LHC@home

''Creates the working directory /var/lib/boinc-client/ for BOINC data files and the slots and projects directories. Also creates links from this directory to the files in /etc/boinc-client''

I'm on Linux Ubuntu 18.04 and have a SSD where Boinc is installed from software center, of 32 GB.
/ partition is not enought for LHC. Keep getting messages like you need more 1200 MB of space to run ALTLAs and other projects form LHC.
Yesterday I seen a documentary about first second after BIG BANG -- with the colider -- Higs -- and realy want to paticipate.
I've tracked projects folder in var/lib/boinc-client/ but don't know how to set download folder on second HDD for LHC and create link to boinc.
In conclusion I want the rest of projects and BOINC on SSD (it's new -- no bad sectors) and LHC on HDD.
Please teach me HOW TO.
Thank you.

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The data for all the projects for 1 BOINC client has to be in one location, so it's not possible to separate LHC-data to another disk.
Simplest solution: Install BOINC with data written to your HDD.
Extreme hard solution is to run 2 BOINC clients with different data directories on different disks. On Linux I don't have any experience for such a setup.
On Windows that was not so difficult.

The data for all the projects for 1 BOINC client has to be in one location, so it's not possible to separate LHC-data to another disk.

I personally run a setup where the /slots/ folder is mounted to tmpfs and the rest of the folder structure resides on an SSD.
=> 2 separate filesystems.
This works with all of my projects except primegrid.


@Pop Horea-Vasile
Could it be that you try to run 8-core ATLAS tasks (that require 10.2 GB RAM) on a computer that has only 8 GB RAM?

If so, go to the preferences page and reduce the max #CPUs per task:
https://lhcathome.cern.ch/lhcathome/prefs.php?subset=project
This would also configure your ATLAS VMs to use less RAM (according to RAM = 3GB + #cores * 0.9GB)

Would increasing swap space help this contributor? Albeit s-l-o-w-l-y?

"The data for all the projects for 1 BOINC client has to be in one location, so it's not possible to separate LHC-data to another disk."

Ok, BUT, we can set a hardlink (at least in Linux/UNIX) TO that one location, right?