The size of many geospatial databases has grown exponentially in recent years. This increase in size brings with it an increased requirement for additional CPU and I/O resources to handle the querying and retrieval of this data. A number of proprietary systems could be ideally suited for such tasks, but are impractical in many situations because of their high cost. On the other hand, Beowulf cl...

We describe an approach to fast iterative reconstruction from fully three-dimensional (3D) PET data using a network of PentiumIII PCs configured as a Beowulf cluster. To facilitate the use of this system, we have developed a browser-based interface using Java. The system compresses PET data on the user's machine, sends these data over a network, and instructs the PC cluster to reconstruct the i...

1 Ph.D. Student, AIAA Student Member, Email: [email protected] 2 Senior Research Associate, AIAA Member, [email protected] Associate Professor, AIAA Member, Email: [email protected] ; http://141.217.13.61/ 4 Senior Scientist, AIAA Member, Email: [email protected] ABSTRACT In this paper, we report the experience of calculating three-dimensional detonations by the Space-...

Networks of personal computers (so called Beowulf systems) composed of fast PCs configured with large quantities of RAM and hard disk, and running the Linux operating system are becoming more and more attractive as cheap and efficient platforms for distributed applications. The main drawback of a standard Beowulf architecture is the poor performance of the conventional inter-process communicati...

This paper discusses the design of YapDss, an or-parallel Prolog system for distributed memory parallel machines, such as the Beowulf PC clusters. The system builds on the work of YapOr, an or-parallel system for shared memory machines, and uses the distributed stack splitting binding model to represent computation state and work sharing among the computational workers. A new variant scheme of ...

We propose ARGUS, a high density, low power supercomputer built from an IXIA network analyzer chassis and load modules. The prototype is a diskless MPP scalable to 128 processors in a single 9U chassis. The entire system has a footprint of 1/4 meter2 (2.5 ft2), a volume of 0.09 meter3 (3.3 ft3) and maximum power consumption of less than 2200 watts. We compare and contrast the characteristics of...

This paper details some of the basic issues that arise when designing a Beowulf cluster for particular types of scientific simulations. The general problems of interest are partial differential equations (PDEs). These equations describe natural phenomenon and can be numerically solved. Finite differencing is used to solve the system of equations. This method naturally delineates the problem int...