US Patent 7409500 Systems and methods for employing speculative fills

Multi-processor systems and methods are disclosed. One embodiment may comprise a multi-processor system with a processor having a processor pipeline that executes program instructions with data from speculative data fills that are provided in response to source requests. The multi-processor system may comprise a first cache that retains cache data associated with program instructions employing data from speculative data fills, and a second cache that retains cache data associated with data from speculative data fills that have been determined to be coherent.