Hi I am using mpiblast version 1.1.1. i am facing this problem while trying to run the program. Fatal Error: fragment_list.cpp(addFragment): Unable to open file ----------------------------------------------------------------------------- One of the processes started by mpirun has exited with a nonzero exit code. This typically indicates that the process finished in error. If your process did not finish in error, be sure to include a "return 0" or "exit(0)" in your C code before exiting the application. PID 14197 failed on node n1 (10.0.0.2) with exit status 1. ----------------------------------------------------------------------------- 1 63.1738 Bailing out with signal -1 0 63.2313 Bailing out with signal 15 4 63.3775 Bailing out with signal -1 The same sequence when run with blastall i do get the result. this problem is with only mpi-blast. i would be thankful to those who can help me out in this aspect. thanking you..