Dear Michael,
I have posted MPI_Iprobe.cc and MPI_Probe.cc with info as last flag.
Please let me know if it helps in building other examples.
For the comunicator issue I am thinking on passing a simple string as
alternative comunicator and if nothing is provided by the user then
MPI_COMM_WORLD is the default value.
Thanks and bests
Riccardo
--- Sab 21/11/09, Michael Creel <michael.cr...@uab.es> ha scritto:
Da: Michael Creel <michael.cr...@uab.es>
Oggetto: Monte Carlo example for new MPI bindings
A: "Riccardo Corradini" <riccardocorrad...@yahoo.it>, "Jaroslav Hajek"
<high...@gmail.com>, "octave-forge list" <octave-dev@lists.sourceforge.net>
Data: Sabato 21 novembre 2009, 14:14
Hello all,
Attached are two files, montecarlo.m and mc_example.m that implement parallel
Monte Carlo simulation of a user defined function. The function just needs to
return a row vector, and montecarlo.m will stack the replications into a
matrix. This implementation is basic and illustrative. At
http://pareto.uab.es/mcreel/Econometrics/MyOctaveFiles/Econometrics/MonteCarlo/
and http://pareto.uab.es/mcreel/Econometrics/Examples/Parallel/montecarlo/
there is a more sophisticated version that uses MPITB.
The basic version is susceptible to the crash of a node, and will not balance
the load between nodes of different speed. To implement that, MPI_Iprobe would
be needed.
To use it, doe something like
mich...@tuolumne:~/Desktop/openmpi_ext/src$ mpirun -np 2 octave -q --eval
mc_example
Sending block to 0
I have sent 4
I have sent 15
I have sent 2
1.00000 0.96457 1.23784
1.00000 1.20805 1.19109
1.00000 1.21014 1.15861
1.00000 0.93194 0.83522
1.00000 0.73157 1.36160
0.00000 1.07361 0.96141
0.00000 1.32715 1.06895
0.00000 0.73529 0.94909
0.00000 1.24376 1.02082
0.00000 1.05802 1.20701
mich...@tuolumne:~/Desktop/openmpi_ext/src$
In that, the first column is the MPI rank of the node that generated the rest
of the row, which is the output of the function that is being simulated..
Cheers, Michael
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