Posts by swiftmallard

21) Message boards : Number crunching : Ubuntu 20.04.1 does not validate (Message 1288) Posted 24 Dec 2020 by swiftmallard Post: I know nothing about Linux but it sure is nice to see a resolution to this sort of issue.
22) Questions and Answers : Windows : how to solve problems related to virtualization (Message 1267) Posted 19 Dec 2020 by swiftmallard Post: Unhide your computer There is a good tutorial about setting up your system here: https://quchempedia.univ-angers.fr/athome/forum_thread.php?id=44&postid=662
23) Questions and Answers : Windows : no tasks available? (Message 1069) Posted 22 Sep 2020 by swiftmallard Post: I am running a Windows system and have the test applications box checked. Long WUs show as available: NWChem long 2154 8325 69 (7.75 - 181.27) 9/22/2020 6:47:15 AM \| QuChemPedIA@home \| Requesting new tasks for CPU 9/22/2020 6:47:17 AM \| QuChemPedIA@home \| Scheduler request completed: got 0 new tasks 9/22/2020 6:47:17 AM \| QuChemPedIA@home \| No tasks sent 9/22/2020 6:47:17 AM \| QuChemPedIA@home \| No tasks are available for NWChem long
24) Message boards : Number crunching : Validate error. (Message 976) Posted 27 Jul 2020 by swiftmallard Post: >>> Workunit 1379411 This work unit has been set "validate error" by all that have crunched it so far, after several days of CPU time each. Not happy about that. This happens to all of us, and nobody likes it. The molecule your task was working on was probably unstable and the validate error confirms that.
25) Message boards : Number crunching : Long work units. (Message 975) Posted 27 Jul 2020 by swiftmallard Post: The task manager shows the CPU pretty much maxed out on all cores/threads. If you are satisfied that all cores are crunching properly, then let the WU run. It would not be the first time someone has had a very long running task.
26) Message boards : Number crunching : Long work units. (Message 973) Posted 27 Jul 2020 by swiftmallard Post: >>> Are you certain that your CPU is actually working on this? Yes. I am really curious about what it is actually doing, I've asked, no reply. It is still running this morning but the remaining field is now down to 1 second. Ctrl-Alt-Del and then select the Task Manager. Choose the Performance tab. There you will see a graph of your CPU activity. If it does not correspond accurately to what the Boinc Manager says is happening, then one or more of your cores is not actually crunching. Pause all your WUs in the Tasks tab of Boinc and then start them slowly, one by one. Watch the Windows Task Manager to see which one does not cause a rise in CPU activity. (It's most likely to be the one you have been posting about.) That is your problem WU and you should abort it.
27) Message boards : Number crunching : Long work units. (Message 969) Posted 26 Jul 2020 by swiftmallard Post: 12 Hours later and still crunching away, but now down to 00:00:03 remaining, hours minutes and seconds are relative with these jobs. Would be really good to know what it is they are doing, they are using serious amounts of CPU time. Are you certain that your CPU is actually working on this? The time/progress indicator will show that you are even if you are not. A better indicator is the Windows Task Manager - Performance tab. Your number of processors crunching should equal the amount you have set in your Boinc preferences. If the total comes up short, (and it does occasionally happen) then one of your cores is not crunching
28) Message boards : Number crunching : Validation Inconclusive (Message 962) Posted 24 Jul 2020 by swiftmallard Post: An occasional invalid result is normal in this project.
