Posts by PDW

1) Questions and Answers : Getting started : Problem joining QuChem (Message 1678) Posted 24 Feb 2022 by PDW Post: Well it would normally go without saying to look in the event log to see what it said when it found the account xml file, assuming it found it, but you seem to know best.
2) Questions and Answers : Getting started : Problem joining QuChem (Message 1676) Posted 24 Feb 2022 by PDW Post: yes, I did What else have you done that you haven't told us ?
3) Questions and Answers : Getting started : Problem joining QuChem (Message 1673) Posted 23 Feb 2022 by PDW Post: I followed the instructions and added the .xml file to the BOINC data folder (where also the xml files of the other installed projects were present), but now the question is: how can I get the new project started? It does NOT show up in the project list of the BOINC manager. What am I missing? Did you stop and restart Boinc ?
4) Message boards : Number crunching : Waiting for memory (Message 1583) Posted 26 Nov 2021 by PDW Post: What percentage of RAM do you allow BOINC to use (set in your preferences) ?
5) Message boards : Number crunching : Project is ignoring its own preferences (Message 1565) Posted 20 Nov 2021 by PDW Post: Set "Max # jobs" in your project preferences to 2 if you only want to download and run 2 tasks at a time. "Max # CPUs" is how many cores should be used if the task can use multiple cores. If this is set to 1 then you will only use the number of cores that you set in the "Max # jobs" setting for this project.
6) Questions and Answers : Windows : how to solve problems related to virtualization (Message 1560) Posted 11 Nov 2021 by PDW Post: si j'installais quchem avec boinc sous linux avec une machine virtuelle sous linux mint. quchem fonctionne en natif sous linux. je mets 16 gigas de ram taches illimitées cpu illimités qu 'en pensez vous. merci I think the translation is telling me you want to run unlimited cores in the VM ? You need to leave some spare CPU capacity for the OS and running the VM. I haven't made note of how much memory tasks are using natively but if you only run say 10 cores in the VM then 16 Gb would be enough RAM.
7) Questions and Answers : Windows : how to solve problems related to virtualization (Message 1559) Posted 11 Nov 2021 by PDW Post: I am number 30 in the RAC ranking list. Before the 30 September stop due to an expired security certificate I was even better and I am now climbing back again. Thie means my results are good even if my CPU, an Intel i5 9400f is vastly inferior to the majority of Linux hosts. Tullio If you were the only person in a race you would finish first. Does not make you a good runner. There is not a lot of work being done here. You have the hosts that should be blacklisted but aren't, producing thousands of invalid results. You have those running VBox and producing many short running invalid results, difficult to quantify how many of these, but a lot. You have the bad molecules that run for a long time that have to run 8 times but get no credit. Chances of getting good value for the time and cost of running this project are low. I'd like to get to 50M but currently babysitting a single host running a few tasks now and then to reduce wasted time/effort.
8) Questions and Answers : Windows : how to solve problems related to virtualization (Message 1555) Posted 11 Nov 2021 by PDW Post: All my invalids are very short lived tasks and as damotbe said in another post they correspond to bad molecules. Tullio I don't get any short lived tasks. I am running native linux but if it was a bad molecule wouldn't I get them too ? If they are bad molecules why can others hosts get valid results with them ? For example this task you ran: https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=2954031 You got a Validate error in less than a minute, initially it said "ERROR: Vboxwrapper lost communication with VirtualBox, rescheduling task for a later time" and rescheduled it to start again. It re-started about an hour later but as soon as it started the VM it shut it down. It does not look like any actual work was done to a molecule, good or bad. Two other hosts successfully ran that task to completion and got credit. The two other failures (on native linux) are due to bad hosts, I reported 8613 previously but it is still churning out bad results, 9415 I didn't report for blacklisting as it wasn't getting new work. I would say the bad molecule tasks are those that run to completion by multiple hosts but get a status of "Completed, validation inconclusive" and never validate, eventually having too many attempts. Your short lived tasks look like your host/environment can't cope with what it is being asked to do. Some get to work but more of them fail to start properly.
