On Fri, 7 Aug 2015, Serge Monkewitz wrote: > (Aside: I don˙˙t understand how a process run as qserv was allowed to >create an empty file in there, as the directory is not group writeable) I don't understand that either but have been bitten by this problem more that I would like to say. It's annoying and maybe it has something to do with AFS. But if the token expired (which likely it did) it shouldn;y have vene created a zero length file. It's very exasperating. The defintive place where the core file is supposed to get created can be determined by 'lsof -p <pid>' for the process and looking for CWD. I think I will add a message to the log explicitly saying what the current working directory is as this seems to be a point of confusion. Andy ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the QSERV-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1