LHC@home

Anyone got native ATLAS app to run on Ubuntu 18.04 LTS ?

I have a Ryzen machine running this OS and am trying to get it to crunch.
cvmfs is installed and singularity 2.5.2 as well.
Still tasks fail after about 10 minutes...

Looking at the logs, it fails at this step:

check singularity with cmd:singularity exec -B /cvmfs /cvmfs/atlas.cern.ch/repo/images/singularity/x86_64-slc6.img hostname

Singularity isnt working...

running start_atlas return value is 3

Yet manually running that command it seems fine:

boinc@boinc-ab350m:/var/lib/boinc/slots$ singularity exec -B /cvmfs /cvmfs/atlas.cern.ch/repo/images/singularity/x86_64-slc6.img host
name
boinc-ab350m
boinc@boinc-ab350m:/var/lib/boinc/slots$ echo $?
0
boinc@boinc-ab350m:/var/lib/boinc/slots$

Any idea?

Host link: https://lhcathome.cern.ch/lhcathome/show_host_detail.php?hostid=10510464

Example of failed task: https://lhcathome.cern.ch/lhcathome/result.php?resultid=205978265

There were problems but that didn't start until version 3. Versions 2.6.0 and 2.5.1 are working fine for me. Your version 2.5.2 should be OK and in fact it runs when typed at the command line. I was going to say it might be an execute permission problem but then noticed the command prompt suggests you're maybe logged in as the boinc user.

You may try a "cvmfs_config wipecache" and a "cvmfs_config probe".
If the last command prints errors, post them here.

Beside that you are running a 12-core setup which will try to allocate roughly 24 GB of RAM.
Not a good idea on a 16 GB computer.
You may limit the #cores per task via the project's webpage or a local app_config.xml.
A 2-core setup should be a good starting point on this computer.

I ran both commands; they complete correctly.
Good catch with the thread number, I've lowered it to 4 for now.

Digging some more into system logs, I've found these errors

Aug 28 18:22:12 boinc-ab350m Singularity: action-suid (U=1000,P=19539)> Home directory is not owned by calling user: /home/boinc
Aug 28 18:22:12 boinc-ab350m Singularity: action-suid (U=1000,P=19539)> Retval = 255

yet

boinc@boinc-ab350m:/var/lib/boinc/slots$ ls -ld /home/boinc/
drwxr-xr-x 8 boinc boinc 23 Aug 28 19:25 /home/boinc/

I've also tried what is listed under
http://opensciencegrid.org/docs/worker-node/install-singularity/#validating-singularity and it looks ok

boinc@boinc-ab350m:/var/lib/boinc/slots$ singularity exec --contain --ipc --pid \
>                 --home $PWD:/srv \
>                 --bind /cvmfs \
>                 /cvmfs/singularity.opensciencegrid.org/opensciencegrid/osgvo:el6 \
>                 ps -ef
WARNING: Container does not have an exec helper script, calling 'ps' directly
UID        PID  PPID  C STIME TTY          TIME CMD
boinc        1     0  0 17:32 ?        00:00:00 ps -ef

Home directory is not owned by calling user: /home/boinc

That rings a bell. It looks like maybe you made the same mistake I made a while ago. Did you use gyllic's directions for building BOINC, CVMFS and singularity and later install BOINC from repos without removing the prior BOINC installation? I did and IIRC the above message turned up. After much frustration trying to sort out the permissions and ownerships I gave up and reinstalled the OS.