Master/slave speculative parallelization

Master/Slave Speculative Parallelization (MSSP) is an execution paradigm for improving the execution rate of sequential programs by parallelizing them speculatively for execution on a multiprocessor. In MSSP, one processor—the master—executes an approximate version of the program to compute selected values that the full program’s execution is expected to compute. The master’s results are checked by slave processors that execute the original program. This validation is parallelized by cutting the program’s execution into tasks. Each slave uses its predicted inputs (as computed by the master) to validate the input predictions of the next task, inductively validating the entire execution. The performance of MSSP is largely determined by the execution rate of the approximate program. Since approximate code has no correctness requirements (in essence it is a software value predictor), it can be optimized more effectively than traditionally generated code. It is free to sacrifice...

• Type: Conference
• Year: 2002
• Where: MICRO
• Authors: Craig B. Zilles, Gurindar S. Sohi
• Keywords: Execution Paradigm, Execution Rate, Hardware, MICRO 2002, Program’s Execution