Posts by Luigi R.

1) Message boards : Number crunching : Inconclusive validation (Message 1601) Posted 21 Dec 2021 by Luigi R. Post: Not quite correct either. It tells the researchers that the initial starting points do not produce valid results. That is useful information, and part of what they are trying to find. Yeah, I know what you mean. Scientists can get useful information even from failures, that's the most important thing here. We volunteers get 0 credits from invalid tasks as well.
2) Message boards : Number crunching : Inconclusive validation (Message 1599) Posted 20 Dec 2021 by Luigi R. Post: It is quite normal, though I don't remember the distinction between "inconclusive" and "invalid". Inconclusive tasks turn into valid if the results of at least one wingman match yours. However, it can happen that all the tasks relating to the same workunit are inconclusive and a couple of matching results (=valid tasks) is not found either. Invalid tasks are definitely wrong or useless.
3) Message boards : Number crunching : Host ID 1388 corrupted (Message 1454) Posted 13 Aug 2021 by Luigi R. Post: 7 7762
4) Message boards : Number crunching : Host ID 1388 corrupted (Message 1450) Posted 5 Aug 2021 by Luigi R. Post: Only computer 6860 has virtualization enabled. . Tullio Linux hosts do not need virtualization though.
5) Message boards : Number crunching : Host ID 1388 corrupted (Message 1448) Posted 4 Aug 2021 by Luigi R. Post: 6860 7839 7937
6) Message boards : Number crunching : Host ID 1388 corrupted (Message 1401) Posted 4 Apr 2021 by Luigi R. Post: 360 was good some days ago, now it isn't. 361 too. Fortunately it's not crunching.
7) Message boards : Number crunching : Host ID 1388 corrupted (Message 1387) Posted 18 Mar 2021 by Luigi R. Post: You can try the solution here : https://quchempedia.univ-angers.fr/athome/forum_thread.php?id=129&postid=1279 The conclusion seems to be : Just don't use BOINC 7.16.4. But you have 7.16.6 that should work... Yeah, my BOINC version is right. Meanwhile I believe that I have found what is causing validate errors. That is YIELD_SLEEP_TIME="1000" LD_PRELOAD="/lib/libsleepboinc.so" boinc instead of boinc I use to start BOINC like that because it fixes the bug of 100% CPU usage for some OpenCL apps. I tried to start BOINC by the second command above and I didn't see early failures on QuChemPedIA. I started BOINC again by the first command and the same task failed after 4 seconds. https://quchempedia.univ-angers.fr/athome/result.php?resultid=7052813 So, now I know that I have to choose between QuChemPedIA and those OpenCL apps...
8) Message boards : Number crunching : Host ID 1388 corrupted (Message 1384) Posted 17 Mar 2021 by Luigi R. Post: Hostid 5668 is mine. ~850 invalids. I don't know what's happening, sorry. Can you help me to solve? https://quchempedia.univ-angers.fr/athome/result.php?resultid=7047415
9) Message boards : Number crunching : Host ID 1388 corrupted (Message 1309) Posted 11 Jan 2021 by Luigi R. Post: 3164 Virtualbox errors here. <message>(unknown error) - exit code 4294967148 (0xffffff6c)</message> <stderr_txt>Error Code: ERR_CPU_VM_EXTENSIONS_DISABLED</stderr_txt>
10) Message boards : Number crunching : Host ID 1388 corrupted (Message 1296) Posted 28 Dec 2020 by Luigi R. Post: 4991 4992 (few tasks for now, let's see)
11) Message boards : Number crunching : Some hosts are delaying (long) batch completion (Message 1120) Posted 2 Oct 2020 by Luigi R. Post: E.g. 143 540 2447 2537 Host 2537 reported all (completed) tasks on 25 September; host 143, 540 and 2447 did not crunch anything before deadline. Who was 75% right? :( P.S. those hosts, if offline, could still report tasks with success before server resends them to other volunteers.
