A small molecular dynamics program which, nonetheless, contains all th
e features typical for present-day general-purpose production codes, i
s presented. We describe its implementation both at the sequential and
the parallel level. A set of four standard benchmarks, deemed typical
for the application of molecular dynamics to realistic systems, has b
een devised and is discussed. The benchmarks have been run on a variet
y of sequential and parallel architectures and a number of results are
reported here. The code, both a sequential version and a PVM-based me
ssage-passing parallel version, and the set of benchmarks are publicly
available.