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Date: Wed, 15 Jan 1997 00:15:50 GMT
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Last-modified: Tue, 13 Aug 1996 21:27:09 GMT
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<html><head><title>Professor Ran Libeskind-Hadas' Research Page</title></head><body bgcolor="#ffffff"> <center> <h3> Research Interests </h3> </center><p>My research addresses the problem of fault-tolerance indistributed memory parallel computers or <EM> multicomputers. </EM> While multicomputers have a number of attractive features, one difficultyin these systems is that of computing in the presence of faults.This problem is particularly acute in massively parallel architecturesemploying very large numbers of nodes.<p>The objective of this research is to develop practical algorithmsfor fault-tolerant unicast and multicast routing in wormhole-routed multicomputers. In addition, we seekto obtain tight theoretical bounds on the number of faults that canbe tolerated with a given set of resources.In particular, my students and I are developing efficientfault-tolerant adaptive routing algorithms for the mesh and torustopologies. Several <!WA0><A HREF = "http://www.cs.hmc.edu/~hadas/vitae/papers.html"> technicalreports and papers</A> describing recent results are available in postscript.<p>A number of Harvey Mudd students have taken an active role in this research project. They are Eli Brandt ('95), Tom Hehre('96), Kevin Watkins ('97), Andrew Hutchings ('98), and Mark Reyes ('98).<p>Tom Hehre and Kevin Watkins developedthe <b> Mesh Architecture Routing Simulator (MARS). </b>MARS is an event-drivensimulation package for studying wormhole-routed meshes.MARS is implemented in C++ and has an X-windows-based graphicaluser interface that allows visualization of network traffic andother network characteristics. MARS allows easy definition of router architectures, routingalgorithms, and selection policies.Virtual channels are implementedwith demand-based multiplexing and the number of internal channelsand other router characteristics are user-definable.A number of router and channel latency parameters are alsouser-definable in order to facilitate fair comparisons between algorithms based on different routing models.An example of the MARS interface is shown below.<p><center><!WA1><IMG SRC="http://www.cs.hmc.edu/~hadas/research/mars.GIF"></center><p><HR><address>Last modified August 13, 1996 by hadas@cs.hmc.edu</address></body></html>⌨️ 快捷键说明
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