hello to all, i had installed mpiblast-1.2.1, in /usr/local. so mpiblast is in the masternode only and not on the other nodes. when i login to the other nodes, and check for mpiblast, it shows it is not existing. n0 is the master node. while mpirun: 4195 /usr/local/bin/mpiblast running on n0 (o) mpirun: cannot start /usr/local/bin/mpiblast on n1: No such file or directory. does i have to copy the fragments of the database into each node or i have to install mpiblast in shared storage directory. thanks in advance. ________________________________________________________________________ Yahoo! India Matrimony: Find your partner online. http://yahoo.shaadi.com/india-matrimony/