FFT Benchmarking Initiative
Innovative Computing Laboratory
University of Tennessee
The FFT Infrastructure Benchmark for Exascale Research (FIBER) provides a framework for Fast Fourier Transform (FFT) benchmarks targeting exascale computing systems. It evaluates performance and scalability of distributed FFTs on different architectures. Furthermore, it analyzes the effect on applications that directly depend on FFTs. It can also stress and test the overall network of a supercomputer, give an indication on bisection bandwidth, noise, and other network and MPI collectives limitations that are of interest to many other ECP applications.
The current harness software allows to compute 3-D complex-to-complex and real-to-complex FFTs.
Create a folder; e.g., Benchmarks_FFT, and install the FFT libraries to benchmark.
-- Benchmarks_FFT
|-- heFFTe
|-- fftMPI
|-- AccFFT
|-- P3DFFT
|-- FFTE
|-- SWFFT
|-- 2DECOMP&FFT
|-- nb3dFFT
|-- FFTW
Current libraries targeted by FIBER:
Next clone this repository and create build folder, and execute the cmake commands.
In the following example, we install FIBER with heFFTe and fftMPI backends:
mkdir build; cd $_
build/
cmake -DFIBER_FFT_LIB_DIRS="/home/Benchmarks_FFT/fftmpi/src;/home/heffte/build/lib"
-DFIBER_FFT_INCLUDE_DIRS="/home/Benchmarks_FFT/fftmpi/src;/home/heffte/build/include"
-DFIBER_ENABLE_HEFFTE=ON -DFIBER_ENABLE_FFTMPI=ON
-DMPI_DIR=/sw/openmpi/4.0.0/ ..
make -j
List the lib and include folders of libraries to test, respectively, in FIBER_FFT_LIB_DIRS and FIBER_FFT_INCLUDE_DIRS.
Run tests as follows:
cd build/benchmarks
mpirun -n 2 ./test3D_CPU_C2C <library>
mpirun -n 2 ./test3D_CPU_R2C <library>
where library has to be replaced by one of the nine available libraries, provided user has it installed.
Once a parallel FFT library has been correctly integrated to heFFTe, running these benchmarks should report a correct validation output.
- Installation and a Doxygen documentation will be available shortly.
For assistance with the FIBER project, email fiber@icl.utk.edu or start a GitHub issue.
Contributions are very welcome, please create a pull request.
- Visit the FIBER website for more information about the HeFFTe project.
- Visit the ECP website to find out more about the DOE Exascale Computing Initiative.
This research was supported by the United States Exascale Computing Project.
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