The Pencil Code is a highly modular and higher-order finite-difference code for compressible hydrodynamic flows with magnetic fields, particles and chemical species, for Cartesian as well as curvilinear geometries, written predominantly in Fortran. The work on the code was initiated during the "Helmholtz Summer School on Super-computational Astrophysics" held in Potsdam (2001). Since then the Pencil Code has been used for different applications demonstrating its versatility. In the astrophysical context, few examples are: Turbulence simulations, astrophysical dynamos, radiative magnetohydrodynamics, self gravity and planetesimal formation, gravitational waves, interstellar dust etc. The code is hosted live at gitHub (https://github.com/pencil-code) with over 200 users, and about 80 developers and growing as anyone interested in using the code is welcome to join the consortium. Please see http://pencil-code.nordita.org/ for more information on downloading and using the code.
The annual pencil code user meeting has been organised since 2005 for,
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