Summary report of working group 2: Computations for accelerator physics

The presentations in this working group were focused on methods that push the state of the art in computer modeling of particle accelerators through increased accuracy, speed of execution, breadth of physical models, validation, versatility of application or usability of computer codes. The topics covered during the workshop include: novel algorithms, reduced models, more efficient implementation (such as single core optimization and parallelization), next generation hardware (CPU, GPU, manycore), extension and integration of physical models and numerical tools, evaluation and numerical analysis of algorithms performance and stability, validation and verification.