Another aspect of composability is defined by workflow optimization. For example, the FHI-AIMS calculator facilitates the creation of automatic convergence workflows, atomate2 contains a code-agnostic job that performs a series of consecutive code runs with changing inputs, until the absolute difference between the selected result values in two subsequent runs becomes smaller than a predefined value. This job has been used to achieve the k -point convergence of energy in static point calculations, as well as the band gap value convergence within the GW framework with respect to the number of frequency points, basis set size, and k -point grid used for the self-energy calculation.