COMP/CS 705: Introduction to Parallel Computing (Spring, 2015)
HOMEWORK #2
POSTED: 09/06/17
DUE:    09/18/17
POINTS: 25
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Problem HW2.1:  3D Communicators 
  * checkout the comm.src and tools folders from the GIT repo at
      - https://bitbucket.org/account/user/comp705/projects/HW2
     - copy needed files to your own hw1 directory	
  * modify the communication routines to create 3D versions of 
     - mpi-cart-2d-get-nbrs.c
     - mpi-cart-2d-row.c
     - mpi-cart-2d-col.c
     -  What would you call the third dimension?
	 o row, col, aisles/story/page, floor, slice 
	 o nbr_i_lo/nbr_i_hi  or   nbrIlo, nbrJlo, nbrKlo?
	 o nbrFront, nbrBack, nbrTop,nbrBottom, ...
     - put code, results, etc.  into the bitbucket hw2 directory

  * write/summarize results into a short lab report and upload 
    to your branch.