A co-execution is the co-simulation execution of two analysis jobs that are executed in Abaqus/CAE in synchronization with one another using the same functionality as described in “Understanding analysis jobs,” Section 19.2. For more information on this analysis technique, see “Abaqus/Standard to Abaqus/Explicit co-simulation,” Section 17.3.1 of the Abaqus Analysis User's Manual, and “Abaqus/CFD to Abaqus/Standard or to Abaqus/Explicit co-simulation,” Section 17.3.2 of the Abaqus Analysis User's Manual.