PLX: a fully subword-parallel instruction set architecture for fast scalable multimedia processing
نویسندگان
چکیده
PLX is a small, fully subword-parallel instruction set architecture designed for very fast multimedia processing, especially in constrained environments requiring low cost and power such as handheld multimedia information appliances. In PLX, we select the most useful multimedia instructions added previously to microprocessors. We also introduce a few novel features: a new definition of predication requiring very few bits in each predicated instruction, and datapath scalability from 32-bit to 128-bit words, which allows different degrees of subword parallelism without any changes to the ISA. Performance results from basic multimedia kernels testify to PLX’s superiority for multimedia processing.
منابع مشابه
Adding 3D Graphics Support to PLX
PLX is a compact, fully subword-parallel instruction set architecture (ISA) for very fast multimedia processing. This paper adds floating-point instructions to PLX for 3D graphics processing, which is essential for applications such as games and digital content creation. Based on an analysis of the 3D graphics pipeline from an ISA point of view, we show the operations and data types needed. We...
متن کاملPLX: An Instruction Set Architecture and Testbed for Multimedia Information Processing
PLX is a concise instruction set architecture (ISA) that combines the most useful features from previous generations of multimedia instruction sets with newer ISA features for high-performance, low-cost multimedia information processing. Unlike previous multimedia instruction sets, PLX is not added onto a base processor ISA, but designed from the beginning as a standalone processor architecture...
متن کاملRefining Instruction Set Architecture for High-Performance Multimedia Processing in Constrained Environments
Multimedia processing in software has been significantly accelerated by the addition of subword-parallel instructions to the instruction set architectures (ISAs) of modern microprocessors. While some of these multimedia instructions are simple and effective, others are very complex, requiring large, special-purpose functional units that are not practical for constrained environments such as han...
متن کاملMultimedia Extensions for General-purpose Processors
This paper gives an overview of the multimedia instructions that have been added to the instruction set architectures of general-purpose microprocessors to accelerate media processing. Examples are MAX, MMX and VIS, the multimedia extensions for PA-RISC, ix86, and SPARC processor architectures. We describe subword parallelism, a low overhead form of SIMD parallelism, and the classes of instruct...
متن کاملEfficiency of microSIMD architectures and index-mapped data for media processors
We show that microSIMD architectures are more efficient for media processing than other parallel architectures like SIMD or MIMD parallel processor architectures, and VLIW or superscalar architectures. We define alternative mappings of data onto subwords, and show that the index mapping is an ideal mapping for achieving maximal subword parallelism with minimal revamping of the original serial l...
متن کامل