DEVS is a sound formal modeling and simulation (M&S) framework based on generic dynamic system concepts. Cell-DEVS is a formalism for cell-shaped models based on DEVS. This work presents a new simulation technique for execution of DEVS and Cell- DEVS models in parallel/distributed environments. The parallel simulator is based on Time Warp, and developed as a new simulation engine for CD++, a M&S toolkit that implements DEVS and Cell-DEVS theories. The technique uses a non-hierarchical approach that simplifies the structure of the simulator and reduces the communication overhead. The results obtained allowed us to achieve considerable speedups.