A selection of 14 of the 19 papers presented at the workshop cover measuring, understanding, and optimizing application and system performance; prediction and speculative execution; interactions between hardware and software in architecture design; compilation; and parallel system architecture. Specific topics include system support for the dynamic optimization of application performance, a speculative multi-threading with selective multi-path execution, new methods for exploiting program structure and behavior in computer architecture, implementing a non-strict functional programming language V on a threaded architecture EARTH, and the architecture of a parallel computer Cenju-4. Only authors are indexed. Annotation c. Book News, Inc., Portland, OR (booknews.com)