We have verified the FM9801, a microprocessor design whose features include speculative execution, out-of-order issue and completion of instructions using Tomasulo's algorithm, and precise exceptions and interr
Code Issues Pull requests An out-of-order execution CPU simulator for CS2410 Computer Architecture course final project at the University of Pittsburgh. c simulator cpp architecture computer riscv computer-architecture risc risc-v tomasulo speculative pitt tomasulo-algorithm Updated Jun 4, 2023 C++...
R.M. Tomasulo (1967) An Efficient Algorithm for Exploiting Multiple Arithmetic Units IBM Journal of Research and Development 11 25–33 Google Scholar O. Mutlu, H. Kim, D. N. Armstrong, and Y. N. Patt, Understanding The Effects of Wrong-Path Memory References on Processor Performance, Pr...
Anshul Kumar, CSE IITD slide 16 Tomasulo’s scheme plus ROB... Anshul Kumar, CSE IITD slide 17 IssueIssue Get next instruction from instruction queue Check if there is a matching RS which is empty and an empty slot in ROB –no: structural hazard, instruction stalls –yes: issue the ins...
In this paper we describe and compare two methodologies for verifying the correctness of a speculative out-of-order execution system with interrupts. Both methods are deductive (we use PVS) and are based on refinement. The first proof is by direct refinement to a sequential system; the second ...