Dear Sir/Madam,
I am a research student on Grid Computing. I have written a parallel code by
using LAM 7.1.1 MPI 2, for the Tsunami model: absorbing boundary conditions,
fudge of problem with shallow sea, using long wave theory. It is basically
under the partial differential equation. I have been using some constants
(ig=303, jg=313, igg=903 and jgg=1233) to declare some arrays for my coding,
as follows:
double z[igg][jgg];
double m[ig][jg], n[ig][jg];
double h[ig][jg], r1[ig][jg], r2[ig][jg], r3[ig][jg], r4[ig][jg], r5[ig][jg];
double r6[jg], c1[ig], c2[jg], c3[ig], c4[jg], v1[jg], v2[jg], v3[jg], v4
[jg], v5[jg];
I have run the code successfully with correct output when the values for
those constants are small. If I assign the above mentioned values, I have
problem!
#define ig 303
#define jg 313
#define igg 603 //903
#define jgg 900 //1233
OR
#define ig 150 //303
#define jg 150 //313
#define igg 903
#define jgg 1233
For the above situation, the code runs successfully with correct output.
But When I tried to run with the following needed values,
#define ig 303
#define jg 313
#define igg 903
#define jgg 1233, I got the following error message:
“It seems that [at least] one of the processes that was started with
mpirun did not invoke MPI_INIT before quitting (it is possible that
more than one process did not invoke MPI_INIT -- mpirun was only
notified of the first one, which was on node n0).”
“mpirun can *only* be used with MPI programs (i.e., programs that
invoke MPI_INIT and MPI_FINALIZE). You can use the "lamexec" program
to run non-MPI programs over the lambooted nodes.”
Could you please give some idea to solve this problem. I hope that I will
correct my problem through your guidance.
Thanking you.
Yours truly,
Ganeshamoorthy
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