There are several steps required to set up an assignment in order to have logs kept properly and to allow students to receive basic testing feedback as they develop their submissions. See UtilizingSubmitLogs for details on how these logs may be used.
In this case for BitterSuite users, typical flags to computeMarks are -f -q -n -i
.
See that page and the BitterSuiteWalkthrough for more information.
As this will likely contain handmarking for TAs, frequent reference to MarkingScheme should be made.