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HP Integrity servers, based on the Intel Itanium 2 processor, have achieved record results on several standard high performance computing benchmarks, including: Linpack N*N, SPEC ENV2002, SPEC CHEM2002, SPEC OMP and SPECfp benchmarks. The HP Integrity Superdome server set a new record for the fastest and most efficient 64-processor shared-memory Linpack N*N benchmark, sustaining 341.685 Gflop/s. This surpasses the previous HP Integrity Superdome 335.45 Gflop/s record set for the June 2003 TOP500 Supercomputer List(1). This 64-processor result is faster and more efficient than SGI Altix, IBM pSeries and all other shared-memory 64-processor results. For example, the HP Integrity Superdome efficiency was 89 percent of peak, far outpacing the 66 percent efficiency of the 32-processor IBM p690 results. HP Integrity systems have also maintained the No. 1 position at the top of the list in the Linpack report(2), with no challengers since the 1.5 GHz Itanium 2-based HP Integrity systems were released in June 2003. These servers secured 1,635 Mflop/s for the 100x100 result and 5,303 Gflop/s for the 1000x1000 single-processor results. HP Integrity servers beat the competition with new SPEC benchmark results New SPEC HPC benchmarks(superscript: (3)) show HP Integrity servers command a large performance lead over AMD Opteron-based IBM systems and all other vendors. In fact, HP Integrity servers outperformed Opteron-based IBM configurations that used twice as many processors. The following SPEC results show HP Integrity industry-leading performance faster than IBM, SGI and all other vendors. SPEC ENV2002 and SPEC CHEM2002 benchmarks HP Integrity servers delivered industry-leading performance results for all three of the following SPEC ENV2002 and SPEC CHEM2002 benchmarks: 361.wrf_m, 360.wrf_s, and 371.gamess_m. For the 361.wrf_m SPEC SPECenvM2002 weather-environmental benchmark, a 24-processor (12 node) HP Integrity configuration achieved a faster result (199.75)(3) than an Opteron-based IBM configuration that used twice as many nodes and processors (188.68).(4) On the small version (360.wrf_s) of the SPEC SPECenvM2002 benchmark, a 4-processor (two node) HP Integrity configuration was faster (2530.45)(3) than an Opteron-based IBM system that again used twice as many nodes and processors (2374.78).(4) For the SPECchemM2002 chemistry benchmark (371.gamess_m), a 40-processor (20 node) HP Integrity configuration reached a faster result (47.82)(3) than a 48-processor (24 node) Opteron-based IBM server (46.59).(4) SPEC OMP (Open MP) benchmarks The HP Integrity Superdome server running 64 1.5 GHz Itanium 2 processors on the HP-UX operating system, set the official leading score of 257,702 for the SPEC OMPLbase2001 benchmark, for CPU counts of 96 or less. The same system also set the official leading score of 271,659 on the SPEC OMPLpeak2001 benchmark(4) for all processor counts. These results are more than 33 percent higher than SGI's Origin 3900 system, more than 45 percent faster than a Fujitsu HPC2500 with 64 processors, and are also faster than results reported by all other vendors, including IBM. The family of highly scalable HP Integrity systems powered by 1.5 GHz Itanium 2 processors running HP-UX, also leads the industry for SPEC Open MP benchmark results for eight, 16, 32 and 64 processor runs(4). The size and run time of the SPEC OMP tests reflect the demands of scientific and engineering applications to model large, complex tasks. The SPEC OMP benchmarks specifically measure the shared-memory multiprocessor performance of the computers' processors, memory architecture, operating system and compiler. SPECfp (floating point) benchmark Since its introduction in June 2003, the HP Integrity rx2600 server has held the record for the fastest server SPECfp 2000 result in the industry: 2,106(4). This result is yet to be challenged by any other vendor. Additional new industry-leading SPEC HPC2002 benchmark results have been achieved for the following benchmark configurations(3):

	SYSTEM	CPUs	RESULT
	HPC2002 Medium
	SPECchemM2002 hp server rx2600 cluster (1500MHz Itanium2)	48	51.17
	SPECchemM2002 hp server rx2600 cluster (1500MHz Itanium2)	40	47.82
	SPECenvM2002 hp server rx2600 cluster (1500MHz Itanium2)	48	308.75
	SPECenvM2002 hp server rx2600 cluster (1500MHz Itanium2)	40	275.13
	SPECenvM2002 hp server rx2600 cluster (1500MHz Itanium2)	32	236.95
	SPECenvM2002 hp server rx2600 cluster (1500MHz Itanium2)	24	199.75
	SPECseisM2002 hp server rx2600 (1500MHz Itanium2)	2	46.00
	HPC2002 Small
	SPECchemS2002 hp server rx2600 (1500MHz Itanium2)	2	1044.74
	SPECchemS2002 hp server rx5670 (1500MHz Itanium2)	4	1530.51
	SPECenvS2002 hp server rx2600 cluster (1500MHz Itanium2)	8	3946.08
	SPECenvS2002 hp server rx2600 cluster (1500MHz Itanium2)	4	2530.45
	SPECseisS2002 hp server rx2600 (1500MHz Itanium2)	2	1595.62

For more information on HP Integrity servers for High Performance Technical Computing, visit www.hp.com/go/hptc. (1) The complete listing of TOP500 Supercomputer sites is available at www.top500.org. (2) More information on the Linpack benchmark is available at http://netlib.org/benchmark/performance.ps. (3) HP Integrity results submitted to SPEC on November 12, 2003, are under review with SPEC HPC until November 26, 2003, after which they will be viewable at www.spec.org. (4) Competitive SPEC benchmark results stated above reflect results published on www.spec.org as of November 12, 2003.