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T1  - MSTAR - a fast parallelized algorithmically regularized integrator with minimum spanning tree coordinates 
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UR  - http://hdl.handle.net/10138/320660 
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A1  - Rantala, Antti; Pihajoki, Pauli; Mannerkoski, Matias; Johansson, Peter H.; Naab, Thorsten 
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Y1  - 2020 
LA  - eng 
AB  - We present the novel algorithmically regularized integration method MSTAR for high-accuracy (vertical bar Delta E/E vertical bar greater than or similar to 10(-14)) integrations of N-body systems using minimum spanning tree coordinates. The twofold parallelization of the O(N-part(2)) force loops and the substep divisions of the extrapolation method allow for a parallel scaling up to N-CPU = 0.2 x N-part. The efficient parallel scaling of MSTAR makes the accurate integration of much larger partic... 
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KW  - gravitation; methods: numerical; quasars: supermassive black holes; galaxies: star clusters: general; SUPERMASSIVE BLACK-HOLES; GALACTIC NUCLEI; GALAXY MERGERS; EVOLUTION; BINARIES; IMPLEMENTATION; PERTURBATIONS; SYSTEMS; SPACE; CODE; 115 Astronomy, Space science 
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