Fault-tolerant Routing for Irregular Faulty Patterns in 2D-Mesh Without Virtual Channel

Savio S.H. Tse, Jipeng Zhou, Francis C.M. Lau
2012 2012 12th International Symposium on Pervasive Systems, Algorithms and Networks  
In wormhole meshes, many fault-tolerant routing algorithms have been proposed. None of them, however, can tolerate general (irregular) fault model without virtual channels. In this paper, a 0-virtual channel fault-tolerant deadlockfree routing algorithm for general fault model is proposed for wormhole routing in two-dimensional meshes. Considering XY-routing as a precious property of twodimensional meshes, we try to keep as many XY-routings as possible without incurring any deadlock. During the
more » ... preprocessing, the mesh is divided into a number of fault-free (healthy) rectangular regions, and a minimum spanning tree connecting all these regions is built. Routing within a region uses XY-routing mainly; and routing across regions will use the spanning tree. An online solution is given for handling dynamic faults and recovery.
doi:10.1109/i-span.2012.21 fatcat:kx7ok7lmxff6plth3zdfxc4ggq