pqR - a pretty quick version of R
pqR is a new version of the R interpreter. It is based on R-2.15.0, distributed by the R Core Team (at r-project.org), but improves on it in many ways, mostly ways that speed it up, but also by implementing some new features and fixing some bugs.
One notable improvement is that pqR is able to do some numeric computations in parallel with each other, and with other operations of the interpreter, on systems with multiple processors or processor cores.
Features of the current stable pqR release of 2014-06-19 are described in the NEWS file (which is also included in the distribution below). This release, and the previous one, are maintenance releases, with bug fixes, changes for compatibility with packages, additional correctness tests, and documentation improvements. There are no new features, and no significant changes in performance. The NEWS file also has notes on the performance improvements in earlier releases. Additional performance improvements are planned for the next release.
To install pqR on a Linux/Unix system, download this gzipped tar file - pqR-2014-06-19.tar.gz - and unpack it with the "gunzip" and "tar" commands (many "tar" programs will do the gunzip automatically). Configuration, compilation, and installation can then be done in the same way as for R-2.15.0, but there are some additional options for pqR. Refer to the file `INSTALL' for the installation instructions, which have been expanded to be more detailed than in R-2.15.0.
Installation on a Mac OS X system is possible, but is recommended only for those who are experienced in installing R from source.
Trying to install pqR on a Windows system is not currently recommended, except for those who are experienced and adventurous (some success on Windows has been reported, but tweaks may be required that aren't yet all in the current version).
For more information on pqR and R in general, see the following manuals, which have been updated where required with information on pqR:
The pqR issues page has reports of bugs and other issues. Please report bugs you find there.
The pqR wiki has additional current information on pqR. This includes information on systems on which pqR has been tested, and packages tested with pqR.
A repository of 3438 packages known to work with pqR (and with each other) is available at ftp://price.utstat.utoronto.ca. It may be used as the repository when installing packages as follows:
See the pqR wiki for more information on this repository.
install.packages (vector-of-package-names, repos="ftp://price.utstat.utoronto.ca")
My blog, at radfordneal.wordpress.com, has a series of posts discussing pqR, as follows (most recent first):
Some of these posts refer to my set of speed tests for R.
pqR-2013-06-20 (first publicised release)
The git repository for the source code and development history of pqR is at http://github.com/radfordneal/pqR. The current release is on branch Release-2014-06-19. See the MODS file in that branch (or mods directory in development branches) for information on how branches in the git repository are organized. These branches also document how pqR differs from R-2.15.0.
There is a new test release available, pqR-2014-09-09.tar.gz, which may become a new general release if no serious problems are found.