29) Questions and Answers : Macintosh : Computing Errors (Message 949) Posted 21 Jul 2020 by swiftmallard Post: Unhide your computer
30) Questions and Answers : Windows : Workunits error out after 7 seconds (Message 935) Posted 15 Jul 2020 by swiftmallard Post: Unhide your computer
31) Message boards : Number crunching : missing computers (Message 855) Posted 7 Jun 2020 by swiftmallard Post: Most of my returned WUs lately have gone into pending. Out of idle curiosity I looked to see who my wing crunchers were and I see some confusing info. The other crunchers have computer numbers such as 2329, 2333, 2328, 2236, 2334. All are anonymously owned and all have aborted the WUs I successfully completed. These WUs otherwise remain unsent to a third cruncher, effectively leaving my completed units in limbo. The server status page shows there are only 1592 computers even attached to the project. My question is: Do these other computers actually exist? My computer is not hidden, please take a look and see if I am missing something obvious.
32) Message boards : Number crunching : 2,5 days long and counting... (Message 835) Posted 7 May 2020 by swiftmallard Post: When a WU shows as running for a long time but using no CPU, it should be aborted.
33) Questions and Answers : Windows : "Postponed: vm job unmanageable restarting later" status in quchempedia (Message 812) Posted 25 Apr 2020 by swiftmallard Post: Are you trying to crunch with all available cores? It sure sounds like it. Momentary spikes in memory usage is the main suspect in triggering the messages you are seeing. I found through trial and error that my system was at it's most stable running on only 50% of the processors.
34) Questions and Answers : Windows : "Postponed: vm job unmanageable restarting later" status in quchempedia (Message 799) Posted 21 Apr 2020 by swiftmallard Post: When that happens to me I just shut down Boinc, open VB and make certain all tasks stop, then start Boinc again. If that doesn't work, you can always use brute force and restart your system. If you do nothing at all, I believe the unmanageable tasks will resume processing in 24 hours.
35) Message boards : Number crunching : 2,5 days long and counting... (Message 755) Posted 12 Apr 2020 by swiftmallard Post: I am going to let my "long" long tasks run, they are completing and validating.
36) Message boards : Number crunching : 2,5 days long and counting... (Message 748) Posted 10 Apr 2020 by swiftmallard Post: I have the same questions as I am seeing something similar on my Windows system. My resource monitor says I am using 83% of my CPU, consistent with crunching on 5 of 6 cores. A couple have been aborted but I hate to keep doing that.
37) Message boards : Number crunching : Short Tasks run for 14 hours and counting. (Message 728) Posted 7 Apr 2020 by swiftmallard Post: Regular tasks that run up to 99.999% and then sit for hours should be aborted. Look through the other threads in the number crunching board and you'll find many discussions about why. If you look at how others have fared with these WUs, they've already been aborted once or will not validate. Personally, on my system, I never let an od9 work unit run longer than 6 hours and I haven't been burned yet.
38) Message boards : Number crunching : No work? (Message 718) Posted 3 Apr 2020 by swiftmallard Post: What does the Boinc Event Log say?
39) Questions and Answers : Windows : Error Creation (Message 693) Posted 15 Mar 2020 by swiftmallard Post: Hello, I know this could be implemented into the other one. but i saw some kind of reason for one kind of errors. On my Computer i have an 4 core CPU and i give 3 for Boinc. When "QuChemPedIA" is doing 2 threads at the same time one is doing fine and the other one is making only errors. So the reason could be something arround the Virtual box that it only can handle 1 instance at the same time or something like this., actually i forced manually all other to stop and activace the one by one. What is the error that you are seeing? If it is this one: "Postponed: VM job unmanageable, restarting later." then you are trying to do too much at once for your machine. Most Windows users can only use half their cores in this project. If you unhide your computers we could more easily help.
40) Message boards : Cafe : SETI@home expat (Message 666) Posted 5 Mar 2020 by swiftmallard Post: Hello! With the distributed part of SETI@home coming to an end, I've been looking for potential replacement BOINC projects and found this one. When I was a student, a long time ago, I worked in theoretical chemistry (on Gaussian95/Gaussian98 and a Valence Bond program called turtle, which, ahem, deserved its name). Once the flow of WU from SETI@home dries out at the end of this month, I'll start crunching QuChemPedIA. :-) There is plenty of work here, welcome aboard!

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