The Parallel Virtual Machine (PVM), an integrated framework for heterogeneous network computing, lets scientists exploit collections of networked machines when carrying out complex scientiic computations. Under PVM, a user-deened grouping of serial, parallel, and vector computers appears as one large distributed-memory machine. Connguring a personal parallel virtual computer involves simply lis...

Monitoring tools are fundamental components of a development environment as they provide basic support for performance evaluation, debugging, and program visualization. We describe our experiments with several monitoring tools for PVM, namely XPVM, developed at ORNL, Tape/PVM, developed at IMAG Lab, and DAMS, developed at UNL. These tools are compared and their use is described to support instr...

This paper describes an approach to supporting efcient processor virtualization and dynamic load balancing for message-based, parallel programs. Specifically, a user-level process package (UPVM) for SPMD-style PVM applications is presented. UPVM supports light-weight virtual processors that are transparently and independently migratable. It also implements a source-code compatible PVM interface...

With the introduction of high-performance Myrinet interconnection technology, building PVM on top of Myrinet has been a popular tread to improve its communication performance. There are generally two approaches to improve the efficiency of PVM: one approach is to emulate TCP/IP interface in low-level messaging layers, and base PVM on the new TCP/IP stack. The other approach is to redesign and o...

During invasion of an erythrocyte by a malaria merozoite, an indentation develops in the erythrocyte surface at the point of contact between the two cells. This indentation deepens as invasion progresses, until the merozoite is completely surrounded by a membrane known as the parasitophorous vacuole membrane (PVM). We incorporated fluorescent lipophilic probes and phospholipid analogs into the ...

Xab (X-window Analysis and deBugging) is a tool for run time monitoring of PVM (Parallel Virtual Machine) programs. PVM supports the programming of a network of heterogeneous computers as a single parallel computer. Using Xab, PVM programs can easily be instrumented and monitored. Xab uses PVM to monitor PVM programs. This makes Xab very portable but it leads to interesting issues of how to mak...