INTEL TO REVISE SPECINT92 BENCHMARK RESULTS LOWER DUE TO BETA COMPILER ERROR SANTA CLARA, CALIF. -- Jan. 5, 1996 -- Intel Corporation today said a bug was discovered in the beta compiler used to generate SPEC benchmark results, leading to an overstatement of SPECint92 results for certain processors by about 10 percent. SPECint92 is an older integer version of the industry's SPEC benchmark and is being phased out in favor of the more modern SPECint95. The company emphasized that the beta compiler error does not affect performance results for SPECfp92, SPECint95 and SPECfp95, as well as various other Intel-reported benchmarks and Intel's iCOMP index, which are all accurate. The issue is confined to beta compiler software, and affects neither microprocessor function nor the performance of any applications. "While we know SPEC members have been moving rapidly toward the new SPEC95 benchmark suite as a preferred performance metric, we are embarrassed and truly sorry for this oversight," said Fred Pollack, an Intel Fellow and director of Intel's Measurement, Architecture and Planning Group. SPEC is a cooperative computer industry group formed in 1989 to develop benchmarks that measure true processor performance. Pollack also said Intel processor performance as measured by SPECint95 still leads the industry. He said the updated version of the Intel C Reference Compiler 2.2 will be distributed to beta users and corrected SPECint92 results will be made available within 10 days on Intel's web page (http://www.intel.com) and by faxback. The beta compiler skewed SPECint92 performance results for Pentium processors 100 MHz and higher that were reported from Sept. 1, 1995, onward, and Pentium Pro processors which were introduced on Nov. 1, 1995. Those results were derived last fall, when the beta compiler was used on the SPEC92 023.eqntott benchmark leading to a 15 to 18 percent improvement in SPECint92 for the Intel processors. At the time, Intel noted in its Pentium Pro processor performance brief that some of the optimizations used for 023.eqntott were included to enable an equitable comparison between its processors and those of other vendors also using the same optimization. Intel also acknowledged that the resulting increase in 023.eqntott was actually far more than expected, and concluded that it apparently benefits Intel processors more than others. For that reason, in the performance brief Intel strongly encouraged users to transition to SPEC95, which is a major improvement over SPEC92. SPEC95 does not include 023.eqntott, and is thus unaffected by this optimization. The final Intel Reference C Compiler 2.2 is expected to ship next month to developers. Intel, the world's largest chip maker, is also a leading manufacturer of personal computer, networking and communications products.