Sparsematrix–vectormultiplication (SpMV) is an important issue in scientific computing and engineering applications. The performance of SpMV can be improved using parallel computing. The implementation and optimization of SpMV on GPU are research hotspots. Due to some irregularities of sparse matrices, the use of a single compression format is not satisfactory. The hybrid storage format can exp...

OF THE DISSERTATION COMPILER-DIRECTED DYNAMIC VOLTAGE AND FREQUENCY SCALING FOR CPU POWER AND ENERGY REDUCTION by Chung-Hsing Hsu Dissertation Director: Ulrich Kremer The high power consumption of a processor is becoming a critical problem for both battery-powered devices and high-performance computers. It reduces circuit reliability, complicates the cooling technology, shortens the battery lif...

Dynamic performance stubs provide a framework for the simulation of the performance behavior of software modules and functions. Hence, they can be used as an extension to software performance engineering methodologies. The methodology of dynamic performance stubs can be used for a gain oriented performance improvement. It is also possible to identify “hidden” bottlenecks and to prioritize optim...