[MPICH] help MPICH & matlab

[Ray Pelletier]

It has nothing to do with MPI.  There *is* an error in that Matlab code.

> A=1:100;
> B=A'+A;
??? Error using ==> plus
Matrix dimensions must agree.

-Ray

-----Original Message-----
From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of llwaeva at 21cn.com
Sent: Friday, September 23, 2005 2:45 AM
To: mpich-discuss at mcs.anl.gov
Subject: [MPICH] help MPICH & matlab


Hi there,
  I am new to MPICH. I read the document of MPICH and know that one can
spawn processes with mpiexec. I am running win2k and MPICH2 for windows.
I try to mpiexec a matlab which will run a simple code after
initialization

mpiexec -n 1 matlab -nojvm -nosplash /r test

where test(.m) is the matlab problem in which I have

A=1:100;
B=A'+A;

The code is so simple so everything is all right. However, if I modified
the code and add a plotting function like

A=1:100;
B=A'+A;
plot(A,B);

Although no error occurred, but the plotting function doesn't work!!! I
have also try other GUI program rather than matlab, all the GUI seems to
be banned! Would you please tell me the reason and how to solve it?

Next, I would like to ask something about MPI_Comm_spawn, I have write a
C program in which a new function called spawn is written to wrap
MPI_Comm_spawn. In matlab, I try to call my 'spawn' to spawn a new
process, but matlab will shutdown abnormally whenever spawn is called
!!!