[Beowulf] error while using mpirun

[richard.walsh at comcast.net]

Akshar bhosale wrote: 

>When i do: 
> 
>/usr/local/mpich-1.2.6/bin/mpicc -o test test.c ,i get test ;but when i do 
>/usr/local/mpich-1.2.6/bin/mpirun -np 4 test,i get 
> 
>p0_31341: p4_error: Path to program is invalid while starting 
>/home/npsf/last with rsh on dragon: -1 
>p4_error: latest msg from perror: No such file or directory error. 
> 
>please suggest the solution. 


Looks like the directory that your MPI executable 'test' is in is: 


/home/npsf/last 


Correct? This directory needs to be visible on each node used 
by MPI to run your program. You might also need to put a ./ in 
front of the name of the executable, as in ./test . You also need 
be able the 'rsh' to each of those nodes. Because you have not 
specified a 'machines' file, MPI is using the default file in the install 
tree which normally lists the nodes in simple sequence. Still, I 
think the problem option 1 or 2 above. 


rbw 
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