The error happens when you try to open the "help"-files, i.e. unit 31.
a) Is this a "regular lapw2 run", without "-help_files" switch in x lapw2 b) Check your lapw2.def file: It must not contain any line with unit 31. If it does NOT contain unit 31, the program MUST NOT try to open unit 31. c) It looks as if you are still trying to open unit 31 with a fname which is a directory name instead of a filename. In l2main.F you may find the following lines: if(helpfiles) then close(31) call open_helpfile(fnamehelp,jatom & ,fnamehelp2) open(31,file=fnamehelp2,status='unknown',form='formatted') endif Put some statement just before the open line: print*, 'helpfiles',helpfiles, fnamehelp,fnamehelp2 Actually, it should NOT print anything, because it should not try to open the file. John Appleton schrieb: > Dear Users, > I'm having a hard time figuring out why WIEN2k 08 > runs fine in parallel a shared architecture but > lapw2 fails for parallel claculations on a cluster. > > I get the following error for lapw2 per k-point > > forrtl: Is a directory > forrtl: severe (30): open failure, unit 31, file > /net/cluster/app/w2k08_test1/ > Image PC Routine Line Source > lapw2 0000000000681C9B Unknown Unknown Unknown > lapw2 0000000000680062 Unknown Unknown Unknown > lapw2 0000000000655140 Unknown Unknown Unknown > lapw2 000000000062A027 Unknown Unknown Unknown > lapw2 0000000000629C90 Unknown Unknown Unknown > lapw2 000000000062E986 Unknown Unknown Unknown > lapw2 0000000000439BCE Unknown Unknown Unknown > lapw2 0000000000449F28 Unknown Unknown Unknown > lapw2 00000000004061AA Unknown Unknown Unknown > libc.so.6 00000039C631C4BB Unknown Unknown Unknown > lapw2 00000000004060EA Unknown Unknown Unknown > > WIEN2k 07 runs fine. I used the same compiler and library options > for both 07 and 08. Can anyone help? > Thank you > > > > ------------------------------------------------------------------------ > > _______________________________________________ > Wien mailing list > Wien at zeus.theochem.tuwien.ac.at > http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien -- P.Blaha -------------------------------------------------------------------------- Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna Phone: +43-1-58801-15671 FAX: +43-1-58801-15698 Email: blaha at theochem.tuwien.ac.at WWW: http://info.tuwien.ac.at/theochem/ --------------------------------------------------------------------------