Vortex GPGPU

Vortex is a full-stack open-source RISC-V GPGPU.

Specifications

• Support RISC-V RV32IMAF and RV64IMAFD
• Microarchitecture:
  • configurable number of cores, warps, and threads.
  • configurable number of ALU, FPU, LSU, and SFU units per core.
  • configurable pipeline issue width.
  • optional local memory, L1, L2, and L3 caches.
• Software:
  • OpenCL 1.2 Support.
• Supported FPGAs:
  • Altera Arria 10
  • Altera Stratix 10
  • Xilinx Alveo U50, U250, U280
  • Xilinx Versal VCK5000

Directory structure

• doc: Documentation.
• hw: Hardware sources.
• driver: Host drivers repository.
• runtime: Kernel Runtime software.
• sim: Simulators repository.
• tests: Tests repository.
• ci: Continuous integration scripts.
• miscs: Miscellaneous resources.

Build Instructions

More detailed build instructions can be found here.

Supported OS Platforms

• Ubuntu 18.04, 20.04
• Centos 7

Toolchain Dependencies

• POCL
• LLVM
• RISCV-GNU-TOOLCHAIN
• Verilator
• FpNew
• SoftFloat
• Ramulator
• Yosys
• Sv2v

Install development tools

$ sudo apt-get install build-essential
$ sudo apt-get install git

Install Vortex codebase

$ git clone --depth=1 --recursive https://github.com/vortexgpgpu/vortex.git
$ cd Vortex

Install prebuilt toolchain

# By default, the toolchain will install to /opt folder which requires sudo access. Alternatively, you could also install the toolchain to a different location of your choice by setting TOOLDIR

$ TOOLDIR=$HOME/tools ./ci/toolchain_install.sh --all

Set up environment variables

$ source ./ci/toolchain_env.sh

Building Vortex

$ mkdir build
$ cd build
$ TOOLDIR=$HOME/tools ../configure
$ make

Quick demo running vecadd OpenCL kernel on 2 cores

$ ./ci/blackbox.sh --cores=2 --app=vecadd