Lot of efforts have been devoted by ATLAS and CMS teams to improve the quality of LHC events analysis with the Matrix Element Method (MEM). Up to now, very few implementations try to face up the huge ...computing resources required by this method. We propose here a highly parallel version, combining MPI and OpenCL, which makes the MEM exploitation reachable for the whole CMS datasets with a moderate cost. In the article, we describe the status of two software projects under development, one focused on physics and one focused on computing. We also showcase their preliminary performance obtained with classical multi-core processors, CUDA accelerators and MIC co-processors. This let us extrapolate that with the help of 6 high-end accelerators, we should be able to reprocess the whole LHC run 1 within 10 days, and that we have a satisfying metric for the upcoming run 2. The future work will consist in finalizing a single merged system including all the physics and all the parallelism infrastructure, thus optimizing implementation for best hardware platforms.
Wavelet transform of multifractals ARNEODO, A; GRASSEAU, G; HOLSCHNEIDER, M
Physical review letters,
11/1988, Letnik:
61, Številka:
20
Journal Article
Recenzirano
The wavelet transform (WT) is introduced as a mathematical microscope that is well suited for investigating the local scaling properties of fractal objects. The WT technique is applied to probability ...measures on self- similar Cantor sets and to the golden-mean trajectories on two-tori at the onset of chaos. (B.J.)
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