Posts by Josu

1) Message boards : ATLAS application : ATLAS spends lots of time idling (Message 47877) Posted 20 Mar 2023 by Josu Post: Thanks for the help! As some of the audio programs I use say they require the lowlatency kernel, I'll see if I can use the regular kernal and have them still work properly. As for CVMFS, I will make sure it is conigured properly.
2) Message boards : ATLAS application : ATLAS spends lots of time idling (Message 47872) Posted 19 Mar 2023 by Josu Post: Hello, everyone, I am new to LHC@home and have recently managed to get my Linux PC to successfully run work-units. I have installed VirtualBox for the VBox tasks, and CVMFS for the native tasks, and both are working okay. I would prefer running native tasks, as I have noticed slightly faster FLOPS as compared with VBox. However, I have noticed that ATLAS Simulation jobs spend up to half an hour doing nothing before starting to use any CPU. The progress bar in BOINC Manager moves, but there is very little CPU or network usage, until later beginning to use the CPU, crunching for a while, waiting a little longer, and completing without errors. This happens with both VirtualBox and native tasks. Is this normal behavior for ATLAS? What is it doing in that time? Only one ATLAS job will run at a time, and BOINC will not start anything else until the job is finished, as the ATLAS jobs use all CPU each. In other words, ATLAS is spending about 30 valuable minutes doing nothing for a while before it randomly decides to start working, then completing successfully. I have read that the firewall may cause issues, but since both VBox and Native tasks do eventually complete successfully after they start, I am not sure that is an issue. System info: AMD Ryzen 7 5800X (8-core CPU) and 32GB RAM Ubuntu Studio 22.04 - Linux 5.15.0-67-lowlatency BOINC 7.18.4 (Installed via APT) VirtualBox 6.1 (Installed via APT)

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