Algorithm-Based Fault Tolerance Applied to P2P Computing Networks

—P2P computing platforms are subject to a wide range of attacks. In this paper, we propose a generalisation of the previous disk-less checkpointing approach for fault-tolerance in High Performance Computing systems. Our contribution is in two directions: first, instead of restricting to 2D checksums that tolerate only a small number of node failures, we propose to base disk-less checkpointing on linear codes to tolerate potentially a large number of faults. Then, we compare and analyse the use of Low Density Parity Check (LDPC) to classical Reed-Solomon (RS) codes with respect to different fault models to fit P2P systems. Our LDPC disk-less checkpointing method is well suited when only node disconnections are considered, but cannot deal with byzantine peers. Our RS disk-less checkpointing method tolerates such byzantine errors, but is restricted to exact finite field computations. Keywords-ABFT; P2P; distributed computing; SUMMA; linear coding; fault-tolerance

• Type: Conference
• Year: 2009
• Where: AP2PS
• Authors: Thomas Roche, Mathieu Cunche, Jean-Louis Roch
• Keywords: AP2PS 2009, Computer Networks, Disk-less Checkpointing, Disk-less Checkpointing Approach, Disk-less Checkpointing Method