Message Passing Interface

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The Message Passing Interface (MPI) is a computer communications protocol. It is a de facto standard for communication among the nodes running a parallel program on a distributed memory system. MPI implementations consist of a library of routines that can be called from Fortran, C, C++ and Ada programs. The advantage of MPI over older message passing libraries is that it is both portable (because MPI has been implemented for almost every distributed memory architecture) and fast (because each implementation is optimized for the hardware on which it runs).

Contents

1 Example program
2 See also
3 External links
4 References

Example program

Here is "Hello World" in MPI. Actually we send a "hello" message to each processor, manipulate it trivially, send the results back to the main processor, and print the messages out.

/*
test of MPI
*/
#include 
#include 
#include 

int main(int argc, char *argv[])

for(i=1;i

MPI_Finalize();
return 0;
}

External links

References

This article was originally based on material from the Free On-line Dictionary of Computing, which is [Foldoc licenselicensed] under the GFDL.

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Message Passing Interface

Example program

See also

External links

References