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Posts by Darrell Tangman

1) Message boards : Number crunching : Waiting for shared memory (Message 67239)
Posted 10 Mar 2018 by ProfileDarrell Tangman
In chasing down a problem with running boinc on an Ubuntu Mate 17.10 system I killed and restarted boinc several times. Now BOINC Manager tells me I have eight Milkyway@Home tasks with status "Waiting for shared memory". I am currently splitting my resources between SETI@home and Milkyway@Home. Each time I restarted boinc I got two more partially completed Milkyway@Home tasks waiting for shared memory and two new Milkyway@Home tasks began execution. At the same time SETI@home tasks simply resumed execution when boinc was restarted. (Running boinc 7.8.3 x86_64-pc-linux-gnu, MilkyWay@Home 1.46, and SETI@home v8 8.00.)

Anyone have any thoughts on what might be going on?
2) Questions and Answers : Unix/Linux : Consistent "Validate error" status (Message 66176)
Posted 10 Feb 2017 by ProfileDarrell Tangman
The update to BOINC client version 7.6.31 successfully corrected my problem; Milkyway@Home work units are now completing correctly and validating.
3) Questions and Answers : Unix/Linux : Consistent "Validate error" status (Message 66157)
Posted 4 Feb 2017 by ProfileDarrell Tangman
Since updating to BOINC client version 7.6.31 this computer has completed one work unit, which shows a status of "Completed, validation inconclusive", definitely an improvement on "Validate error". Now I have to wait for someone else to complete that work unit, but the "q is 0.0" message has disappeared, which is certainly a hopeful sign.

It took a little hacking to get this done, because I've been running BOINC for quite a while. When I installed Ubuntu 16.04 I just linked to the old BOINC directory, which had been initialized from the BOINC download page, which is still handing out 7.2.42. I start the client manually using scripts written some time in the distant past; this PC is rebooted infrequently enough that it's never been worthwhile to switch over to letting init manage BOINC. The scripts don't work if there's a boinc running as user "boinc", and the obvious way to prevent init from starting boinc (setting ENABLED="0" in /etc/default/boinc-client) didn't prevent init from starting boinc. It remains to be seen if I've fixed that, the next time this PC gets a reboot.

Thank you for your assistance!
4) Questions and Answers : Unix/Linux : Consistent "Validate error" status (Message 66149)
Posted 30 Jan 2017 by ProfileDarrell Tangman
Since at least January 1, 2017, and for an unknown time prior to that date, all work units from MilkyWay@Home have resulted in a "Validate error" status. Time on this system is split 50:50 between MilkyWay@Home and SETI@home; during the same period SETI@home has yielded no invalid results. Any thoughts on what might be going wrong?

AMD FX-6300 / Linux 4.4.0-59
BOINC 7.2.42
MilkyWay@Home v1.40
5) Questions and Answers : Unix/Linux : Milkyway@Home says it's running a task on 4 CPUs, but it isn't. (Message 63505)
Posted 3 May 2015 by ProfileDarrell Tangman
Second the previous message; I just aborted an N-Body task that had accumulated 52 hours of CPU time and was still tying up four CPUs to run a single thread.

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