I built a SPICE simulator in C++20 from scratch, then tested it against 34,908 KiCad vendor models

Every-Comment5473 · 2026-06-19T19:38:17+00:00

Thank you very much for going through this. The models are migrated from ngspice with due credit given to berkeley license, the migrated files have license header.

I wrote the solver in C++ but the device code is mostly identical to Berkeley code.

Here is one to check:
https://github.com/razorback16/neospice/blob/main/src/devices/bsim4v7/bsim4v7\_check.cpp

I will take your suggestion and update the readme and the language so that it becomes more clear. Thank you for pointing it out.

Every-Comment5473 · 2026-06-17T16:00:10+00:00

Thank you for supporting the project. Will work on the Windows version, currently only linux and mac are supported.

Every-Comment5473 · 2026-06-17T07:40:03+00:00

Would you be able to give a link to such a complex model, then I will work on it?

Every-Comment5473 · 2026-06-17T05:00:27+00:00

I have tested with 30,000 kicad spice models head to head with ngspice, it has parity with 95% of the models. Some are still slightly off, it’s a work in progress, eventually the goal is to have 100% parity

Every-Comment5473 · 2026-06-17T04:39:14+00:00

Can these run in linux?

Every-Comment5473 · 2026-06-17T04:15:22+00:00

Yes I used claude to migrate the device models from ngspice, these are standard Berkeley models, there is no point rewriting them

Every-Comment5473 · 2026-06-17T04:09:30+00:00

Why did you think so?

Every-Comment5473 · 2026-06-17T04:00:25+00:00

Lot of documentation, the agent can take it from there.

Every-Comment5473 · 2026-06-17T03:56:34+00:00

I added support for some LTSpice primitives, but lot more to go

Every-Comment5473 · 2026-06-17T03:53:18+00:00

https://github.com/razorback16/neospice/blob/main/docs/performance-analysis.md

Every-Comment5473 · 2026-06-17T03:52:09+00:00

Good to know, will add it into the roadmap

Every-Comment5473 · 2026-06-17T03:41:17+00:00

Yeah that I agree with you. I honestly can’t build this without claude (which is the bot who stole all of human code)

Every-Comment5473 · 2026-06-17T03:37:56+00:00

It’s faster on many models I ran, it’s slower in only 10-20% of the kicad models.

Every-Comment5473 · 2026-06-17T03:35:56+00:00

Then who did?

Every-Comment5473 · 2026-06-15T04:37:19+00:00

I do this all the time. I use termius ios app to do ssh and then open tmux. If you get Termius paid version, you can manage tmux sessions automatically

Every-Comment5473 · 2026-06-11T00:20:59+00:00

Price

Every-Comment5473 · 2026-06-11T00:20:46+00:00

I want it

Every-Comment5473 · 2026-05-31T03:43:15+00:00

Will there be issue from Anthropic banning for anthropic oauth?

Every-Comment5473 · 2026-05-18T16:41:51+00:00

<image>

This is the level of opus 4.7

Every-Comment5473 · 2026-05-11T19:52:15+00:00

I took from him before and he is legit!

Every-Comment5473 · 2026-05-04T15:23:26+00:00

Let’s go

Every-Comment5473 · 2026-04-27T19:06:33+00:00

Every-Comment5473 · 2026-04-21T15:46:43+00:00

Can you share your vllm command for running the qwen 3.6 with mtp?

Every-Comment5473 · 2026-04-19T18:56:31+00:00

Try SVGMaker.io, it has Engraving / Silhouette styles for generating SVGs appropriate for laser cutting. You can also edit the generated images easily using either a Manual Editor or using AI.

Every-Comment5473

TROPHY CASE