uBench: Performance Impact of CUDA Block Geometry

Yuri Torres, Arturo Gonzalez, Diego R. Llanos
Computer Science Department, University of Valladolid, Spain
University of Valladolid, Tech. report IT-DI-2012-0001, 2012


   author={Yuri Torres and Arturo Gonzalez Escribano and Diego R. Llanos},

   title={uBench: Performance Impact of CUDA Block Geometry},



   institution={Dep. Informatica, Universidad de Valladolid}


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Nowadays, there is a lack of performance models for the execution of programs implemented using the CUDA model for GPU (Graphics Processing Units) devices. We have designed and implemented a suite of micro-benchmarks, called uBench. The purpose of uBench is to identify the effects on performance derived from the combination of: (1) the hardware details of each GPU device, and (2) the configuration of the thread-block, an important runtime configuration parameter in the CUDA programming model.
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