EUIm: A message passing library for the IBM power visualization system

The author describes ongoing work to port a message passing library standardized for existing distributed memory machines to shared memory architectures, termed EUIm. This research has practical value since applications primarily intended for distributed memory, EUI based message passing systems can now port to shared memory architectures, such as the IBM Power Visualization System (PVS). This implementation is shown to be efficient for message passing applications even when an application's performance is largely a function of message passing latency. The semantics of the software library is such that ports can be done with little or no modifications to the user's existing application. Additionally, the ability to migrate applications from one parallel architecture to another will provide convenience as well as portability.