[mpich-discuss] Fwd: Error MPICH

[Gus Correa]

Hi Jairo

Ricardo is right, there are many possible causes.
You need to send more information, otherwise it is hard to guess what is 
going on.
Here are a few questions.  Your answers may help.

1) Are you using MPICH in Linux or Windows?

2) What is your mpirun/mpiexec command line?

3) Do you use a 'machinefile'?  What is the content of your machinefile?

4) Does your 'programa' [I guess this is your executable] live in the 
Network File System [NFS]?

5) Does your home directory live also in the NFS?

6) Is your MPICH also installed in your NFS?
Or do you have a separate copy of MPICH installed on each cluster node?

7) What happens if you login to each of your cluster nodes: can you see 
'programa' there
in the expected directory [say, using the 'ls' command]?
If your cluster has only two nodes, Master, and Slave, testing this is 
really quick.
If you send the output of 'ls programa' on each node, this may help.

8) What happens if you use the full path name to 'programa' in your 
mpiexec command line?
Say, something like this:

mpiexec -f hostfile -np 2  /full/path/to/programa

where 'hostfile' has this content:

Master:1
Slave:1

I hope this helps,
Gus Correa

On 08/30/2012 03:30 PM, Ricardo Román Brenes wrote:
> well there's al ot of problems that could be causing this...
>
> are you sure the file exists? is it executable?
> is it in the same directory path in all the nodes?
> how are you running it?
> mpich in win or linux?
>
>
> On Thu, Aug 30, 2012 at 1:27 PM, JAIRO ALMEIDA 
> <dealmeida.jairo at gmail.com <mailto:dealmeida.jairo at gmail.com>> wrote:
>
>     Hi,
>
>     I'm studant and study distributed systems. When running a compiled
>     C program, introduced this error (problem with execution of
>     programa  on  Slave:  [Errno 2] No such file or directory).
>     The program is shared between cluster nodes by Network File
>     System. You can help me?
>
>     Thanks!
>
>     Att,
>     Jairo de Almeida
>     undergraduate research
>     Federal Institute of Science Education and Technology São Paulo
>
>
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