The nucleotide sequence of the M2 gene of pneumonia virus of mice (PVM) was determined. The sequence showed that the gene encoded a protein of 176 amino acids with a predicted molecular mass of 20165 Da from a major ORF, which is smaller than the equivalent proteins encoded by human, bovine and ovine respiratory syncytial (RS) viruses. The PVM M2 protein is conserved, having 41% similarity to t...

The paper describes a parallel program checkpointing mechanism and its potential application in Grid systems in order to migrate applications among Grid sites. The checkpointing mechanism can automatically (without user interaction) support generic PVM programs created by the PGRADE Grid programming environment. The developed checkpointing mechanism is general enough to be used by any Grid job ...

This paper describes research underway to deene and develop the next generation of PVM (Parallel Virtual Machine). Future versions of PVM will be modular and open so as to allow interoperability with other packages, such as distributed scheduling systems. We concentrate on one aspect of the work: providing virtualization of processors and transparent migration mechanisms within the message-pass...

Message passing libraries such as Parallel Virtual Machine (PVM) and Message Passing Interface (MPI) provide a common Application Programming Interface (API) to implement parallel programs across multiple computers. Such libraries provide a means to program a collection of normally independent computers to work cooperatively on a single computation. However, for programs written in C and Fortra...

PVM and MPI are often compared. These comparisons usually start with the un-spoken assumption that PVM and MPI represent diierent solutions to the same problem. In this paper we show that, in fact, the two systems often are solving diierent problems. In cases where the problems do match but the solutions chosen by PVM and MPI are diierent, we explain the reasons for the diierences. Usually such...

Infection with respiratory syncytial virus (RSV) in children can progress to respiratory distress and acute lung injury necessitating mechanical ventilation (MV). MV enhances apoptosis and inflammation in mice infected with pneumonia virus of mice (PVM), a mouse pneumovirus that has been used as a model for severe RSV infection in mice. We hypothesized that the Fas/Fas ligand (FasL) system, a d...

In this paper, the benefits of parallel computing using a workstation cluster are explored for satellite orbit prediction. Data and function decomposition techniques are used. Speedup and throughput are the performance metric studied. The software employed for parallelization was the Parallel Virtual Machine (PVM) developed by the Oak Ridge National Laboratory. PVM enables a network of heteroge...

As workstation clusters gain popularity as a parallel computing platform,there is an increasing need for performance tools that support these platforms. Performance prediction is important for performance analysis of scalable parallel applications. Although there are several performance tools available that work with PVM programs,none are capable of performance prediction. We have developed the...

In this paper the simulation and assessment tool CLUE is described. This tool is able to simulate the performance of parallel programs using the message passing library PVM for communication, run on arbitrary parallel m achines, including PC clusters. CLUE redirects calls to PVM to its own functions, providing an additional layer between an application and PVM. The simulation is driven by the a...