riscv-gnu-toolchain vs riscv-v-spec

riscv-gnu-toolchain

GNU toolchain for RISC-V, including GCC [Moved to: https://github.com/riscv-collab/riscv-gnu-toolchain] (by riscv)

Suggest topics

DISCONTINUED

Suggest alternative

Edit details

riscv-v-spec

Working draft of the proposed RISC-V V vector extension (by riscv)

Suggest topics

DISCONTINUED

Suggest alternative

Edit details

InfluxDB - Power Real-Time Data Analytics at Scale

Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

www.influxdata.com

featured

SaaSHub - Software Alternatives and Reviews

SaaSHub helps you find the best software and product alternatives

www.saashub.com

featured

riscv-gnu-toolchain		riscv-v-spec
	Project
2	Mentions	43
1,605	Stars	858
-	Growth	-
6.5	Activity	6.0
about 2 years ago	Latest Commit	2 months ago
C	Language	Assembly
GNU General Public License v3.0 or later	License	Creative Commons Attribution 4.0

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

riscv-gnu-toolchain

Posts with mentions or reviews of riscv-gnu-toolchain. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-05-30.

Allwinner D1 extensions
5 projects | /r/RISCV | 30 May 2022

... but it doesn't exist. It appears that it may have been deliberately deleted in the move from https://github.com/riscv/riscv-gnu-toolchain
How much time riscv-toolchain takes to setup?
2 projects | /r/RISCV | 16 Feb 2022

git clone --recursive https://github.com/riscv/riscv-gnu-toolchain

riscv-v-spec

Posts with mentions or reviews of riscv-v-spec. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-12-25.

Scaleway launches RISC-V servers
1 project | news.ycombinator.com | 3 Mar 2024

Here are some resources I can recommend:
RVV spec (also look at the examples in the repo): https://github.com/riscv/riscv-v-spec/blob/master/v-spec.ado...
RVV intrinsics viewer: https://dzaima.github.io/intrinsics-viewer
Tutorial: RISC-V Vector Extension Demystified (3 hour video going over every instruction): https://youtu.be/oTaOd8qr53U
RISC-V Vector extension in a nutshell: https://fprox.substack.com/p/risc-v-vector-extension-in-a-nu...
If you want to see a more complex example/real world application, then you might also be ibterested ib my article about vectorizing unicode conversions: https://camel-cdr.github.io/rvv-bench-results/articles/vecto...
In terms of development I'd recommend using qemu and a cross compiler, or if you want hardware try to get the kendryte k230 (currently the only sbc with rvv 1.0 support) or wait a bit for better hardware (BPI-F3 and sg2380 should release this year).
Cray-1 performance vs. modern CPUs
4 projects | news.ycombinator.com | 25 Dec 2023
x86 vs ARM; Vector and Matrix Extensions; How do they compare?
2 projects | /r/hardware | 9 Dec 2023

And this isn't just some theoretical or something unlikely to happen - the official spec already contains such a bug. If the writers of the spec can't get things right, even with the small amount of code in the spec, I don't have high hopes that less informed programmers will. RVV being absurdly complicated (IMO, compared to SVE2 and AVX10) doesn't help its cause here.
riscv64 is now an official Debian architecture (rebootstrap in progress)
3 projects | news.ycombinator.com | 23 Jul 2023
Vector vs SIMD
3 projects | /r/RISCV | 29 May 2023
LLVM's libc Gets Much Faster memcpy For RISC-V
1 project | /r/RISCV | 21 May 2023

Will the reference one actually be the most optimal one on future hardware?
Is there any good place to find a copy-paste-able quick reference on RISC-V extensions? Particularly for the vector extension
2 projects | /r/RISCV | 11 Apr 2023
Building a toolchain suitable for compiling V extension code
6 projects | /r/RISCV | 10 Apr 2023

I'll do a deep dive into the https://gms.tf/riscv-vector.html#getting-started tutorial, and probably pop the proverbial stack and just study RVV 0.7.1 on its own (using https://github.com/riscv/riscv-v-spec/releases/tag/0.7.1).
A weird idea for using RV32E on a RV32I core - multithreaded microcontrollers?
1 project | /r/RISCV | 21 Mar 2023

I see your point. You can file a request for it at https://github.com/riscv/riscv-v-spec/issues if you want to pitch it to the relevant ISA bodies. The bar for implementing it pretty high.
Examining the Top Five Fallacies About RISC-V
1 project | news.ycombinator.com | 17 Dec 2022

It's not "unusual"; using data registers for mask is a valid tradeoff especially for low-end implementations, whereas higher-end architectures can easily use shadow registers. Discussed in depth at https://github.com/riscv/riscv-v-spec/issues/811

What are some alternatives?

When comparing riscv-gnu-toolchain and riscv-v-spec you can also consider the following projects:

freedom-tools - Tools for SiFive's Freedom Platform

riscv-p-spec - RISC-V Packed SIMD Extension

riscv-binutils-gdb - RISC-V backports for binutils-gdb. Development is done upstream at the FSF.

highway - Performance-portable, length-agnostic SIMD with runtime dispatch

riscv-gnu-toolchain - GNU toolchain for RISC-V, including GCC

highway - Highway - A Modern Javascript Transitions Manager

riscv-bitmanip - Working draft of the proposed RISC-V Bitmanipulation extension

vroom - VRoom! RISC-V CPU

learn-fpga - Learning FPGA, yosys, nextpnr, and RISC-V

meetings - WebAssembly meetings (VC or in-person), agendas, and notes

rvv-encoder - RISC-V V Extension Encoder

riscv-gnu-toolchain vs freedom-tools riscv-v-spec vs riscv-p-spec riscv-gnu-toolchain vs riscv-binutils-gdb riscv-v-spec vs highway riscv-gnu-toolchain vs riscv-gnu-toolchain riscv-v-spec vs highway riscv-v-spec vs riscv-bitmanip riscv-v-spec vs vroom riscv-v-spec vs learn-fpga riscv-v-spec vs meetings riscv-v-spec vs rvv-encoder riscv-v-spec vs riscv-gnu-toolchain

Compare riscv-gnu-toolchain vs riscv-v-spec and see what are their differences.

riscv-gnu-toolchain

riscv-v-spec

riscv-gnu-toolchain

riscv-v-spec

What are some alternatives?