C++ Compiler for Multi-core

Game developer Codeplay Software has demoed an automatic parallelizing compiler for C++. The Sieve C++ Parallel Programming System is a scalable programming system for building C++ code suitable for use on multi-core processing platforms. The Sieve System consists of an extension to a C++ compiler, a multi-core linker, and a runtime to schedule the processes.

The Sieve concept seems straightforward enough:

1. A sieve is defined as a block of code contained within a sieve {} marker and any functions that are marked with sieve.
2. Inside a sieve, all side-effects are delayed until the end of the sieve.
3. Side effects are defined as modifications of data that are declared outside the sieve.

Codeplay claims to have tested several different algorithms written in Sieve C++ on a dual Intel Xeon 5300 quad-core PC, AGEIA's PhysX processor, and the Cell BE based Sony Playstation3. The test programs were compiled using the Sieve C++ compiler and linked with the appropriate Sieve runtime for the target platform. Results were measured from program executions across a sequentially increasing number of processor cores

Utilizing the six available SPEs on the Playstation3, for instance, CRC, Mandelbrot and Julia Ray-Tracing showed a performance improvement of 462-, 557-, and 572-percent, respectively, over execution on a single SPE.

Posted by Jon Erickson at 02:36 PM  Permalink

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