Posts by mmonnin

1) Message boards : Number crunching : Inconclusive validation (Message 1710) Posted 12 Mar 2022 by mmonnin Post: My inconclusives are coming from people somehow completing tasks in 3 seconds. https://quchempedia.univ-angers.fr/athome/show_host_detail.php?hostid=9823 https://quchempedia.univ-angers.fr/athome/show_host_detail.php?hostid=10848
2) Message boards : News : Credits and Gridcoin (Message 483) Posted 1 Feb 2020 by mmonnin Post: Wow and the user wasn't even Gridcoin. mmmmmm....are you sure about that? There was 1 user with negative 1.2mil credit on the day the admin said it was removed. A former team member whom I would not have guessed to be a cheater. Many would prefer a fixed credit system especially for nearly equal run times but run times all over the place for this project.
3) Message boards : News : Credits and Gridcoin (Message 479) Posted 31 Jan 2020 by mmonnin Post: No one was cheating. Nice way to jump to conclusions. The thread title, from the admin of the project, has the word cheating.
4) Message boards : News : Credits and Gridcoin (Message 474) Posted 31 Jan 2020 by mmonnin Post: Wow and the user wasn't even Gridcoin.
5) Message boards : Science : What are you calculating? Some explanation (Message 372) Posted 21 Dec 2019 by mmonnin Post: The first calculation is the optimization of the atomic positions. A geometrical optimization to obtain the 3D atomic positions that is the most stable. If the starting atomic positions are far from the stable ones, this step can take a very long time. Hence, the sometimes unpredictable very long calculations times! (See https://en.wikipedia.org/wiki/Energy_minimization but it is quite mathematical.) [/i] Hi Thomas, Is this the reason every few days that all tasks are resends? Every task is either A) very old like a dsgdb9nsd_nwchem with multiple errors or B) a validate error from another user? For days everything is a new task with _0 then everything is _1 or sometimes _5, _6. During this period of resends it seems like much of our work is wasted along with the many, many....many validate errors.
6) Message boards : Number crunching : Native Multi-Threading (Message 364) Posted 19 Dec 2019 by mmonnin Post: NWChem that is used here for the calculations of the molecules, profit from multithreading only with bigger molecules. I don't know if NWChem supports gpu calculation (CUDA or, better, OpenCL), but this may be a great improvement... Just ignore this user. They make the same comment at every BOINC project like GPUs are some voodoo magic.
7) Message boards : Number crunching : Checkpoint? (Message 353) Posted 17 Dec 2019 by mmonnin Post: Is there any hope that native QCP will get checkpointing added??? Some WUs are running a long time and a lot of electricity may be wasted if one has to start over for any of many reasons. If it runs for a long time then it's probably a bad task. Abort it.
8) Message boards : Number crunching : No work? (Message 335) Posted 7 Dec 2019 by mmonnin Post: Some people still think GPUs fix everything...
9) Message boards : Number crunching : Monster wu (Message 303) Posted 25 Nov 2019 by mmonnin Post: Mine aren't the vbox tasks, yours are.
10) Message boards : Number crunching : Monster wu (Message 301) Posted 24 Nov 2019 by mmonnin Post: Something happened to the tasks over the weekend. They either 1 - Run for a couple of seconds with validate errors. 2 - Run for days and never reach 100% with the CPU usage dropping. 3 - Get to 100% and never complete with the GPU usage dropping. They just aren't completing like they were in the past week.
11) Message boards : News : Scientific publication (Message 297) Posted 19 Nov 2019 by mmonnin Post: Hi Thomas, What are the hardware requirements to accomplish a task? I had to abort a task, after it's deadline was 14 days, but my pc would estimate to finish the task in 26 days. Can i run this better on a multicore CPU, or is a single core CPU of at least 5Ghz needed to beat the deadline? ETAs will correct themselves after completing some tasks. They typically complete before the ETA.
12) Message boards : Number crunching : Error while computing with windows 10 (Message 213) Posted 24 Oct 2019 by mmonnin Post: Follow these steps in order: 1. Turn on VT-X in your BIOS 2. Reboot 3. Detach from QuChemPedIA 4. Attach to QuChemPedIA That should fix it. You don't need to do 3 and 4. You do need to reset the p_vm_extensions_disabled tag in the client_state.xml file. Stop BOINC from running. In your BOINC top level directory you will find a file called client_state.xml. Open this file with a simple editor (eg Notepad on Windows) and look for this line: <p_vm_extensions_disabled>1</p_vm_extensions_disabled> You need to change the 1 to a 0 (zero) This line is usually absent from the file unless you have tried to run VBox tasks without having enabled the Virtualisation (VT-X in Windows) beforehand. So line should look like this after you've changed it: <p_vm_extensions_disabled>0</p_vm_extensions_disabled> Save the file. The file needs to be in plain text so using a fancy editor that leaves formatting characters will mess it up. Restart BOINC and get more tasks, they should then work. I haven't been able to run vbox apps on my Win7 PC for probably a couple years now. This fixed it! Thanks.
13) Message boards : Number crunching : New T1 native nwchem work unit affinity problem. (Message 194) Posted 22 Oct 2019 by mmonnin Post: Same for me for the most part. 2P system using just the 1st thread of each CPU.