The attractiveness of visual programming stems in large part from the direct programmers interact with program elements as if they were real objects, since people deal better with the concrete objects than with the abstract. This paper describes a new graph based software visualization tool for parallel message-passing programming named Visper that combines the levels of abstraction at which me...

High-bandwidth, low-latency MPI implementations are of key importance for clustered, parallel computing machines. The performance of message-passing is based on the underlying network hardware, the network-interface architecture as well as the software design of the message-passing library and ultimately the parallel applications itself. This paper analyzes the application of the HTX-Board, a H...

Parallel Evolutionary algorithms have been developed to reduce the running time of serial Evolutionary algorithms. Two major paradigms for parallel programming, Message Passing and Shared Memory, are implemented and their performance observed. Message Passing Interface (MPI) and TreadMarks runtime libraries are chosen to implement parallel Evolutionary algorithms, based on a synchronous master-...

While there is growing interest in using Java for high-performance applications, many in the high-performance computing community do not believe that Java can match the performance of traditional native message passing environments. This paper discusses critical issues that must be addressed in the design of Java based message passing systems. EEcient handling of these issues allows Java-MPI ap...

Usage errors of the widely accepted Message-Passing Interface (MPI) are common and complicate the development process of parallel applications considerably. Some of these errors are hard to track, especially when they only occur in certain application runs or on certain platforms. Runtime correctness checking tools for MPI simplify the detection of these errors. However, they usually need the M...

| An industry lead eeort to create a protocol for the interoperation of implementations of the Message Passing Interface (MPI) has been ongoing since March of 1997. Meetings have been held several times per year with many implementors of MPI participating to help deene the Inter-operable MPI protocol (IMPI). This process has resulted in a simple protocol that can be incorporated into existing i...

The Message Passing Interface (MPI) is one of the most portable high-performance computing (HPC) programming models, with platform-optimized implementations typically delivered with new HPC systems. Therefore, for distributed services requiring portable, high-performance, user-level network access, MPI promises to be an attractive alternative to custom network portability layers, platform-speci...

The modeling and simulation efforts within Air Force Research Lab (AFRL) Sensors Directorate (SN) and Information Directorate (IF) have become increasingly complex. In order to develop, test, and analyze surveillance assets complex simulations and Matlab tools are developed to provide a better understanding of the environment. The increasing amount of primary and secondary data used to emulate ...

The emergence of cluster computing as a viable platform for high performance computing has been realized due to significant performance increases in commodity computing and networking hardware. In particular, relatively inexpensive programmable network interface cards (NICs), such as Myrinet (Boden et al., 1995), that are capable of delivering gigabit-per-second speeds, have allowed for much re...

The message passing interface (MPI) is a standard used by many scientific applications. It has the advantage of a smoother migration path for porting applications to the Grid. In this paper Grid-enabled tools and libraries for developing MPI applications are presented. The first is PACX-MPI, an implementation of the MPI standard optimized for Grid environments. The second is MARMOT, a tool that...