Cobra: A CORBA-compliant programming environment for high-performance computing

Priol, Thierry; René, Christophe

doi:10.1007/bfb0057973

Cited by 27 publications

(13 citation statements)

References 4 publications

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“…However, its lack of support for the encapsulation of parallel codes into objects makes it not suitable for scienti c computations. Previous works on parallel CORBA objects 13,19] have required modi cations of CORBA speci cations. In this paper, we have shown that it is feasible to de ne parallel CORBA objects on top of CORBA compliant ORB without modi cation of the IDL.…”

Section: Resultsmentioning

confidence: 99%

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Achieving portable and efficient parallel CORBA objects

Denis

Pérez

Priol

2003

Concurrency and Computation

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SUMMARYWith the availability of Computational Grids, new kinds of applications are emerging. They raise the problem of how to program them on such computing systems. In this paper, we advocate a programming model based on a combination of parallel and distributed programming models. Compared to previous approaches, this work aims at bringing SPMD programming into CORBA in a portable way. For example, we want to interconnect two parallel codes by CORBA without modifying either CORBA or the parallel communication API. We show that such an approach does not entail any loss of performance compared to previous approaches that required modi cation to the CORBA standard. Moreover, using an ORB that is able to exploit high performance networks, we show that portable parallel CORBA objects can e ciently make use of such networks.

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Section: Resultsmentioning

confidence: 99%

“…The parallel CORBA object concept (PaCO) 19,20,21] is another attempt for parallel programming in CORBA. A parallel CORBA object is a collection of identical standard CORBA objects as shown in Figure 6.…”

Section: Paco: Parallel Corba Objectmentioning

confidence: 99%

Achieving portable and efficient parallel CORBA objects

Denis

Pérez

Priol

2003

Concurrency and Computation

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“…The following paragraphs describe the Extended-IDL using the example shown in figure 5. All the extensions added to the IDL as well as some restrictions, like interface inheritance, are presented in more details in [7].…”

Section: Parallel Corba Objectmentioning

confidence: 99%

Code Coupling Using Parallel Corba Objects

René

Priol

Alléon³

2001

IFIP Advances in Information and Communication Technology

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This paper describes an approach for scientific code coupling using CORBA objects. Our approach is based on an extension of CORBA, called PaCO (Parallel CORBA Object), to support efficiently the encapsulation of parallel codes into distributed objects. With such extension, a parallel code can be seen as a collection of identical CORBA objects. Our extension to CORBA modifies only the Interface Definition Language (IDL) syntax by adding new language constructs. These new keywords allow the specification of several aspects associated with a collection of objects. We developed a new IDL compiler that generates stubs and skeletons to manage collections of objects transparently to the users. Parallel CORBA objects have been used within an industrial application from Aerospatiale Matra in the field of Electromagnetic simulation. The paper gives some performance results.

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“…We do not investigate this topic in detail, but draw the readers attention to the fact that besides various unsatisfactory workarounds, there is a proposal to extend the CORBA specification that would simplify the way CORBA and MPI work together [11].…”

Section: Other Corba Issuesmentioning

confidence: 99%

A Problem Solving Environment Based on CORBA

Lancaster

2001

Scientific Programming

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We have investigated aspects of the design of Problem Solving Environments (PSE) by constructing a prototype using CORBA as middleware. The two issues we are mainly concerned with are the use of non-trivial (containing more than just a start() method) CORBA interfaces for the computational components, and the provision of interactivity using the same mechanisms used for flow control. After describing the design decisions that allow us to investigate these issues, and contrasting them with alternatives, we describe the architecture of the prototype and its use in the context of a study of photonic materials. We argue that having several methods on a component interface can be used to mitigate performance problems that may arise when trying to solve problems in PSE's based on small components. We describe how our mechanism allows a high degree of computational steering over all components.

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Cobra: A CORBA-compliant programming environment for high-performance computing

Cited by 27 publications

References 4 publications

Achieving portable and efficient parallel CORBA objects

Achieving portable and efficient parallel CORBA objects

Code Coupling Using Parallel Corba Objects

A Problem Solving Environment Based on CORBA

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