Dear Professor ... ..., I would appreciate if you, or your designated colleague, could act as a referee for the paper ... ... ... by ... ... ... This paper has been selected as a candidate for publishing in the PARA'04 conference proceedings in the Springer series lecture notes in computer science. You may find additional information on the Springer, such as aims and scope, editorial board etc. on the URL: "http://www.springer-ny.com/". The editors of this proceedings are: Jack Dongarra from the Department of Computer Science of the University of Tennessee and Oak Ridge National Laboratory, and Kaj Madsen and Jerzy Wasniewski from the Department of Informatics and Mathematical Modelling of the Technical University of Denmark. The paper as a postscript and PDF compressed files, and the referee form in ascii are attached to this email. We would appreciate if you, or your designated colleague, could return the review by November 30, 2004. If for any reason the review can not be completed in this time period, please let us know (jw@imm.dtu.dk), and we would be grateful if you could suggest a name of another referee. Finally, thank you in advance for your time. We recognize the effort required for this review, and appreciate your contribution to maintain the quality of the Springer series lecture notes in computer science. On behalf of the PARA'04 conference proceedings editors, Jerzy Wasniewski Email: jw@imm.dtu.dk