V. Chirivella | Universidad Politécnica de Valencia (original) (raw)

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Papers by V. Chirivella

Lecture Notes in Computer Science, 2009

ABSTRACT Fault tolerance mechanisms become indispensable as the number of processors increases in... more ABSTRACT Fault tolerance mechanisms become indispensable as the number of processors increases in large systems. Measuring the effectiveness of such mechanisms before its implementation becomes mandatory. Research toward understanding the effects of different network parameters on the dependability parameters, like mean time to network failure or availability, becomes necessary. In this paper we analyse in detail such effects with a methodology proposed previously by us. This methodology is based on Markov chains and Analysis of Variance techniques. As a case study we analyse the effects of network size, mean time to node failure, mean time to node repair, mean time to network repair and coverage of the failure when using a 2D mesh network with a fault-tolerant mechanism (similar to the one used in the BlueGene/L system), that is able to remove rows and/or columns in the presence of failures.

Proceedings International Symposium on Parallel Architectures, Algorithms and Networks. I-SPAN 2000, 2000

ABSTRACT The traditional approach to study fault-tolerance in multicomputer interconnection netwo... more ABSTRACT The traditional approach to study fault-tolerance in multicomputer interconnection networks consists of determining the worst possible combination of faulty components that causes a network failure, and then assuming that this will occur. But the worst possible combination does not always occur, and the routing algorithm allows the network to work in the presence of a greater number of failures. The network reliability parameters computed according to the traditional approach will be under-estimated. In this paper we use a new methodology to compute accurately the reliability and availability functions. The reliability parameters have been computed for a network with mesh topology, taking into account size, routing algorithm, failure and repair rates of the network channels and coverage

13th Euromicro Conference on Parallel, Distributed and Network-Based Processing, 2005

... To simplify the task of designing high fractional designs without mastering the theoretical b... more ... To simplify the task of designing high fractional designs without mastering the theoretical basics,Genini Taguchi proposed the generalized use of some basic designs that he grouped in a set of tables and graphics [9]. These designs are called orthogonal arrays. ...

Chemometrics and Intelligent Laboratory Systems, 1993

Chemometrics and Intelligent Laboratory Systems, 1994

Lecture Notes in Computer Science, 2009

ABSTRACT Fault tolerance mechanisms become indispensable as the number of processors increases in... more ABSTRACT Fault tolerance mechanisms become indispensable as the number of processors increases in large systems. Measuring the effectiveness of such mechanisms before its implementation becomes mandatory. Research toward understanding the effects of different network parameters on the dependability parameters, like mean time to network failure or availability, becomes necessary. In this paper we analyse in detail such effects with a methodology proposed previously by us. This methodology is based on Markov chains and Analysis of Variance techniques. As a case study we analyse the effects of network size, mean time to node failure, mean time to node repair, mean time to network repair and coverage of the failure when using a 2D mesh network with a fault-tolerant mechanism (similar to the one used in the BlueGene/L system), that is able to remove rows and/or columns in the presence of failures.

Proceedings International Symposium on Parallel Architectures, Algorithms and Networks. I-SPAN 2000, 2000

ABSTRACT The traditional approach to study fault-tolerance in multicomputer interconnection netwo... more ABSTRACT The traditional approach to study fault-tolerance in multicomputer interconnection networks consists of determining the worst possible combination of faulty components that causes a network failure, and then assuming that this will occur. But the worst possible combination does not always occur, and the routing algorithm allows the network to work in the presence of a greater number of failures. The network reliability parameters computed according to the traditional approach will be under-estimated. In this paper we use a new methodology to compute accurately the reliability and availability functions. The reliability parameters have been computed for a network with mesh topology, taking into account size, routing algorithm, failure and repair rates of the network channels and coverage

13th Euromicro Conference on Parallel, Distributed and Network-Based Processing, 2005

... To simplify the task of designing high fractional designs without mastering the theoretical b... more ... To simplify the task of designing high fractional designs without mastering the theoretical basics,Genini Taguchi proposed the generalized use of some basic designs that he grouped in a set of tables and graphics [9]. These designs are called orthogonal arrays. ...

Chemometrics and Intelligent Laboratory Systems, 1993

Chemometrics and Intelligent Laboratory Systems, 1994

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