pfft
pfft copied to clipboard
mpip
Parallel fast Fourier transforms
Is it possible to plan for 1d transforms with pfft with size-1 communicator? I am seeing a divide by zero error in pfft_local_size_dft functions if I pass in a procmesh...
The attached program for 2D c2c transform with a 1D parallel decomposition crashes. Encountered on several computers and slightly different versions of PFFT. Last test done with 1.0.6-alpha. In this...
The local_start of an empty rank is always set to 0. This is causes unnecessary branching in downstream code. The logical model is simpler if we just think of these...
The next generation of Intel will have something like 70+ cores (Knight Landing); mass deployment to major computing facilities will be next year. It may be a good case if...
This is a work in progress. To build, install python, then easy_install [--user] sphinx make -f Makefile-sphinx html latexpdf The document can be found at _build/html/ and _build/latex/ if ghp-import...
If I use the patched version of FFTW3 directly, I get this error with a r2c in place transformation: PMPI_Alltoall(925): Buffers must not be aliased. Consider using MPI_IN_PLACE or setting...
- "set skip_trafos[t]=1 if the t-th serial transformation should be computed, otherwise set skip_trafos[t]=0" is the wrong way around - for 3d-FFT with 3d decomposition skip_trafos is of length rnk_pm...
The current manual is written strictly in Latex, and it may be hard to compile it to HTML pages. HTML documentation is easier to access than PDF documentation, because 1)...
This is a brief version of r2c /c2r benchmark program. There are issues. But I can already observe with a 384x384x384 mesh pfft is slower than fftw running on a...
In place transform fails on edison.nersc.gov, with intel 14.0.2 20140120. I'll look deeper into this. Can it be a problem with FFTW ? --since the domain decomposition is 1d in...