Verilator Performance

Hi, We are using VTOC today and we are evaluating migration to Verilator. The main issue seems to be performance. We found out on our tests (what was already known from the wiki) that VTOC is about 2-4 times faster. Are there any plans to improve Verilator's performance? Thanks,

Amir

Replies (1)

RE: Verilator Performance - Added by Wilson Snyder over 2 years ago

I don't know much about VTOC except for that result.

There's always things to improve performance, but I'm not sure of anything general that would make Verilator 4x slower, nor the converse - anything that could make it that much faster maybe even with a complete redesign. However, there could easily be design specific issues that yield 4x differences.

Did you follow the benchmarking guidelines in the manual? (Esp no UNOPTFLAT and -O2)

Using prof-cfuncs, what shows up as being the critical verilog code, and what % of the time is it using?

Can you run with --stats, and filter the __stats file from any company specifics and post it?

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