Dear sir/madam Hello. I am running Ubuntu 12.0.4 LTS (my computer is dual boot with win XP SP3 and ubuntu). I can swear that I have run the example 'cpi' in the package 'mpich-3.0.4'. but now, see the result of executting soheil@soheil-desktop:~/mpich-3.0.4$ mpiexec -n 4 ./examples.cpi

[proxy:0:0@soheil-desktop] HYDU_create_process (./utils/launch/launch.c:75): execvp error on file ./examples.cpi (No such file or directory) [proxy:0:0@soheil-desktop] HYDU_create_process (./utils/launch/launch.c:75): execvp error on file ./examples.cpi (No such file or directory) [proxy:0:0@soheil-desktop] HYDU_create_process (./utils/launch/launch.c:75): execvp error on file ./examples.cpi (No such file or directory) [proxy:0:0@soheil-desktop] HYDU_create_process (./utils/launch/launch.c:75): execvp error on file ./examples.cpi (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

=================================================================================== soheil@soheil-desktop:~/mpich-3.0.4$

Also, 'whiching' mpicc and mpiexec both return /user/local/bin/mpicc and /user/local/bin/mpiexec, respectively. I need mpich on my ubuntu. Please help.