LPVM (Lightweight-process PVM) system is an experimental PVM version which supports the use of lightweight-process or threads as the basic unit of parallelism. It was designed to study potential performance improvements and implementation issues required by multithreaded message-passing systems. The current version of LPVM was implemented on SMPs using the native threads and is designed to be t...

Concurrent computing environments based on loosely coupled networks have proven effective as resources for multiprocessing. Experiences with and enhancements to PVM (Parallel Virtual Machine) are described in this paper. PVM is a software system that allows the utilization of a heterogeneous network of parallel and serial computers as a single computational resource. This report also describes ...

PVM and MPI have often been compared regarding their functionality and performance from the users' point of view. In this paper , however, we will present some comparison from a tool developer's point of view. We will show how a supporting infrastructure { the OMIS compliant monitoring system OCM { can be implemented for both PVM and MPI. Thus, we will put light onto those features of PVM and M...

The Parallel Virtual Machine (PVM) message passing system developed at Oak Ridge National Laboratories has gained widespread acceptance and usage in the parallel programming community. This paper describes the results of performance tests of PVM in a switched FDDI heterogeneous distributed computing environment. We aim to provide insight into how parallel programs, particularly those employing ...

This paper describes a new implementation of the PVM message-passing system that is optimised for operation on multiprocessor and clustered Digital Alpha UNIX machines, while still allowing interoperabil-ity with other implementations of PVM and providing a fully-compatible PVM API. Initial performance results are detailed which show that hitherto supercomputer-class message-passing performance...

PVM and MPI, two systems for programming clusters, are often compared. Each system has its unique strengths and this will remain so into the foreseeable future. This paper compares PVM and MPI features, pointing out the situations where one may be favored over the other; it explains the differences between these systems and the reasons for such differences. PVM – Parallel Virtual Machine; MPI –...

In this paper we present Phosphorus, a system that can be used together with PVM to provide PVM users with the opportunity to use shared variables.

Tissue particles from a wide variety of animal tissues possess the capacity to combine with PVM. Various adsorbents also combine with the virus. Elution of PVM from combination with either tissue particles or adsorbents can be achieved by appropriately altering the ionic environment. Influenza viruses also are adsorbed on and eluted from adsorbents under similar conditions. Reasons are presente...

Mice infected with coxsackievirus B1 Tucson (CVB1(T)) develop chronic, post-viral myopathy (PVM) with clinical manifestations of hind limb muscle weakness and myositis. The objective of the current study was to establish the genetic basis of myopathogenicity in CVB1(T). Using a reverse genetics approach, full attenuation of PVM could only be achieved by simultaneously mutating four sites locate...