quantum-espresso/FFTXlib

This library provides a Testing and Timing code
to asses the performance of your FFT, estimate the
scalability and the size of your simulation.

To compile the test program, once you have properly
configure QE, go inside the directory FFTXlib and
type:
	make TEST

Then you can run your FFT tests using command like:

	mpirun -np 4 ./fft_test.x -ecutwfc 80 -alat 20  -nbnd 128 -ntg 4

or, in case of serial build

	./fft_test.x -ecutwfc 80 -alat 20  -nbnd 128 -ntg 4


Command line arguments:
-ecutwfc  Plane wave energy cut off
-alat     Lattice parameter
-nbnd     Number of bands (fft cycles)
-ntg      Number of task groups