Z4c
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Z4c
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Cactus Code Thorn Z4c Author(s) : Erik Schnetter <[email protected]> Maintainer(s): Erik Schnetter <[email protected]> Licence : LGPL -------------------------------------------------------------------------- 1. Purpose Solve the Einstein equations in the Z4c formulation David Hilditch, Sebastiano Bernuzzi, Marcus Thierfelder, Zhoujian Cao, Wolfgang Tichy, Bernd Brügmann: Compact binary evolutions with the Z4c formulation, Phys. Rev. D 88, 084057 (2013), DOI: 10.1103/PhysRevD.88.084057, arXiv:1212.2901 [gr-qc]. 2. Notes on floating point operations: We use fourth order finite differencing. all first derivatives: 21 flop all first and second derivatives: 126 flop first derivatives: Kh, At, Gamt, Theta: 11 variables first and derivatives: chi, gammat, alphaG, betaG: 11 variables Total cost for derivatives: 1617 flop RHS kernel: 1865 flop Upwinded advection and dissipation: 90 flop per variable Total cost for upwinded advection and dissipation: 1980 flop Total cost for RHS: 5462 flop