In this talk Roger Espasa described Semidynamics' vector unit implementing the RVV-010 specification and he focused on the challenges of supporting out-of-order execution for vector instructions. He covered the challenges of renaming vector registers in the presence of LMUL, SEW, narrowing & widening and the different flavors of masking in the RV vector ISA. He also provided an overview of the vector load/store pipeline.
The RISC-V Summit - December 6-8, 2021 in San Francisco, CA.