RISC-V variants

Some of the wide range of applications where variants of the RISC-V architecture are gaining significant usage are:

• Artificial intelligence and machine learning: Esperanto Technologies has developed a system-on-chip (SoC) containing over 1,000 RISC-V processors and placed 6 of these chips on a single PCIe card. This design is optimized for high-performance machine learning recommendation workloads in large data centers while consuming minimum power.
• Embedded systems: The Efinix VexRiscv core is a soft CPU intended for implementation in an FPGA. The VexRiscv uses the RV32I ISA with M and C extensions.

  A complete SoC implementation includes the CPU, memory, and a selectable set of I/O interfaces such as general-purpose I/O, timers, serial interfaces, and chip-to-chip communication interfaces such as Serial Peripheral Interface (SPI).

  Extreme-scale computing: Several efforts are underway to develop High-Performance Computing (HPC) systems, commonly...