Paul, My ldimt is 3 and the default values are used for the other parameters : ldimt1 = ldimt+1; ldimt3=ldimt+3 . . Regards Shriram -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/nek5000-users/attachments/20100909/5f94bf34/attachment.html>