Here is a link that gives a couple of ways to make a ramdisk in OSX. http://www.macosxhints.com/article.php?story=20020530084607311 -- Michael D. Chute BSL-3 Lab Manager Naval Medical Research Center Biological Defense Research Directorate Room 1N29 503 Robert Grant Ave. Silver Spring, MD 20910 Voice:301-319-7529 Fax:301-319-7513 email: chutem@nmrc.navy.mil > From: Al Tucker <act@comm.rockefeller.edu> > Reply-To: <bioclusters@bioinformatics.org> > Date: Tue, 5 Oct 2004 16:30:31 -0400 > To: <bioclusters@bioinformatics.org> > Subject: Re: [Bioclusters] Xserve G5 memory > >> [I just finished composing this as Joe's post showed up] >> Under most modern operating systems, BLAST databases automatically >> get cached in memory by the OS as they are searched. The operating >> system typically uses all available memory (unused by currently >> active applications) to cache frequently used data from files on >> disk. > <snip> >> >> To the best of my knowledge, NCBI's blastall code uses memory-mapped >> I/O whenever possible. > > <snip> >> >> A quick hack to ensure the DB stays in memory would be creating a >> RAMdisk and copy the DB onto it. I think OS X supports RAMdisks.(?) > > I've been following this thread with interest. I can contribute this > - OS X doesn't have an inbuilt ramdisk option like Os 9 had, but > there are 2 programs I know of (but have not used) that you can make > a ramdisk with: Disk Velox > <http://www.versiontracker.com/dyn/moreinfo/macosx/24364> and Ram > Disk Creator <http://www.donelleschi.com/ramdiskcreator/> > > > - Al > _______________________________________________ > Bioclusters maillist - Bioclusters@bioinformatics.org > https://bioinformatics.org/mailman/listinfo/bioclusters