Getting started
Create a free account, open the dashboard, and start your first run. Cmulation provisions the simulator for you — there is nothing to install locally. Your Free plan includes a monthly simulation quota to evaluate with.
Documentation
Learn how to upload Verilog or SPICE, run in the cloud, and read your waveforms and logs. For CI and automation, see the API & developers page.
Uploading Verilog
Upload a single Verilog (.v) file, or a multi-file archive with a named top module. Cmulation compiles and simulates your design in the cloud, then returns logs, a pass/fail, and VCD waveforms.
Uploading SPICE
Submit a SPICE netlist file, or an archive with a named top cell. Your circuit runs on a managed simulator, and the results and logs are captured for inspection.
Reading waveforms (VCD)
Verilog runs produce VCD waveform output alongside the logs. Open a completed run to view signal activity and confirm the design behaves as your testbench expects.
Diagnostic AI
Run-scoped, plain-language diagnostics are on the roadmap — held until our privacy review completes. This feature is not available in the product today.
Projects & teams
Group related runs into projects, and invite teammates into a shared, tenant-isolated workspace with owner, admin, and member roles.
Sim-Credits & billing
Each plan includes a monthly simulation quota. After the quota is used, each successful simulation draws one Sim-Credit from your balance — owners and admins on Pro+ and Ultra can buy credit packs from the dashboard.
Integrating with CI or scripts?
See the Developers page for API tokens, simulation endpoints, and a CI quickstart.
Developers / API