> I wrote a specific perl script to split a fasta database in files of > (aprox) equal size. On a similar topic you might want to check the simple example we have to run a file-based BioPipe pipeline of blast jobs following our HOW-TO, which can be easily modified to run other programs in a similar way and distribute jobs over a cluster without much overhead: http://www.biopipe.org/docs/howto/html/biopipe_introduction_tutorial/t1.html Elia ******************************** * http://www.fugu-sg.org/~elia * * tel: +65 6874 1467 * * mobile: +65 9030 7613 * * fax: +65 6779 1117 * ********************************