NAS Fast Fourier Transform (pdefft)

Contained in this directory are source code and makefile for the PDEFFT bench-
mark from the NAS Parallel Benchmarks. This program only runs on 32, 64 or 128
nodes. When 64 or 128 nodes are used, the standard problem of size 256x256x128
is run. With 32 nodes, a reduced problem of dimension 128x128x128 is run.
