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NEW O'REILLY RELEASE MAXIMIZES RISC PERFORMANCE

 SEBASTOPOL, Calif., June 21 /PRNewswire/ -- O'Reilly & Associates today announced the release of the first book for application programmers and purchasing managers facing the confusing array of RISC- based workstation architecture, such as the DEC Alpha/AXP, the IBM RS/6000, Sun's SuperSPARC, and the HP 9000/700 series. "High Performance Computing" ($25.95; 800-998-9938), by Kevin Dowd, a principal with the Atlantic Computing Technology Corp. of Wethersfield, Conn., not only helps make sense of the newest generation of workstations, it tells how to maximize their performance.
 "High Performance Computing" covers everything from the basics of modern workstation architecture, to structuring benchmarks, to squeezing more performance out of critical applications. It also explains how optimizing compilers work: it discusses what a good compiler can do and, more important, what a good compiler can't do -- and what programmers have to do themselves. The book closes with a look at the high- performance future: parallel computers, including exotic distributed memory multiprocessors, and the more "garden-variety" shared memory processors that are already appearing on desktops.
 Tricks are revealed that have been used in supercomputer labs for years, such as loop unrolling, loop interchange, and other methods that improve memory access patterns and take advantage of parallelism latent in code. "High Performance Computing" pays special attention to memory issues, including perhaps the most important story in high performance computing (and not likely to be told by vendors), the increasing disparity between CPU speeds and memory speeds.
 Another valuable section of the book discusses the benchmarking process: how to evaluate a computer's performance. Dowd discusses several of the "standard" industry benchmarks, explaining what they measure and what they don't, so that readers won't be overcome by a fog of statistics when the next salesperson walks in the door. He also shows how to set up a benchmark: how to structure the code, how to measure the results and how to interpret them.
 O'Reilly & Associates is recognized worldwide for its definitive books on UNIX, the X Windows System and the Internet. Working closely with developers of new technologies, O'Reilly's editors are "computer people" who use the software and systems they write about. The company's planning and review cycles link together authors, computer vendors and technical experts throughout the industry in a creative collaboration that mirrors the strengths of the "open systems" philosophy itself.
 -0- 6/21/93
 /CONTACT: Brian Erwin of O'Reilly & Associates, 707-829-0515/


CO: O'Reilly & Associates ST: California IN: CPR PUB SU: PDT

TM-TB -- SF001 -- 3895 06/21/93 08:05 EDT
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Date:Jun 21, 1993
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