NDLI: Optimization for a superscalar out-of-order machine

Content Provider	ACM Digital Library
Author	Holler, Anne M.
Abstract	Compiler optimization plays a key role in unlocking the performance of the PA-8000, an innovative dynamically-scheduled machine which is the first implementation of the 64-bit PA 2.0 member of the HP PA-RISC architecture family. This wide superscalar, long out-of-order machine provides significant execution bandwidth and automatically hides latency at runtime; however, despite its ample hardware resources, many of the optimizing transformations which proved effective for the PA-8000 served to augment its ability to exploit the available bandwidth and to hide latency. Further, machine-specific factors influenced all levels of optimization to a degree without precedent in the set of previous PA-RISC processors. While legacy codes benefit from the PA-8000's sophisticated hardware, recompilation of old binaries can be vital to realizing the full potential of the PA-8000, given the impact of new compilers in achieving peak performance for this machine.
Starting Page	336
Ending Page	348
Page Count	13
File Format	PDF
ISBN	0818676418
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1996-12-02
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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Optimization for a superscalar out-of-order machine