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write a C or Fortran program that sends a token in a ring for an arbitrary number of nodes: Create a directory in your h...

write a C or Fortran program that sends a token in a ring for an arbitrary number of nodes:

Create a directory in your home directory titled exactly PA1. Make sure you have ALL code located in this directory. 4. Write a makefile that will compile your code. 5. Use MPI to send a token in a ring for any number of nodes 6. Verify that your code is working correctly. 7

Write a C program that sends a token in a ring for an arbitrary number of nodes (MPI). Start by sending a single value around the ring and confirm that your program is working correctly. Try sending a larger structure, like an array, and time how long it takes to travel between nodes. The size of the array should be large, ~1GB. Use this information to compute the bandwidth of the network. After you have the token ring working, write a similar code that ping pongs between each rank and rank 0. For example, send data from 0 to 1 then back to 0, then 0 to 2 and back to 0, etc. The code will be very similar.

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