Posts by computezrmle

1) Message boards : Number crunching : Expired SSL Certificate (Message 1745) Posted 11 May 2022 by computezrmle Post: Just to mention this: The project server quchempedia.univ-angers.fr occasionally presents an SSL certificate that has expired at Tue, 26 Apr 2022 18:01:10 UTC. A 2nd certificate used as an option will soon expire at Sun, 26 Jun 2022 07:54:29 UTC. In addition the server does only support TLS v1.2. It would be good to switch to TLS v1.3 as preferred protocol.
2) Message boards : Number crunching : use hyper threading? (Message 1724) Posted 13 Apr 2022 by computezrmle Post: To understand what hyper-threading means and how it affects computer performance this might be a good entry point: https://en.wikipedia.org/wiki/Hyper-threading You may also get an impression why nobody will be able to give a 100 % correct answer whether it's better to run the project with or without HT on your computer.
3) Message boards : Number crunching : High failure rate (Message 1720) Posted 2 Apr 2022 by computezrmle Post: https://quchempedia.univ-angers.fr/athome/result.php?resultid=10404648 VBoxManage.exe: error: Cannot register the hard disk 'C:\ProgramData\BOINC\slots\8\vm_image.vdi' {2c29d1e5-b43d-46fd-b9c5-69a421363472} because a hard disk 'C:\ProgramData\BOINC\slots\9\vm_image.vdi' with UUID {2c29d1e5-b43d-46fd-b9c5-69a421363472} already exists "... Cannot register the hard disk ... because a hard disk ... already exists" There are remains from a previous crash. It's at least an old disk entry in the VirtualBox Media Register. You need to cleanup your BOINC slots and your VirtualBox Media Register (best to use the VirtualBox Media Manager from the menu).
4) Questions and Answers : Getting started : Problem joining QuChem (Message 1670) Posted 23 Feb 2022 by computezrmle Post: I can now communicate with the server but have not received any tasks The Windows apps require VirtualBox to be installed. See: https://quchempedia.univ-angers.fr/athome/apps.php In addition they are marked as "beta test". Hence, it might be required to also allow beta apps here: https://quchempedia.univ-angers.fr/athome/prefs.php?subset=project