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To: Jim McMannis who wrote (118682)	11/20/2000 10:41:04 PM
From: Scumbria	Read Replies (1) \| Respond to of 186894

Jim, There aren't many real world applications which don't suffer a lot of mispredicted branches. Intel can generate SPEC code which runs very fast on P4, because branches and data fetches are predictable. Some graphics applications will also run fast on P4 for these reasons. Most general purpose code will suck however. Scumbria

To: Jim McMannis who wrote (118682)	11/20/2000 10:51:58 PM
From: Windsock	Read Replies (1) \| Respond to of 186894

Jimbo - Re: "What programs would parallel SPEC?" The SPEC benchmarks are good indicators of raw CPU power. As software is written it will take advantage of the power available in the new technology contained in the P 4. You can be the farm on it -- or the orange grove in Florida :-) First comes the egg, then comes the chicken. At least that is true in the hardware world.

To: Jim McMannis who wrote (118682)	11/20/2000 10:55:48 PM
From: Elmer	Respond to of 186894

Re: "What programs would parallel SPEC? Run fast on a processor that does well in SPECfpu2000 oe whatever the P4 does well at?" Checkout what SPEC says about their benchmarks: "Technology evolves at a breakneck pace. With this in mind, SPEC believes that computer benchmarks need to evolve as well. While the older benchmarks still provide a meaningful point of comparison, it is important to develop tests that can consider the changes in technology. As the successor to CPU95, SPEC CPU2000 is the next-generation industry-standardized CPU-intensive benchmark suite. SPEC designed CPU2000 to provide a comparative measure of compute intensive performance across the widest practical range of hardware. The implementation resulted in source code benchmarks developed from real user applications. These benchmarks measure the performance of the processor, memory and compiler on the tested system" spec.org Here's the FP tests they run. Does this sound like a list of tests hand picked to make Intel processors look good? 168.wupwise Fortran 77 Physics / Quantum Chromodynamics 171.swim Fortran 77 Shallow Water Modeling 172.mgrid Fortran 77 Multi-grid Solver: 3D Potential Field 173.applu Fortran 77 Parabolic / Elliptic Partial Differential Equations 177.mesa C 3-D Graphics Library 178.galgel Fortran 90 Computational Fluid Dynamics 179.art C Image Recognition / Neural Networks 183.equake C Seismic Wave Propagation Simulation 187.facerec Fortran 90 Image Processing: Face Recognition 188.ammp C Computational Chemistry 189.lucas Fortran 90 Number Theory / Primality Testing 191.fma3d Fortran 90 Finite-element Crash Simulation 200.sixtrack Fortran 77 High Energy Nuclear Physics Accelerator Design 301.apsi Fortran 77 Meteorology: Pollutant Distribution