Experiments were conducted at NASA Ames Research Center t o define multitasking software requirements for multiple-instruction, multiple-data stream (MIMD) computer architectures. The focus was on specifying solutions for algorithms in the field of computational fluid dynamics (CFD). The program objectives were to allow researchers t o .produce useable parallel application software as soon as p...

Experiments were conducted at NASA Ames Research Center t o define multitasking software requirements for multiple-instruction, multiple-data stream (MIMD) computer architectures. The focus was on specifying solutions for algorithms in the field of computational fluid dynamics (CFD). The program objectives were to allow researchers t o .produce useable parallel application software as soon as p...

In this paper, we propose a microprocessor architecture which e ciently utilizes nextgeneration semiconductor technology. While the technology makes it possible to integrate a lot of functional units on a single chip, contemporary microprocessors can not exploit much instruction level parallelism so that the units are wasted. Our proposal based on Simultaneous Multi-Threading (SMT) increases th...

In recent years parallel architectures have rapidly evolved to solve increasingly large problems, mainly because single processor based systems have reached the limit of their physical capacity. The end of 90’s has seen the growth and evolution of parallel architectures towards a cluster of multiprocessors owing to scaling problems with shared memory machines. The efficient use of such parallel...

Our goal is to apply the software engineering advantages of object-oriented programming to the raw power of massively parallel architectures. To do this we have constructed a hierarchy of C++ classes to support the data-parallel paradigm. Feasibility studies and initial coding can be supported by any serial machine that has a C++ compiler. Parallel execution requires an extended Cfront, which u...

References [1] Patrice Quinton and Yves Robert. Algorithmes et architectures systoliques. Etudes et Recherches en Informatique. Masson, 1989. English translation: Systolic algorithms and architectures, Prentice Hall (1991). [2] Yves Robert. The impact of vector and parallel architectures on the Gaussian elimination algorithm. Manchester University Press and John Wiley, 1991. [3] Luc Bougé, Clai...

SMP, MPP, clustered SMP, NUMA, data parallelism, sharednothing and shared-everything architectures. Understanding these terms and concepts is critical to getting the best performance out of your data warehouse or data mart. It’s proven technology today to combine dozens or hundreds of CPUs to build a supercomputer to host terabyte-class data warehouses and data marts hundreds of gigabytes in si...

Realizzazione di modelli di varie architetture di calcolatori paralleli (di tipo SIMD, MIMD e ibridi) e loro validazione sperimentale To Floriana Acknowledgments I would like to thank my supervisor Prof. Giuseppe Serazzi for the inspiration , guidance, friendship ooered throughout my studies. I feel a special gratitude towards Peter King and Paolo Cremonesi for their important contribution to t...

This contribution describes a new class of arithmetic architectures for Galois fields GF (2k). The main applications of the architecture are public-key systems which are based on the discrete logarithm problem for elliptic curves. The architectures use a representation of the field GF (2k) as GF ((2n)m), where k = n · m. The approach explores bit parallel arithmetic in the subfield GF (2n), and...

The ALgorithms, Architectures and MOdels of computation (ALAMO) project at the University of Edinburgh aims to investigate the scalability and eeciency with which the Hierarchical PRAM model of parallel computation may be implemented on realistic parallel architectures. This investigation is being performed using a programming language H-FORK together with HASE, a tool for the hierarchical desi...