1.2. Software Needed

• python 3.6 or higher

• mpi4py package

• mpich or openmpi library

• (optional for more advanced examples) python numpy package

1.2.1. Installation on various systems

Installing these libraries on different operating systems is specific to each OS. There are quite a few references available for doing this.

The Raspberry Pi cluster images provided by the CSinParallel group already have everything you need installed, including the following code examples that we describe in detail in the following chapters.

1.3. The code for the examples

The code is part of a Github repo containing small examples of parallel programming patterns initially started by Joel Adams of Calvin University.

This book presents each of the examples found in the folder in this repo called patternlets/mpi4py. You should read about each one and then try it on your system where you have the above mentioned software packages installed.

1.4. Navigate to the code examples

On the system where you have the code installed, you should use a terminal to navigate to the folder called patternlets/mpi4py. On the Raspberry Pi cluster based on the images created by the CSinParallel group, the command is:

cd CSinParallel/patternlets/mpi4py

From here, you can run each of the examples as shown in the following pages of this book. (Use arrows in lower right and left to navigate back and forth.)

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