This paper describes current activities of the MPI-2 Forum. The MPI-2 Forum is a group of parallel computer vendors, library writers, and application specialists working together to de ne a set of extensions to MPI (Message Passing Interface). MPI was de ned by the same process and now has many implementations, both vendor-proprietary and publicly available, for a wide variety of parallel compu...

In the Ensemble methodology message passing applications are built from separate modular components. Processes spawned from modular components specify open communication interfaces (point-point or collective), which are bound at run time according to application composition directives. We give an overview of the concepts and tools. We present and compare the design of modular PVM and MPI compon...

In SMP clusters it is not always convenient to switch from pure message-passing code to hybrid software designs that exploit shared memory. This paper tackles the problem of restructuring an existing MPI code through the insertion of OpenMP directives. The choice of the best code is carried out with a performance-oriented approach, predicting the effect of application hybridization in the MetaP...

A capillary plasma z-pinch as an alternative active medium of soft X-Ray lasers was studied experimentally and theoretically. The theoretical analysis was based on the self consistent solution of the so called “snow plow” model. The dynamics of pinched plasma is determined by the capillary parameters and by the time dependence of electrical current passing through it. The current time dependenc...

in this paper, construction properties of branches in the root locus of a positive feedback system whose loop transfer function is not strictly proper have been investigated. we have introduced and proved the formulations for calculating the number of branches passing through infinity, point of intersection of the asymptotes on the real axis, and angle of these asymptotes with positive directio...

Passing underground trains induce vibrations transmitted to the ground surface and the nearby structures. Ordinarily, these vibrations do not result in structural damage but can harm nonstructural elements and disturb the occupants. These effects are more pronounced when evaluating buildings like hospitals, laboratories, museums, etc., and their assessment is an important design need. To respon...

A sequential three-dimensional hybrid molecular dynamics (MD)/finite-element (FE) code to perform continuum and atomistic multi-scale modeling and computation, has been parallelized using the Message Passing Interface (MPI) library. A master-slave divide-and-conquer approach, emphasizing the functionality and robustness of the code, is implemented through loop parallelism and has reduced execut...

This article describes the ongoing work of real-time message passing interface (MPI) standardization. Real-time MPI (MPI/RT) provides a consistent set of extensions and, in some cases, restrictions to the high-performance computing Message Passing Interface Standard, emphasizing changes that enable and support real-time communication and are supportable on embedded and other real-time systems.