While MPI is the most common mechanism for expressing parallelism, MPI programs remain poorly integrated in Unix environments. We introduce MPISH2, an MPI process manager analogous to serial Unix shells. It provides better integration capabilities for MPI programs by providing a uniform execution mechanism for parallel and serial programs, exposing return codes and standard I/O stream information.

Today many high performance computers are collections of shared memory compute nodes with each compute node having one or more multi-core processors. When writing parallel programs for these machines, one can use pure MPI or various hybrid approaches using MPI and OpenMP. Since OpenMP threads are lighter weight than MPI processes, one would expect that hybrid approaches will achieve better perf...

The MPI Forum This paper presents an overview of mpi, a proposed standard message passing interface for MIMD distributed memory concurrent computers. The design of mpi has been a collective eeort involving researchers in the United States and Europe from many organizations and institutions. mpi includes point-to-point and collective communication routines, as well as support for process groups,...

Radiation controls the dynamics and energetics of many astrophysical environments. To capture coupling between radiation matter, however, is often a physically complex computationally expensive endeavour. We develop numerical tool to perform radiation-hydrodynamics simulations in various configurations at an affordable cost. build upon finite volume code MPI-AMRVAC solve equations hydrodynamics...

This paper investigates the performance of UNDP multidimensional poverty index (global MPI) and Millennium Development Goals (MDGs) indicators in impact evaluation SADA-Northern Ghana Village Project (MVP). We find that project had a limited on MDG yet large global MPI. assess robustness MVP MPI we this was largely driven by changes few indicators. conclude living standards, should be used with...

PURPOSE Magnetic particle imaging (MPI) is a new radiologic imaging modality. For the first time, a commercial preclinical scanner is installed. The goal of this study was to establish a workflow between MPI and magnetic resonance imaging (MRI) scanners for a complete in vivo examination of a mouse and to generate the first co-registered in vivo MR-MP images. MATERIALS AND METHODS The in vivo...

BACKGROUND American College of Cardiology/American Heart Association appropriate use criteria recommend performing stress myocardial perfusion imaging (MPI) for intermediate- to high-risk patients presenting with syncope but not for low-risk patients. However, there are limited data to support these recommendations. We investigated the yield of stress MPI for the evaluation of syncope in patien...