A processor system and a processor readable medium, which implement a method for implementing multiple contexts on one or more SPE are disclosed. Code and/or data for a first and second contexts may be respectively stored simultaneously in first and second regions of an SPE's local memory, storing code and/or data for a second context in a second region of the local memory, the SPE may execute the first context while the second context waits. Code and/or data for the first context may be transferred from the first region to the second and code and/or data for the second context may be transferred from the second region to the first, and the SPE may execute the second context during a pause or stoppage of execution of the first context. Alternatively, the code and/or data for the second context may be transferred to another SPE's local memory.