Embodiments described herein provide an apparatus comprising a processor to configure a plurality of contexts of a command engine to execute a graphics workload comprising a plurality of walkers, allocate, from a pool of execution units of a graphics processor, a subset of execution units to each walker in the plurality of walkers based at least in part on the predetermined number of walkers configured for the context, for each context in the plurality of contexts, dispatch one or more walkers of the plurality of walkers to the execution units, and upon dispatch of the one or more walkers of the plurality of walkers, write an opcode to a computer-readable memory indicating that the dispatch of the walker is complete, wherein the opcode comprises dependency data for the one or more walkers of the plurality of walkers. Other embodiments may be described and claimed.