Hi Chris: Large file support comes from a variety of switches, and your memory is almost correct... Try: -D__USE_FILE_OFFSET64 -D__USE_LARGEFILE64 Also, I have found significant (negative) issues in dealing with large files on non-XFS file systems. On ext2/3 or reiserfs, these utilities (even properly compiled) would fail with a File Too Large error (as seen in strace). Identical binaries work fine under XFS on the same machine. Weird. Joe ps: we opened up biodevelopers list (cc:ed for good measure) just for these discussions :) On Wed, 2002-05-08 at 15:43, Chris Dagdigian wrote: > > Hey folks, > > Hopefully this is a trivial question for someone on this list.. > > Support for large files has been in modern kernels and filesystems for a > while now. What I constantly run into though are programs that bomb out > when faced with large files. Particularly when I'm trying to build large > blast databases :) > > I'm seeing this right now with RedHat 7.2 -- the /bin/zcat program will > dump core if you try to get it to process the latest nonredundant 'nt.Z' > database from the NCBI. 'uncompress' and '/bin/cat' work just fine. > > The easy solution is just to recompile the programs as you discover them > to enable large file support. I did this all the time back at the prior > job. > > My problem is that despite a quick google search and trawl through my > own notes I can't remember the specific compiler arguments that you need > to pass through make to enable largefile support on RH linux systems. It > was something really simple like "-D64_BIT_OFFSET -DENABLE_LARGE_FILES" > > Can anyone help jog my memory? I want to start collecting .spec files > for the various problematic utilities so I can roll my own RPMs whenever > I need them on a project. > > Thanks! > -Chris > > > -- > Chris Dagdigian, <dag@sonsorol.org> > Independent life science IT & research computing consulting > Office: 617-666-6454, Mobile: 617-877-5498, Fax: 425-699-0193 > Work: http://BioTeam.net PGP KeyID: 83D4310E Yahoo IM: craffi > > _______________________________________________ > Bioclusters maillist - Bioclusters@bioinformatics.org > http://bioinformatics.org/mailman/listinfo/bioclusters -- Joseph Landman, Ph.D. Senior Scientist, MSC Software High Performance Computing email : joe.landman@mscsoftware.com messaging : page_joe@mschpc.dtw.macsch.com Main office : +1 248 208 3312 Cell phone : +1 734 612 4615 Fax : +1 714 784 3774