The Parallel Virtual Machine (PVM) is a software tool for parallel networking of computers. It is designed to allow a network of heterogeneous machines to be used as a single distributed parallel processor.
... who are 65 years of age or older. The median age is 41 years. For every 100 females there are 98.0 males. For every 100 females age 18 and over, there are 96.5 ...