12) Message boards : Number crunching : Validation Inconclusive (Message 1027) Posted 22 Aug 2020 by Luigi R. Post: Again, ALL tasks of type long released after August 11th appear faulty. For each invalidated task, you will finde wingmen crate-wise to confirm these tasks are buggy. Why re-circulate this often then? I observed sometimes they get validated. https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=1383666 Admin said faulty tasks are useful too. https://quchempedia.univ-angers.fr/athome/forum_thread.php?id=104&postid=941#941 Can anyone show me a properly validated one meeting the specs I described above (Linux, long, released after August 11th)? Michael. Personally I can't. I downloaded all my tasks before. Anyway I can link something: https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=1360632 https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=1360629 https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=1360365 https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=1382404 https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=1360317 https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=1360885 etc... Go to top computers and check yourself by setting valid long tasks on Linux systems. e.g. https://quchempedia.univ-angers.fr/athome/results.php?hostid=884&offset=0&show_names=0&state=4&appid=3
13) Message boards : Number crunching : Validation Inconclusive (Message 1025) Posted 22 Aug 2020 by Luigi R. Post: [...] I only process the more demanding NWChem long tasks with Linux since around Agust 11th. Before, I had all tasks in the works. The last correctly validated "long" tasks were returned on August 9th. Maybe it is just an issue with these long tasks then? The project lead has to specifically take a look at these work packets injected into the system around August 11th, I think. Michael. Michael, there isn't any problem with long tasks. Mostly "multiple inconclusive"/"validate error" WUs are circulating. Good tasks are gone, all assigned to someone. If you request new tasks now, you probably get those tasks that concern unstable molecules. Sometimes you will get good expired tasks, that could be probably not problematic.
14) Message boards : Number crunching : Why are we waiting? (Message 1021) Posted 18 Aug 2020 by Luigi R. Post: https://quchempedia.univ-angers.fr/athome/forum_thread.php?id=109
15) Message boards : Number crunching : Validation Inconclusive (Message 1017) Posted 11 Aug 2020 by Luigi R. Post: I know you said before that even the failures can help (at least I think you said that), but failure after failure (which is what they become if no validations occur), does not help the volunteers with no reward for lots of processing time. As good tasks are validated (and crossed off), only problematic tasks remain and get resent out (e.g. 1374241). So failures and chances of not getting rewarded are increasing a bit.
16) Message boards : Number crunching : Some hosts are delaying (long) batch completion (Message 994) Posted 3 Aug 2020 by Luigi R. Post: There are always extreme cases, don't make it a generalization. You're whining about points, and on my end, it's about the scientific results I'm waiting for... At the moment, project is running and we don't plan to shutdown it. Your point is logically right. I'm not whining, I'm just raising a scenery that, as volunteer, I would hate so much. If project will run enough time, I've nothing to say anymore about it. The deadlines are too long? In my experience, if they are too short, there are a lot of failures. Good. After a certain number of failures, the workunit is abandoned and I don't get my result. Can't you run it locally by trusted machine to get your results? Anyway, thanks for your quick response. ;)
17) Message boards : Number crunching : Some hosts are delaying (long) batch completion (Message 991) Posted 2 Aug 2020 by Luigi R. Post: Just thinking... It's an uncommon behaviour that causes high number of pending WUs and it wouldn't be a problem if deadlines weren't so long. I would like to be sure that my completed work will get validated one day. I'm afraid of the fact that resends could be got by not-crunching hosts again. After 6 months or more, we don't know if this project will be still online. I guess it's someone bunkering for challenges like Formula BOINC sprints, otherwise it would be a waste of time to wait for resends when someone of active users can crunch them as soon as possible.
18) Message boards : Number crunching : Some hosts are delaying (long) batch completion (Message 989) Posted 2 Aug 2020 by Luigi R. Post: Some hosts download work and do not crunch anything. E.g. 143 540 2447 2537 If we exclude the case they are working offline, there is something wrong here.
19) Message boards : Number crunching : Validation Inconclusive (Message 986) Posted 28 Jul 2020 by Luigi R. Post: There is any problem with inconclusive couples. They are sent to third host soon or later. More later than soon. :) Waited for 3 months to know some inconclusive results of mine were the valid ones. Now resends may be faster because a few tasks remain.
20) Message boards : Number crunching : Validate error. (Message 985) Posted 28 Jul 2020 by Luigi R. Post: It happened to me too. https://quchempedia.univ-angers.fr/athome/workunit.php?wuid=1400377 Only once. Probably they are isolated cases.

Next 20