I think the error description itself it pretty accurate. MPICH can’t find the executable in the location you specified. You need to make sure that the executable is in the correct place. On Nov 26, 2014, at 1:51 AM, نازنین <[email protected]<mailto:[email protected]>> wrote: hi i am using mpich 3.0.4 and it is my first time running it and i do my run like : mpirun -np 2 ./Projects/g/swan_only.in<http://swan_only.in/> and i receive this error . will u please help me how to solve this error? [proxy:0:0@nazanin-VirtualBox] HYDU_create_process (./utils/launch/launch.c:75): execvp error on file ./Projects/g/swan_only.in<http://swan_only.in/> (No such file or directory) =================================================================================== = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES = EXIT CODE: 255 = CLEANING UP REMAINING PROCESSES = YOU CAN IGNORE THE BELOW CLEANUP MESSAGES =================================================================================== _______________________________________________ discuss mailing list [email protected]<mailto:[email protected]> To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss