SimBricks – Modular Full-System Simulation for HW-SW Systems
Hi HN, we are building SimBricks, an open-source simulation framework for heterogeneous systems, especially with custom hardware. SimBricks modularly combines existing simulators for machines, networks, and hardware, allowing you to build, test, and evaluate intricate complete systems in a virtual environment. Head over to the SimBricks website (https://simbricks.github.io/, also has a quick demo video) to learn more. We have pre-built docker images, and you can even immediately play around on codespaces. Concrete use-cases: - Evaluate HW accelerators, from early design with…
SimBricks – Modular Full-System Simulation for HW-SW Systems launched on May 8, 2024 with 67 votes, #609 of 4,539 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
SimBricks is an open-source simulation framework that combines existing simulators for machines, networks, and hardware to model complete heterogeneous systems in a virtual environment. Designed for hardware and software engineers, it enables evaluation of custom hardware accelerators, network protocols, and complex integrated systems by allowing users to test behavioral models through full Verilog implementations alongside complete operating systems and applications. The project provides pre-built Docker images and immediate access through GitHub Codespaces for testing.
written from the facts on this page · September 2026
From the sources
SimBricks is an open-source, modular simulation framework enabling full end-to-end evaluation of modern heterogeneous systems by combining battle-tested simulators for different system components like machines (e.g. QEMU, gem5, Simics), hardware components (e.g. Verilator, Tofino, FEMU SSD), and networks (e.g. ns-3, OMNeT++). SimBricks is fast, scalable, accurate and deterministically connects and
For the teams designing chips, accelerators, NICs, storage and the systems they go into. SimBricks combines the simulators you already use into one complete virtual system, so you can measure end-to-end performance years before the hardware exists A virtual prototype of the whole system, from a single machine to a network of them: simulated processors, accelerators, NICs, storage and networks, running your real, unmodified software stack. Your own design goes in as one of the components, as a model or as RTL. No hardware required. Queueing and contention between components, the interplay of hardware, driver and operating system, the way a real application drives your design. These effects…from simbricks.github.io
In the maker’s words, at launch
Hi HN, we are building SimBricks, an open-source simulation framework for heterogeneous systems, especially with custom hardware. SimBricks modularly combines existing simulators for machines, networks, and hardware, allowing you to build, test, and evaluate intricate complete systems in a virtual environment. Head…
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Source: Show HN post ↗ · launch text quoted in part
