On Wed, Aug 31, 2011 at 12:07:42PM -0700, Johan Hake wrote: > A recent commit to instant fixes this problem. > > The reason this has been a problem before is that the filelocking system used > by instant does not work for NFS. Which many of use when submitting jobs to a > cluster. > > I found a NFS safe file locking library online, fcntl: > > https://launchpad.net/flufl.lock > > which is now supported by instant. If not present it defaults to the old one. > My understandment of file locking is still limited, but it worked for some > test > cases I have using PyDOLFIN, which broke misserably with the old file locking > module. > > Please install it and test this new feature. > > The time where a simulation need to be run on the frontend first to generate > the compiled code might be over :).
Nice! I just did exactly that today before submitting a job (run on frontend to get all the forms in place). Which package contains flufl, and is it installed on bigblue? -- Anders > Johan > > On Wednesday August 3 2011 20:49:24 Johan Hake wrote: > > Hello! > > > > Why do we write generated code to file when the jit compilation is used? > > This introduce a cause of error which has annoyed me for some time now. > > Instead of writing the code to file and then in ufc.build we just read the > > file again, we could just pass the code as a single str. > > > > This would save us for a lot of hassle with file access during server run. > > When several runs are commited and executed at one time I experience a lot > > of runs that stops prematurely because of file access problem. This > > "should" have been fixed by some file locking mechanism which > really is > > not working. > > > > If you think this is a cool thing to do I can do the work. We just have to > > add a parameter, or an extra argument to some ffc functions and change the > > interface to ufc.build. > > > > Johan > > > > _______________________________________________ > > Mailing list: https://launchpad.net/~ffc > > Post to : ffc@lists.launchpad.net > > Unsubscribe : https://launchpad.net/~ffc > > More help : https://help.launchpad.net/ListHelp > > _______________________________________________ > Mailing list: https://launchpad.net/~ffc > Post to : ffc@lists.launchpad.net > Unsubscribe : https://launchpad.net/~ffc > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~ffc Post to : ffc@lists.launchpad.net Unsubscribe : https://launchpad.net/~ffc More help : https://help.launchpad.net/ListHelp
