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Creators/Authors contains: "Langr, Daniel"

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  1. ; ; ; ; (, Computer Physics Communications)
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  2. ; ; ; ; (, Computer Physics Communications)
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  3. ; ; ; (, The International Journal of High Performance Computing Applications)
    We present the problem of generating a many-nucleon basis in [Formula: see text]-scheme for ab initio nuclear structure calculations in a symmetry-adapted no-core shell model framework. We first discuss and analyze the basis construction algorithm whose baseline implementation quickly becomes a significant bottleneck for large model spaces and heavier nuclei. The outcomes of this analysis are utilized to propose a new scalable version of the algorithm. Its performance is consequently studied empirically using the Blue Waters supercomputer. The measurements show significant acceleration achieved with over two orders of magnitude speedups realized for larger model spaces. 
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