Sherpa+OpenLoops
OpenLoops Installation:
NOTES: version 1.X.X is recommended, otherwise the patching step may not succeed.
Download OpenLoops from here
> tar -zxvf OpenLoops-1.X.X.tar.gz
> cd OpenLoops-1.X.X
> ./scons
# Then copy openloops.cfg into OpenLoops installation top directory(ie.~/OpenLoops.1.X.X)
# do not install any other OpenLoops process libraries!
> ./openloops libinstall ggww2,ggh2tt,gghtt compile_extra=1
> ./scons -c clean=procs
# change to directory ABOVE OpenLoops top directory, then create a folder(eg.named instructions)
and copy openloops.patch into it.
> patch -p0 < ~/instructions/openloops.patch |& tee openloops.patch.output
> cd OpenLoops
> ./scons auto=ggww2,ggh2tt,gghtt generator=0
LHAPDF Installation:
- Download LHAPDF
> tar xf LHAPDF-6.X.X.tar.gz
> cd LHAPDF-6.X.X
> ./configure
> make
> make install
- Install PDF sets (PDF4LHC15_nlo_mc)
Download from here
PDF sets (each of which is stored in a filesystem directory) should usually be installed in the $~/share/LHAPDF/ directory (i.e. the PDF dirs are at the same level as the global lhapdf.conf file).
To make use of PDF sets installed in other places, those search paths should be listed in the LHAPDF_DATA_PATH environment variable.
> export LHAPDF_DATA_PATH=$LHAPDF_DATA_PATH$:/path/to/the/PDFsets/
Sherpa Installation:
Download Sherpa from here
> tar -zxvf SHERPA-MC-2.2.5.tar.gz
> cd SHERPA-MC-2.2.5
> ./configure --enable-lhapdf=/path/to/lhapdf --enable-openloops=/path/to/openloops
> make
> make install