Readme File for Benchmark 4: 3-D FFT PDE

The source file is 'fftpde.f'.

The parameters N1, N2 and N3 in the paper correspond to the parameters
with the same names in a PARAMETER statement at the start of the main
program in the sample code file.  Do not change N1, N2 and N3
directly, but instead set M1, M2 and M3, which are the logarithms base
two of N1, N2 and N3.  In the sample code, M1, M2 and M3 are set to 6.
This corresponds to a problem of dimensions 64 x 64 x 64.  To run the
Class A problem, set M1 and M2 to 8 and M3 to 7.  To run the Class B
problem, set M1 to 9, and M2 and M3 to 8.  Once
M1, M2 and M3 have been set, MX must be set to MAX (M1, M2, M3).  A is
the multiplier of the random number generator and is set to 5^13.  S
is the initial seed of the random number generator and is set to
314159265.  AL is the value of alpha and is set to 10^(-6).  NT is the
number of iterations and is set to 6.

There is no input data file.

Three sample output files are included, 'fftpde.sample.out', 'fftpde.A.out',
and 'fftpde.B.out'.

For other specific information, see the comments in the source code.
