CarpetX, a new driver for the Einstein Toolkit based on AMReX, is now available for testing. A driver in the Einstein Toolkit is responsible for basic computational algorithms such as adaptive mesh refinement, parallelism, inter-processes communication, or GPU offloading. Thorns can then implement the physics bits and discretization methods, relying on the driver to stitch everything together into a single application. CarpetX offers a range of new features for the Einstein Toolkit that are interesting for hydrodynamics or magnetic fields (staggered grids, refluxing), improved performance (multi-threading, GPUs, scalability, I/O), and additional safety features that prevent or catch programming errors (uninitialized grid points, inconsistent definitions).
This list is used in conjunction with the wiki and issue tracker on CarpetX's source code repository as well as the Gitter chat.
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