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Inhalt des Dokuments

Completed Projects

Low-power Parallel Computing on GPUs


Massively parallel GPUs are now being used in a great variety of market segments, ranging from video-games, to user interfaces, and to HPC. There are several signs, however, that computer and consumer technology industries are faced with major challenges in delivering improved performance and innovation for future entertainment devices. First, game developers have argued that while GPUs are increasing in performance, this is not leading to visual quality improvements because GPUs fundamentally restrict their flexibility. Second, there are signs that GPUs are approaching a "power wall", and architecture innovation is required now to circumvent this wall. Third, there is a lack of GPU tools available to compare multi-core processors (CPUs) to GPUs and to perform GPU program transformations to optimize for performance and power. To address these challenges, this project brings together commercial tools, applications and GPU designers, with academic researchers to analyze real-world mass-market software on comparable graphics processor architectures. ....[more]

Enabling technologies for a programmable many-CORE


Design complexity and power density implications stopped the trend towards faster single-core processors. The current trend is to double the core count every 18 months, leading to chips with 100+ cores in 10-15 years. Developing parallel applications to harness such multicores is the key challenge for scalable computing systems. The ENCORE project aims at achieving a breakthrough on the usability, code portability, and performance scalability of such multicores. ... [more]



Very Long Instruction Word (VLIW) and so-called Transport Triggered Architectures (TTA) are potentially simpler and hence more power-efficient than superscalar architectures since they do not need hardware to detect instruction-level parallelism. We have developed an FPGA-prototype of a hybrid VLIW/TTA architecture named SynZEN...[more]



The CluMP! project was funded by the faculty IV to keep digital design knowledge in house and make it accessible to other faculty members without any experience in this area. 
The technical core foundation will be a tightly coupled FPGA based cluster with focus on low cost, low energy, flexibility and capabilities for academic research... [more]

ComponentC: A Parallel Programming Language for Developing Performance Portable Software

Multicore architectures increase the programming effort significantly. It is expected that future processors will contain more cores, have a heterogeneous architecture, and implement different memory models. These architectural features are currently visible to the programmer and dramatically increase the effort for creating performance portable software...[more]

Automatic loop vectorization

Every common processor architecture supports single-instruction multiple-data (SIMD) instructions, since SIMD instructions are potentially much more (power-) efficient than scalar instructions. However, auto-vectorizing compilers that exploit these instructions, such as the GCC compiler, do not achieve the same performance as handwritten code...[more]

Starbench parallel benchmark suite

In recent years a multitude of parallel programming models have been introduced to ease parallel programming. Each programming model brings its own concepts and semantics, which makes it hard to see their impact on performance. Starbench is a benchmark suite that allows comparing different parallel programming models for embedded and consumer applications. Starbench consist of C/C++ benchmarks and currently covers video coding, image compression, image processing, hashing, artificial intelligence, computer vision, and compression. For each of the benchmark an optimized Pthreads version has been developed to serve as baseline. ...[more]



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