EAN: 9781461422297

SPRINGERBRIEFS IN COMPUTER SCIENCE SCALABLE P...

Existing software applications should be redesigned if programmers want to benefit from the
performance offered by multi- and many-core architectures. Performance scalability now depends
on the possibility of finding and exploiting enough Thread-Level Parallelism (TLP) in
applications for using the increasing numbers of cores on a chip. Video decoding is an example
of an application domain with increasing computational requirements every new generation. This
is due  on the one hand  to the trend towards high quality video systems (high definition and
frame rate  3D displays  etc) that results in a continuous increase in the amount of data that
has to be processed in real-time. On the other hand  there is the requirement to maintain high
compression efficiency which is only possible with video codes like H.264 AVC that use advanced
coding techniques. In this book  the parallelization of H.264 AVC decoding is presented as a
case study of parallel programming. H.264 AVC decoding is an example of a complex application
with many levels of dependencies  different kernels  and irregular data structures. The book
presents a detailed methodology for parallelization of this type of applications. It begins
with a description of the algorithm  an analysis of the data dependencies and an evaluation of
the different parallelization strategies. Then the design and implementation of a novel
parallelization approach is presented that is scalable to many core architectures. Experimental
results on different parallel architectures are discussed in detail. Finally  an outlook is
given on parallelization opportunities in the upcoming HEVC standard.

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