Dear Dr. Aberdeen We append a referee report on your paper C461:Emmerald: A Fast Matrix-Matrix Multiply Using Intel SIMD Technology We would be happy to publish your paper if you addressed the changes suggested by the referee. I think this is quite easy! Please include a discussion of your changes and how they answer the referee in your resubmittal. If this is persuasive, we can publish your paper without further refereeing. I thank you for your interest in Concurrency.Practice and Experience and apologize for not replying earlier. Please send all communication electronically if possible using the address fox@csit.fsu.edu If you should need a "real address", please use: Geoffrey Fox Computational Science and Information Technology Florida State University 400 Dirac Science Library Tallahassee Florida 32306-4130 850-644-4587 but easiest is cell phone 3152546387 C461 Referee Report ------------------- This is a useful well written paper. I would suggest that the authors add a short discussion as to what other applications and chip architectures (e.g. Sun or ICM) would benefit from their techniques and if improvement factors would be equally impressive. As a minor point, I would suggest the phrase "Intel SIMD Technology" used in title and abstract is obscure to most readers. It is clear from paper but title starts one thinking of iWARP i860 and other Intel adventures. Something like "optimal Pentium Floating Point" or equivalent would be clearer