  Particle-Mesh (PM) codes are still very useful tools for testing predictions
of cosmological models in cases when extra high resolution is not very
important. We release for public use a cosmological PM N-body code. We provide
a complete package of routines needed to set initial conditions, to run the
code, and to analyze the results. The package allows you to simulate models
with numerous combinations of parameters: open/flat/closed background, with or
without the cosmological constant, different values of the Hubble constant,
with or without hot neutrinos, tilted or non-tilted initial spectra, different
amount of baryons. Routines are included to measure the power spectrum and the
density distribution function in your simulations, and a bound-density-maxima
code for halo finding. We also provide results of test runs. A simulation with
256^3 mesh and 128^3 particles can be done in a couple of days on a typical
workstation (70Mb of RAM are needed). To run simulations with 800^3 mesh and
256^3 particles one needs a computer with 1Gb memory and 1Gb disk space. The
code has been successfully tested on an HP workstation and on a Sun workstation
running Solaris. Most of the files (not tests) can be obtained from
ftp://astro.nmsu.edu/pub/aklypin/PMCODE The package can be downloaded from
http://astro.nmsu.edu/~aklypin/PM/pmcode/index.html We provide this tool as a
service to the astronomical community, but we cannot guarantee results or
publications.
