NBSymple is a numerical code which numerically integrates the equation of motions of N 'particles' interacting via Newtonian gravitation and move in an external galactic smooth field. The force evaluation on every particle is done by mean of direct summation of the contribution of all the other system's particle, avoiding truncation error. The time integration is done with second-order and sixth-order symplectic schemes. NBSymple has been parallelized twice, by mean of the Computer Unified Device Architecture to make the all-pair force evaluation as fast as possible on high-performance Graphic Processing Units NVIDIA TESLA C 1060, while the O(N) computations are distributed on various CPUs by mean of OpenMP Application Program. The code works both in single precision floating point arithmetics or in double precision. The use of single precision allows the use at best of the GPU performances but, of course, limits the precision of simulation in some critical situations. We find a good compromise in using a software reconstruction of double precision for those variables that are most critical for the overall precision of the code.

The new galaxy integral-field spectroscopy tool (nGIST) is a pipeline for the analysis of modern galaxy integral field spectroscopic (IFS) data. Borne out of the need for a robust but flexible analysis pipeline for an influx of MUSE and other galaxy IFS data, nGIST is the continuation of the archived GIST pipeline (Bittner+2019). nGIST improves memory and parallelisation management and deals better with longer optical wavelength ranges and sky residuals that are particularly problematic at redder wavelengths (>7000 Angstrom).

Notable performance improvements include memory and parallelisation optimisation, and smaller and more convenient output files. Science improvements are ongoing, but include an an additional module to create continuum-only cubes, better handling of cube variance, better bias estimation for stellar kinematics, and additional routines for some modules, including a pPXF-based emission line fitter. 2D maps of derived stellar and ionised gas output products are now provided as standard. nGIST input is a single, human-readable configuration file where the user can specify over 40 input parameters. An updated version of Mapviewer is included in the distribution for a quick-look interface to view results.