Adrian Marriott

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Commercial systems are developed with a huge range of performance requirements and we are concerned in this article with the small number of systems where absolute maximum performance is demanded either in terms of execution speed or available memory. We'll discuss the role of bespoke implementation and show that writing programs that utilize novel data structures and new algorithms designed with knowledge of the specific problem context is a necessary complement to the generic components and automatic optimizations offered by compilers and modern JVMs to maximize performance. Empirical Tests We'll demonstrate this thesis here with an empirical comparison of the standard Java sort routines working with integers and bespoke implementations optimized to handle integers in specific contexts. Graphs comparing the speed of these algorithms will be presented. All the empi... (more)