9) Questions and Answers : Windows : how to solve problems related to virtualization (Message 1553) Posted 11 Nov 2021 by PDW Post: bonjour j'utilise windows 10 21h1 cpu i7 9750h, 32gigas ram et oracle vo 6.128 j ai utilisé la 6.122 cette nuit et le probleme est identique. merci a tous pour votre aide It is a different problem, but now you are not having many errors for "VERR_NEM_INIT_FAILED (VERR_NEM_VM_CREATE_FAILED)" Some tasks have worked and validated so you have all that is necessary for it to work. How many are you trying to run at the same time ? I would stop new tasks from running, once those running have failed or completed I would then go into VirtualBox and remove any orphaned VMs to clear the environment. For good measure I would reboot. Then I would allow just a single task to run and see what happens, there are many ways to do this, if you don't know ask. If that still fails what is the error message in the Stderr ouput ? Running VMs is hard work for the disk io especially if you are spinning up quite a few of them at the same time, even on an SSD. If the computer has a high CPU usage this can also cause problems for VMs.
10) Questions and Answers : Windows : how to solve problems related to virtualization (Message 1549) Posted 11 Nov 2021 by PDW Post: I am using VBox 6.1.28 also on LHC@home tasks such as Atlas@jome, CMS@home and Theory@home with good results. Yullio @Yullio, did you read the link I provided ? You are running Windows 11, pascal768 is running Windows 10. In another thread you said you were getting good results at this project with 6.1.28 but you have more invalids than you have valid results, not a good sign.
11) Questions and Answers : Windows : how to solve problems related to virtualization (Message 1547) Posted 10 Nov 2021 by PDW Post: merci de la réponse mais cela je le sais. je ne cherche pas une solution temporaire car le problème revient. je cherche une solution définitive pour faire un max de calcul en simultané sur quchem. merci d'avance Bonsoir ! Your host 9107 with Virtualbox 6.1.28 installed is getting error messages: VBoxManage.exe: error: Call to NEMR0InitVMPart2 failed: VERR_NEM_INIT_FAILED (VERR_NEM_VM_CREATE_FAILED) See this link that suggest you should downgrade to Virtualbox 6.1.26 to fix those errors: https://forums.virtualbox.org/viewtopic.php?t=104175
12) Message boards : Number crunching : Host ID 1388 corrupted (Message 1539) Posted 7 Nov 2021 by PDW Post: https://quchempedia.univ-angers.fr/athome/results.php?hostid=5869
13) Message boards : Number crunching : Host ID 1388 corrupted (Message 1537) Posted 7 Nov 2021 by PDW Post: https://quchempedia.univ-angers.fr/athome/results.php?hostid=8589
14) Message boards : Number crunching : Host ID 1388 corrupted (Message 1536) Posted 7 Nov 2021 by PDW Post: https://quchempedia.univ-angers.fr/athome/results.php?hostid=8610
15) Message boards : Number crunching : Host ID 1388 corrupted (Message 1535) Posted 6 Nov 2021 by PDW Post: https://quchempedia.univ-angers.fr/athome/results.php?hostid=7435 https://quchempedia.univ-angers.fr/athome/results.php?hostid=8512 https://quchempedia.univ-angers.fr/athome/results.php?hostid=8613 https://quchempedia.univ-angers.fr/athome/results.php?hostid=9345
16) Message boards : Number crunching : Host ID 1388 corrupted (Message 1396) Posted 30 Mar 2021 by PDW Post: https://quchempedia.univ-angers.fr/athome/results.php?hostid=6835
17) Message boards : Number crunching : Host ID 1388 corrupted (Message 1392) Posted 24 Mar 2021 by PDW Post: https://quchempedia.univ-angers.fr/athome/results.php?hostid=223
18) Message boards : Number crunching : Host ID 1388 corrupted (Message 1149) Posted 16 Oct 2020 by PDW Post: https://quchempedia.univ-angers.fr/athome/results.php?hostid=3712
19) Message boards : Number crunching : Host ID 1388 corrupted (Message 1136) Posted 10 Oct 2020 by PDW Post: This host is having a bad time: https://quchempedia.univ-angers.fr/athome/results.php?hostid=4443 State: All (46091) · In progress (8) · Validation pending (4502) · Validation inconclusive (0) · Valid (0) · Invalid (41581) · Error (0)
20) Message boards : Number crunching : No new task sent out when wingman aborted or got a validation error (Message 883) Posted 12 Jun 2020 by PDW Post: Any advices ? Do I understand well ? 42 is what I would have set them to ! You could try asking over here for guidance... https://groups.google.com/a/ssl.berkeley.edu/forum/#!forum/boinc_projects

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