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Nyuzi Processor

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Nyuzi is an experimental multicore GPGPU processor. It supports vector floating point, hardware multithreading, and cache coherence. The SystemVerilog-based hardware implementation is synthesizable and runs on FPGA. This project also includes an LLVM-based C++ toolchain, tests, and other tools. It is useful for microarchitecture experimentation, performance modeling, and parallel software development.

Mailing list:!forum/nyuzi-processor-dev
License: Apache 2.0

Getting Started

The following instructions explain how to set up the Nyuzi development environment. This includes an emulator and cycle-accurate hardware simulator, which allow hardware and software development without an FPGA.

Install Prerequisites

Linux (Ubuntu)

This requires Ubuntu 14 or later to get the proper package versions. It should work for other distributions, but you will probably need to change some package names.

sudo apt-get -y install autoconf cmake make gcc g++ bison flex python perl emacs openjdk-7-jdk swig zlib1g-dev python-dev libxml2-dev libedit-dev ncurses-dev libsdl2-dev gtkwave imagemagick 

Emacs is used for verilog-mode AUTO macros. The makefile executes this operation in batch mode


These instructions assume Mavericks or later. If you don't have XCode, install the command line compiler like this:

xcode-select --install

The next command installs the remaining packages, assuming you've installed MacPorts:

sudo port install cmake bison swig swig-python imagemagick libsdl2 curl emacs

You may optionally install GTKWave for analyzing waveform files.


I have not tested this on Windows. Many of the libraries are cross platform, so it should be possible to port it. But the easiest route is probably to run Linux under a virtual machine like VirtualBox.

Build (Linux & MacOS)

Download and build Verilator as follows (although some Linux package managers have it, it is way out of date). From the top level directory of this project:

git clone tools/verilator
cd tools/verilator 
git checkout verilator_3_876
sudo make install
cd ../..

Download and build the Nyuzi toolchain as follows (This clones my repo. If you want to use your own fork, change the clone URL):

git clone tools/NyuziToolchain
cd tools/NyuziToolchain
mkdir build
cd build
cmake .. 
sudo make install
cd ../../..

Build remaining tools and hardware model. Run unit tests.

make test

What next?

Sample applications are available in software/apps. You can run these in the emulator by typing 'make run' (some need 3rd party data files, details are in the READMEs in those directories).

For example, this will render a 3D model:

cd software/apps/sceneview
make run

Running on FPGA

See instructions in hardware/fpga/de2-115/

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