verilator
Verilator open-source SystemVerilog simulator and lint system (by verilator)
cva6
The CORE-V CVA6 is an Application class 6-stage RISC-V CPU capable of booting Linux (by openhwgroup)
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| verilator | cva6 | |
|---|---|---|
| 11 | 10 | |
| 2,083 | 2,085 | |
| 4.4% | 4.4% | |
| 9.8 | 9.7 | |
| 7 days ago | 1 day ago | |
| C++ | Assembly | |
| GNU Lesser General Public License v3.0 only | GNU General Public License v3.0 or later |
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.
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.
verilator
Posts with mentions or reviews of verilator.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-10-11.
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What's new for RISC-V in LLVM 17
You may want to check out Verilator:
https://verilator.org/
- How to run & simulate system verilog files on VScode?
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Choosing a Verification Methodology
relevant issue
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Designing Billions of Circuits with Code
One notable exception is Verilator which is growing fast and competes welll with commercial Verilog simulators (https://github.com/verilator/verilator)
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Error when running cocotb using cocotb-test
It is 4.106, check https://github.com/verilator/verilator/issues/2778 for more details.
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Verilator: Suggestions for verification framework?
Yeah, there is currently a bug and only one specific version of verilator works with cocotb (4.106). Hopefully it will be fixed soon. Go make noise here: https://github.com/verilator/verilator/issues/2778.
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Vitis HLS and Verilator
Okay, made it. Problem is, that my account is flagged as soon as I created it, I am marked as "spammy", and my "comments will only be shown in staff mode". https://github.com/verilator/verilator/issues/3159
- Attention to everyone that is using Verilator and C++! DO NOT update your GCC Package to version 11.1, because it will cause Verilator's object files to fail to compile properly. I have been dealing with this issue for four days straight and have only now found the solution. You have been warned.
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Systemverilog / verilog functional editor not like vivado
If you will help me with systemverilog black box discusion (I have very low systemverilog experience) and verilator will get update then I will upload on github plugin to Sublime Text which lint whole file every time when you stop typing. Currently I have plugin based on Vivado's compiler, but compilation of simple verilog file takes 1'400ms...
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eProcessor is a project that will create a open source RISC-V core for High Performance Computing (HPC)
You have verilator which is a open source simulator , so it is feasible that a "user" could fix a bug or implement a feature (i does not have to be some individual, a business or a university could do it to).
cva6
Posts with mentions or reviews of cva6.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-03-08.
- CVA6 – an Application class 6-stage RISC-V CPU capable of booting Linux
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Recommendations for RISC-V on FPGA
Hello. I'm looking into implementing RISC-V on an FPGA for a school project. The two repos I'm looking into using are the Ariane and RocketChip repos. Both look actively maintained, but RocketChip has more recent releases, and it's used by this other repo that creates a block design in Vivado with the RISC-V RTL. However, we would also like to be able to make changes to the core, and I'm afraid that scala/Chisel might be difficult to learn. Ariane looks like SystemVerilog while RocketChip is mostly Chisel. Does any have recommendations on which RISC-V repo would be good to use for a project?
- The CORE-V CVA6 is a RISC-V CPU capable of booting Linux
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Capital required to design and manufacture smartphones/computers in US
There are 108 RISC-V cores that have been created so far (according to this list), but only a couple are 64 bit, open source and powerful enough that you would want to use them (like Shakti, CVA6 and NutShell)
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Yun, the first tape-out of CVA6 (Ariane) with Ara vector co-processor SoC manufactured
The source code of Ara as well as Ariane, also known as CVA6 is available on GitHub.
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Some data points on Vivado performance on Ryzen and Alder Lake
I made a post about this here not too long ago, but I think it would be really useful to come up with a Vivado benchmark, in the form of a standardized large and representative design. I was curious about Alder Lake performance too, and compared my new 12700K workstation against my laptop with this open source RISC-V CPU: https://github.com/openhwgroup/cva6
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What is Purism's roadmap for open-source hardware/schematics?
When the OpenHW Group was created in 2019, I had some hope that Alibaba or NXP (who are in the OpenHW Group) would release an open hardware RISC-V processor, but it looks like they are not making any public commits to the CVA6 core, so I doubt that we are ever going to see the source code of Alibaba's XT910 or NXP's Chassis RISC-V processor.
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XiangShan open-source 64-bit RISC-V processor to rival Arm Cortex-A76
Ariane is now cva6 (it moved to a industry supported non-profit).
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How many more years until we have a completely open source RISC-V SOC?
At this stage, it could make sense for e.g. universities to start developing peripherals & controllers targeted at ASIC rather than creating yet-another-core (https://riscv.org/exchange/cores-socs/ has 107 lines already for cores), leveraging an OSHW ASIC-proven core from e.g. the OpenHW group (https://github.com/openhwgroup/cva6). Manufacturing in not-so-old processes is affordable for teaching institutions (e.g. https://europractice-ic.com/ in Europe), and taping out working cores is no longer a 'new' thing (e.g. http://asic.ethz.ch/all/years.html ).
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OpenHW Group and Mitacs announce a $22.5M research program for open-source processors
Looking at the github of the openhw group looks like the license is granting patents to the project. So it looks ok.
What are some alternatives?
When comparing verilator and cva6 you can also consider the following projects:
wavedrom - :ocean: Digital timing diagram rendering engine
cv32e40p - CV32E40P is an in-order 4-stage RISC-V RV32IMFCXpulp CPU based on RI5CY from PULP-Platform
HLS-Tiny-Tutorials - This is forked from Xilinx HLS-Tiny-Tutorial. I'm learning HLS and adding Verilator testbench to verify the generated RTL
litex - Build your hardware, easily!
riscv_vhdl - Portable RISC-V System-on-Chip implementation: RTL, debugger and simulators
riscv-cores-list - RISC-V Cores, SoC platforms and SoCs
signalflip-js - verilator testbench w/ Javascript using N-API
Surelog - SystemVerilog 2017 Pre-processor, Parser, Elaborator, UHDM Compiler. Provides IEEE Design/TB C/C++ VPI and Python AST API. Compiles on Linux gcc, Windows msys2-gcc & msvc, OsX
litedram - Small footprint and configurable DRAM core
sphinxcontrib-hdl-diagrams - Sphinx Extension which generates various types of diagrams from Verilog code.
ara - The PULP Ara is a 64-bit Vector Unit, compatible with the RISC-V Vector Extension Version 1.0, working as a coprocessor to CORE-V's CVA6 core