Development for LHC@home

llowing lines check for singularity and set the version from CVMFS if there's no local installation.

[pre]def check_singularity(sin_binary):
logger.info("Checking Singularity...")
(ret,mes)=commands.getstatusoutput("%s --version" % sin_binary)
if ret!=0:
if mes.find('not found') != -1:
logger.info("Singularity is not installed, using version from CVMFS")
else:
logger.info("Singularity seems to be installed but not working: %s" % mes)
logger.info("Will use version from CVMFS")
sin_binary = '/cvmfs/atlas.cern.ch/repo/containers/sw/singularity/x86_64-el7/current/bin/singularity'
else:
logger.info("Singularity is installed, version %s" % mes)
return sin_binary[/pre]

You may be aware that on my hosts the check doesn't include "not found" in it's output:
[pre]> singularity --version
If 'singularity' is not a typo you can use command-not-found to lookup the package that contains it, like this:
cnf singularity[/pre]

Hence the script logs "Singularity seems to be installed but not working" instead of "Singularity is not installed ...".

r host logs the message in german language which also doesn't include "not found":
[pre]singularity: Kommando nicht gefunden.[/pre]