Dear LAM list
I would like check and test the performance of my cluster. Therfore I would
like to make use of MPE, but I could not get a binary which is working
properly. I guess that I did some wrong installation of mpich but I could not
figure out what I was doing wrong. Here the results I get:
I used the cpi.c code which comes along with mpich. I compiled this code first
with
mpicc -c checkperf.c
mpicc -o _checkperf checkperf.o -L/usr/local/mpich/lib -llmpe -lmpe -lm
The command "which mpicc" tells me, that mpicc is /usr/local/bin/mpicc.
When I run this program on a single machine I recieve the message:
-----------------------------------------------------------------------------
One of the processes started by mpirun has exited with a nonzero exit
code. This typically indicates that the process finished in error.
If your process did not finish in error, be sure to include a "return
0" or "exit(0)" in your C code before exiting the application.
PID 3497 failed on node n0 (192.1.1.2) due to signal 11.
-----------------------------------------------------------------------------
But when I compile the programm with
/usr/local/mpich/bin/mpicc -c checkperf.c
/usr/local/mpich/bin/mpicc -o _checkperf checkperf.o -L/usr/local/mpich/lib
-llmpe -lmpe -lm
i.e. the mpicc command is located at an other place, the program run gives:
Process 0 on shaw.music.home
pi is approximately 3.1416009869231254, Error is 0.0000083333333323
wall clock time = 0.000700
Writing logfile....
Finished writing logfile.
-----------------------------------------------------------------------------
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.
-----------------------------------------------------------------------------
I installed mpich-1.2.6 in the following way:
cd /usr/local
gzip -d mpchi-1.2.6.tar.gz
tar -xvf mpchi-1.2.6.tar
cd mpchi-1.2.6
./configure --prefix=/usr/local/mpich
make
make install
Does anyone know, what I am doing wrong?
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