TIL

RISC-V

Programming

https://csdiy.wiki/

二花说，刚起步，生态不完整，没有就业机会

RISC-V

About RISC-V

一种无版权争议的指令集，任何人都可以基于此开发操作系统，提供给人们使用，所以现在国家大力发展这方面的东西。

Roadmaps

RISC-V vs ARM vs x86

Comparing RISC-V, ARM, and x86 microprocessors involves examining their instruction set architectures (ISAs), performance, and use cases. Here's a structured overview:

Instruction Set Architectures

  • RISC-V
    • Type: Reduced Instruction Set Computing (RISC)
    • Open-source: Yes
    • Key Features: Modular, allows custom extensions, simplicity
    • Customization: High; organizations can freely modify the ISA14.
  • ARM
    • Type: Reduced Instruction Set Computing (RISC)
    • Open-source: No, but licensable
    • Key Features: Energy efficiency, compact designs
    • Customization: Limited by the licensing agreement with ARM34.
  • x86
    • Type: Complex Instruction Set Computing (CISC)
    • Open-source: No, proprietary by Intel and AMD
    • Key Features: Performance, wide range of instructions, complexity
    • Customization: Very limited due to proprietary nature235.

Performance and Efficiency

  • RISC-V
    • Performance: Currently lower compared to ARM and x86, but has potential due to flexibility and evolving ecosystem
    • Efficiency: Moderate; benefits from RISC principles but lacks the extensive optimization seen in ARM1620.
  • ARM
    • Performance: Very good for mobile and embedded applications; newer designs also compete in the server market
    • Efficiency: High; optimized for low power consumption, ideal for battery-powered devices3613.
  • x86
    • Performance: Highest, traditionally optimized for peak performance
    • Efficiency: Lower than ARM; higher power consumption due to complex instruction decoding61219.

Use Cases and Applications

  • RISC-V
    • Applications: Research, custom embedded systems, IoT devices
    • Advantages: Customizability, cost-effective, innovation-friendly14.
  • ARM
    • Applications: Mobile devices, embedded systems, some servers, IoT
    • Advantages: Energy efficiency, widespread adoption, reliable performance61321.
  • x86
    • Applications: Personal computers, laptops, servers, high-performance computing
    • Advantages: High performance, extensive software support, established market presence2513.

Summary

The choice between RISC-V, ARM, and x86 depends on the specific needs of the application:

  • RISC-V is ideal for projects needing high customization and cost-effective design.
  • ARM excels in energy efficiency and is preferred for mobile and embedded systems.
  • x86 is best for applications requiring high performance and extensive software compatibility.

Each ISA offers unique strengths, and the decision should be based on the specific criteria and objectives of the project.

[1] https://www.wevolver.com/article/risc-v-vs-arm [2] https://www.microcontrollertips.com/risc-v-vs-arm-vs-x86-whats-the-difference/ [3] https://emteria.com/blog/arm-vs-x86 [4] https://resources.system-analysis.cadence.com/blog/will-risc-v-replace-arm-in-embedded-systems [5] https://www.design-reuse-embedded.com/news/202104084/risc-v-vs-arm-vs-x86-ndash-what-39-s-the-difference/ [6] https://www.androidauthority.com/arm-vs-x86-key-differences-explained-568718/ [7] https://blog.paessler.com/risc-v-vs-arm-who-wins [8] [https://medium.com/cite/t:@aditya-sunjava/exploring-the-differences-arm-vs-risc-v-architecture-0f50cb838190] [9] https://forums.anandtech.com/threads/poll-x86-vs-arm-vs-risc-v-what-is-your-favourite-cpu-isa.2617190/ [10] https://www.jocheojeda.com/2024/05/23/understanding-cpu-architectures-arm-vs-x86/ [11] https://www.reddit.com/r/RISCV/comments/11mzbo7/arm_versus_riscv/ [12] https://www.reddit.com/r/RISCV/comments/kd321u/any_reason_for_riscv_or_anything_to_replace_x86/ [13] https://coffeebeans.io/blogs/arm-vs-x86-comparing-architectures-and-their-impact [14] https://picockpit.com/raspberry-pi/arm-vs-risc-v-vs-x86/ [15] https://www.fierceelectronics.com/analog/risc-v-vs-arm-processors-quick-comparison [16] https://www.quora.com/How-does-the-RISC-V-architecture-compare-to-Arm-and-x86-in-terms-of-performance-and-energy-efficiency [17] https://www.candtsolution.com/news_events-detail/what-is-the-difference-between-arm-and-x86/ [18] https://www.dfrobot.com/blog-13483.html [19] https://www.peila.co.il/blog/arm-vs-x86 [20] https://www.icdrex.com/risc-v-vs-arm-which-open-standard-risc-architecture-is-better-for-your-microchip-project/ [21] https://www.dfrobot.com/blog-13513.html [22] https://www.reddit.com/r/compsci/comments/ug1bgy/what_can_x86_do_while_arm_cannot/ [23] https://www.redhat.com/en/topics/linux/ARM-vs-x86 [24] https://www.linkedin.com/pulse/risc-v-going-kill-arm-rahul-yadav-yarff [25] https://www.hpcwire.com/2022/11/18/risc-v-is-far-from-being-an-alternative-to-x86-and-arm-in-hpc/ [26] https://www.esper.io/blog/arm-vs-x86-whats-the-difference [27] https://www.criticallink.com/2024/03/arm-vs-risc-v/

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