 Sep 2020 by JWMED
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There is no password in /etc/boinc-client/gui_rpc_auth.cfg. The owner is root:root though, I'll check if that's the problem.
7) Message boards : BOINC client : Authentication error (Message 100676)
Posted 10 Sep 2020 by JWMED
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I'm using my full account key. I'm on CentOS 7, so I'm running from inside /var/lib/boinc.
8) Message boards : BOINC client : Authentication error (Message 100671)
Posted 9 Sep 2020 by JWMED
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That is what I did, I forgot to type in the www in my previous post.
9) Message boards : BOINC client : Authentication error (Message 100669)
Posted 9 Sep 2020 by JWMED
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boinccmd --run_benchmarks

boinccmd --project_attach http://worldcommunitygrid.org <my_key>
10) Message boards : BOINC client : Authentication error (Message 100663)
Posted 9 Sep 2020 by JWMED
Post:
I'm running boinccmd, built from BOINC 7.16.6, on a company server (CentOS 7 Core) as a non-root user (I am responsible for the project, but I am not the admin). When trying to connect to an existing account or attach projects, I get an authentication error. The admin added me to the boinc group, which according to https://boinc.berkeley.edu/forum_thread.php?id=10903 should solve the issue, but it doesn't. I can run simple commands like --version or --get_state without problems, and I have confirmed that the client is up and running, and that my working dir is /var/lib/boinc/. But so far, I cannot get it to perform any tasks. Any ideas what the problem could be?




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