Muticore

- Overview

• RVX does not support cache coherency between multiple cores. Therefore, consistency management is also required across cores (see Data Consistency Management).

• It is recommended that each core be used for independent tasks.

• Parallel processing using multiple cores to accelerate a single task is not recommended.

- Programming Guidelines

• All cores execute the same program, and their behavior can be differentiated using their own EXCLUSIVE_ID.

  • #include "core_dependent.h"

• Custom lock and barrier mechanisms are provided for synchronization.

  • #include "ervp_lock.h"

  • #include "ervp_barrier.h"

  • The “A” extension of the RISC-V ISA is not supported, and the use of assembly language is discouraged.

pthread

Not officially supported.

Miscellaneous

• Variables using bit fields must be declared as int or unsigned int.

• Only the C language should be used; use of assembly language is discouraged.

  • Assembly is not guaranteed to work reliably as its behavior can vary depending on the target CPU.

Navigate

• Home

• Top

• Standard Library Porting

• Data Consistency Management

• Caching Region Assignment for Global Variables