Abstract: Gravitational wave (GW) is an important prediction of Einstein’s general relativity theory.Some were genera-ted during the big bang.Their most easily detectable sources are expected to be binaries of orbiting objects like black holes and/or neutron stars.Their study can thus give information about some important astrophysical objects.A few large-scale laser interferometer gravitational wave observatories have been built,with the goal of directly detecting GWs for the first time.Coherent Wave Burst (cWB) is an important pipeline that looks for gravitational wave in the data from multiple observatories,simultaneously and in real time.It is useful to improve the performance of cWB so as to allow it to perform deeper analyses. Therefore we analyzed a time-critical function from cWB,designed and implemented an efficient acceleration method on GPU.Experimental results show that our method can achieve at least 10x speedup compared with the original CPU implementation with SSE instruction.The results show that our GPU acceleration method is a viable option for improving gravitational wave data processing.

Key words: Gravitational waves,cWB pipeline,GPU,Parallel processing