The parallel versions of the programs dscf and grad can use an
integral statistics file as input which is generated by a parallel
statistics run. This preparation step is done automatically by the
grad that are called in the parallel
This serial step to determine a task distribution for the later parallel run can be lengthy for larger cases, and it is recommended to skip this step and let the programs determine the optimal task distribution dynamically during the parallel execution. This can be done by setting the environment variable
For the additional mandatory or optional input for parallel runs with the ricc2 program see Section 9.6.