@Article{ceron:dna, author = {C. Ceron and J. Dopazo and E. L. Zapata and J.M. Carazo and O. Trelles}, title = {Parallel implementation of {DNAml} program on message-passing architectures}, journal = {Parallel Computing}, year = {1997}, month = {June}, volume = {24}, number = {5--6}, pages = {701--716}, publisher = {Elsevier Science}, URL = {http://dx.doi.org/10.1016/S0167-8191(98)00002-7}, keywords = {parallel computers, run-time analysis, phylogenetic trees, DNAml program, source code, parallel I/O, pario-bib}, abstract = {We present a new computing approach for the parallelization on message-passing computer architectures of the DNAml algorithm, one of the most powerful tools available for constructing phylogenetic trees from DNA sequences. An analysis of the data dependencies of the method gave little chances to develop an efficient parallel approach. However, a careful run-time analysis of the behaviour of the algorithm allowed us to propose a very efficient parallel implementation based on the combination of advanced dynamic scheduling strategies, speculative running-time execution decisions and I/O buffering. In this work, we discuss specific Parallel Virtual Machine (PVM)-based implementations for a cluster of workstations and for Distributed Memory multiprocessors, with high performance results. The code can be obtained from our public-domain sites.}, comment = {They discuss the parallelization on message-passing computers of the {DNA}ml algorithm, a tool used to construct phylogenetic trees from {DNA} sequences. By performing a run-time analysis of the behavior of the algorithm they came up with an efficient parallel implementation based on dynamic scheduling strategies, speculative run-time execution decisions and I/O buffering. They use I/O buffering (prefetching) to fetch tasks that need to be processed. The parallel code was written in C using PVM for message passing and is avaialable via anonymous ftp at ftp.ac.uma.es.} }