Difference between revisions of "Message Passing Interface (MPI)"
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= Overview = | = Overview = | ||
| + | Message Passing Interface (MPI) is a standardized and portable message-passing standard designed by a group of researchers from academia and industry to function on a wide variety of parallel computing architectures. | ||
= Installation = | = Installation = | ||
| + | == Debian based Operating Systems == | ||
| + | This has been tested on Raspbian. | ||
| − | + | <code>$ sudo apt-get install openmpi-common openmpi-bin libopenmpi-dev </code> | |
| − | |||
| − | + | = Compiling and Running = | |
| + | |||
| + | To compile (from command line / Bash), on most installations, you generally would use: | ||
| + | |||
| + | mpicc -o exename myfile.c # this would combile file myfile and the generated executable would be called exename | ||
| + | |||
| + | To start multiple instances of the program (as in the default number of nodes, which would be the number of cores your computer has) and to start running the program you would do: | ||
| + | |||
| + | mpirun ./exename # this is to execute the generated exename executable in the current directory | ||
| + | |||
| + | To start a particular number of instances, in this case 4 nodes, and to start running them you would use: | ||
| + | |||
| + | mpirun -n 4 ./exename # start exename with 4 nodes | ||
| + | |||
| + | |||
| + | = Tutorial = | ||
| + | See [https://computing.llnl.gov/tutorials/mpi/ this link] for usage notes. | ||
Latest revision as of 20:00, 17 March 2025
Contents
Overview[edit]
Message Passing Interface (MPI) is a standardized and portable message-passing standard designed by a group of researchers from academia and industry to function on a wide variety of parallel computing architectures.
Installation[edit]
Debian based Operating Systems[edit]
This has been tested on Raspbian.
$ sudo apt-get install openmpi-common openmpi-bin libopenmpi-dev
Compiling and Running[edit]
To compile (from command line / Bash), on most installations, you generally would use:
mpicc -o exename myfile.c # this would combile file myfile and the generated executable would be called exename
To start multiple instances of the program (as in the default number of nodes, which would be the number of cores your computer has) and to start running the program you would do:
mpirun ./exename # this is to execute the generated exename executable in the current directory
To start a particular number of instances, in this case 4 nodes, and to start running them you would use:
mpirun -n 4 ./exename # start exename with 4 nodes
Tutorial[edit]
See this link for usage notes.
