testfft3 runs and times ffts from md1xmd2xmd3 to nd1xnd2xnd3
by increasing dimensions together by multiplying by 2. (These
parameters are defined in parms.fh.) It performs a forward,
then an inverse fft, checking the infinity norm against a
small tolerance.

Output from a normal run is attached.


to make::  1) make peigs (for comm), libpfft.a
           2) run: make test

to run::  w/parallel command) cd tst; edit testfft3.p to
                              reflect your configuration.

          otherwise) use the method on hand for mpp


sample run output
-----------------

sounion163% parallel testfft3
 Creating: host=sounion, user=twclark,
           file=../testfft3, port=2578
  *** FFT Type: EMSL_FFT with TCG_PROCS and nproc =                     4
***
  8   8   8 fft wallclock time (sec):    4.57917
 16  16  16 fft wallclock time (sec):    4.48180
 32  32  32 fft wallclock time (sec):    4.73456