The Chroma Library for
The Chroma package supports data-parallel
lattice field theory and in particular lattice QCD. It uses the SciDAC
QDP++ data-parallel programming (in C++) that presents a single
high-level code image to the user, but can generate highly optimized
code for many architectural systems including single node
workstations, multi and many-core nodes, clusters of nodes via QMP, and classic vector computers.
Chroma source code is available via github. You
can also see the the
Git FAQ for instructions on downloading the code. Currently the following branches are availble:
- The master is the canonical stable branch
- The devel branch is the branch with the proposed changes for the next version
Previous versions can be found in the release
There is source code available via github
that support file manipulations of chroma output files.
What? No RPMS?
As it turned out the packaging of RPMs is not really as straightforward to automate as we'd like. Also there are worries about availability of shared libraries on some systems. Therefore we have currently suspended the rolling of RPM distributions
In order to build Chroma you'll need to have installed
Relevant source code links:
- SciDAC C++ data-parallel programming interface
- SciDAC message passing programming interface
Software - home page for software distributions
Links to tutorials are on the side-bar.
There is also a
collection of notes
in the source distribution.
Acknowledging Chroma: Must Cite Papers, Web-Sites
In order to give credit and recognition to those who have put humongous effort into writing software
for you, we require that if you use Chroma results in your papers you MUST cite the following und
er the appropriate circumstances:
- R. G. Edwards (LHPC Collaboration), B. Joó (UKQCD Collaboration),
"The Chroma Software System for Lattice QCD",
Proceedings of the 22nd International Symposium for Lattice Field Theory (Lattice2004),
Nucl. Phys B1 40 (Proc. Suppl) p832, 2005.
- If using SSE Optimised Dslash code (Intel P4 and other SSE compliant hardware):
- If using output from the BAGEL assembly generator (IBM Power, UltraSPARC and Alpha
- If using the QUDA GPU Library with Chroma
- M. A. Clark, R. Babich, K. Barros, R. C. Brower, C. Rebbi,
Solving Lattice QCD systems of equations using mixed precision solvers on GPUs
This list may change as new citations may appear or preprints work their way through the publication
process. Please revisit this list to get the latest version for your paper before publishing.
Fun graphic showing locations of some of the Chroma users that we could
find. Hover over the points to see the locations. Please let us know of more such sites.