User Tools

Site Tools


difx:fxkernel-bench

This is an old revision of the document!


Table of Contents

FxKernel

FxKernel is a stand alone FX correlator based on the DIFX design but with no MPI dependencies and designed for simplicity. It is not intended for production correlation, just a simple reference design and for benchmarking.

Installation

Like DiFX, FxKernel depends on IPP, which must be installed.

FxKernel is part of the gCorr demonstration GPU cross correlator. Download from github:

> git clone https://github.com/XhrisPhillips/gcorr.git
> cd fxkernel

If you have an existing DIFX installation and PKG_CONFIG_PATH points to ipp.pc, you can skip the next step

 ./genipppc 

If IPP is not installed in /opt/intel, add the “INTEL” path as an argument to genipppc or set $IPPROOT to point to this path.

Copy the generated ipp.pc file to a directory pointed to by $PKG_CONFIG_PATH

To build FxKernel

autoreconf --install
./configure
make

Benchmarks

cd bench
./threads.sh

(Note, if hyperthreading is enabled, consider first editing threads.sh and setting max threads explicitly).

Note # threads with maximum data rate - probably when #threads equals number of real cores.

Edit channels.sh and set NTHREADto equal best number of threads.

./channels.sh

Note # channels with maximum data rate, probably 256.

Edit antennas.sh, set NTHREAD as appropriate and NCHAN if necessary

./antenna.sh
difx/fxkernel-bench.1541406342.txt.gz · Last modified: 2018/11/05 19:25 by chrisphillips