Development for LHC@home

It might have been snapshot files since they are written to the same directory the differencing image is written to.

The logfile shows this:

2022-07-29 20:44:21 (10896): VM state change detected. (old = 'running', new = 'paused')
2022-07-29 20:46:19 (10896): VM state change detected. (old = 'paused', new = 'running')

Normal seems to be between about 650 to 800 MB

Agree.

It might have been snapshot files since they are written to the same directory the differencing image is written to.

No, there were no 'real' snapshots or sav-state files. There was only that big differencing vdi-file
That running, paused, running was during a project suspend for that period with LAIM selected,
else there would have been a sav-file written to disk and there would have been a new process-ID.
The current running diff-vdi atm is 620 MB, but I will suspend the project for another 2 minutes and see whether that's of any influence.

The current running diff-vdi atm is 620 MB, but I will suspend the project for another 2 minutes and see whether that's of any influence.

No extreme disk usage:
Peak disk usage 661.39 MB
https://lhcathomedev.cern.ch/lhcathome-dev/result.php?resultid=3102856

I have 60.63 CMS Simulation tasks running on AMD Ryzen 9 3900X (Windows 10), Intel Xeon E5-2678 v3 (Linux Mint), 2x Intel Xeon E5-1650 v4 (Windows10), and Intel i7-4790 (Linux Mint). Each computer is running a single task in Virtual Box.

The BOINC manager says that it is using all available CPU cores/threads on each of these computers, but the actual CPU usage is around 10-15%, so the tasks don't seem to be making efficient use of the available CPU power...

I am new to this project so it's possible I'm missing some important configuration settings. If so, I'd appreciate any help getting things set up properly.

I am new to this project so it's possible I'm missing some important configuration settings. If so, I'd appreciate any help getting things set up properly.

I suppose BOINC Manager shows something like (8 CPUs) and in VirtualBox Manager a VM show 8 CPUs.
CMS however uses only 1 CPU, so you have to set in your project preferences Max # CPUs 1 or you have to use app_config.xml

This is a development project.
To identify issues it's important to compare logfiles from as many computers as possible and (sometimes) contact a volunteer to make him aware of errors.
Hence, it is important that you make your computers visible for others here:
https://lhcathomedev.cern.ch/lhcathome-dev/prefs.php?subset=project


Regarding CMS:
The vbox VM is basically a multicore VM being able to run more than 1 subtask concurrently but the CMS backend systems are currently configured to send only 1 subtask to each VM.
Hence, you may set the "max #CPUs" to 1 on the page linked above.

I am new to this project so it's possible I'm missing some important configuration settings. If so, I'd appreciate any help getting things set up properly.

I suppose BOINC Manager shows something like (8 CPUs) and in VirtualBox Manager a VM show 8 CPUs.
CMS however uses only 1 CPU, so you have to set in your project preferences Max # CPUs 1 or you have to use app_config.xml

I wondered if it might be something simple like that, thanks!

You have no country set.

You have no country set.

You don't know Fardringle from the United States. Active for over 21 years in BOINC-land.

You have no country set.

You don't know Fardringle from the United States. Active for over 21 years in BOINC-land.

I fixed my country setting, and the CPU limit setting, and the show computers setting. Thank you to those who sent me messages reminding me that I hadn't done it yet.

I've been running BOINC since October 2000, and non-BOINC projects like SETI for a long time before that. I don't have a huge amount of computing power, but I have a personal goal to try to participate in every project that I possibly can. I especially like small projects and test projects, so I've been trying to get an account on this project almost since it was first launched. Never could get the site to let me make one, even with an invitation code from the devs, but it finally let me in yesterday so I'm here now. :)

Ok,
welcome Fardringle,
thank you for your Info's.

Did you know you can use alt + left and right arrow keys instead of alt+ f# keys?