| dfft: Distributed FFT |
| |
| FFTW + 3-D to 1-D Data Redistribution |
| |
| This directory contains the implementation and tests for the FFTW MPI |
| transform, combined with a 1-d <--> 3-d data redistribution so that it |
| can be applied directly to problems requiring a 3-d data distribution |
| |
| Implementation: |
| distribution.c |
| distribution.h |
| |
| Tools: |
| fp.h |
| Floating point comparison functions. |
| |
| cycle.h |
| The cycle timer from FFTW, useful for comparative benchmarks. |
| |
| Tests: |
| |
| test-distribution |
| This test initializes the field to the value of its global |
| coordinate for thorough checking of the redistribution |
| functions. Checks that the data is correct are performed before |
| and after each data redistribution redistribution |
| |
| test-distribution-fft |
| As above but with a forward backward fft. |
| |
| test-delta-function |
| This test initializes the field to a delta function centered |
| and performs forward and backward transforms, checking the |
| data is correct before and after each data redistribution |
| or transform. |
| |
| test-timing |
| This test times the combined redistribution and transform. |
| |
| test-solver |
| A test stand-alone implementation of the Poisson solver. |
