Introduction

Ventus GPGPU is a GPGPU architecture for RISC-V.
This article references this repository: https://github.com/THU-DSP-LAB/llvm-project.

Install dependencies

sudo apt install -y git build-essential clang cmake ninja-build ccache zlib1g-dev libtool autoconf automake device-tree-compiler bsdmainutils ruby clinfo

Download files

TIP

Create a folder and clone all the repositories into this directory. In the following, J142 is used as the folder name.

• llvm-ventus : git clone https://github.com/THU-DSP-LAB/llvm-project.git
• pocl : git clone https://github.com/THU-DSP-LAB/pocl.git
• ocl-icd : git clone https://github.com/OCL-dev/ocl-icd.git
• isa-simulator(spike) : git clone https://github.com/THU-DSP-LAB/ventus-gpgpu-isa-simulator.git
• driver : git clone https://github.com/THU-DSP-LAB/ventus-driver.git
• rodinia : git clone https://github.com/THU-DSP-LAB/gpu-rodinia.git

Set environment variables

export VENTUS_INSTALL_PREFIX=/root/J142/llvm-project/install
export SPIKE_TARGET_DIR=${VENTUS_INSTALL_PREFIX}
export LD_LIBRARY_PATH=${VENTUS_INSTALL_PREFIX}/lib
export OCL_ICD_VENDORS=${VENTUS_INSTALL_PREFIX}/lib/libpocl.so
export POCL_DEVICES="ventus"
export PATH=/root/J142/llvm-project/build/bin:$PATH
export BUILD_TYPE=Debug

Build the compiler

cd J142/llvm-project
./build-ventus.sh

Check installation status

cd J142/pocl/build/bin
./poclcc -l

Run the test cases

cd J142/pocl/build/examples/vecadd
./vecadd