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Devito-on-AMD.md

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  1. NOTE: Haven't tried with MPI yet
  2. NOTE: Haven't tried AMD GPUs yet

The conda-based installation procedure worked like a charm.

Testbed hardware:

Model name:          AMD EPYC 7V12 64-Core Processor

Testbed OS:

Ubuntu 18.04.4 LTS (Bionic Beaver)

on a fresh install.

  • install compilers
sudo apt-get install -y gcc g++
  • install miniconda
wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
bash Miniconda3....sh
<follow instructions>
  • install Devito in development mode
git clone https://github.com/devitocodes/devito.git
cd devito
conda env create -f environment-dev.yml
source activate devito
pip install -e .

Now let's try to install AMD's version of LLVM for OpenMP 5 offloading. The compiler is named AOMP (while the classic AMD compiler for CPU is AOCC). The steps below are partly taken from here

wget https://github.com/ROCm-Developer-Tools/aomp/releases/download/rel_11.5-0/aomp_Ubuntu1804_11.5-0_amd64.deb
sudo dpkg -i aomp_Ubuntu1804_11.5-0_amd64.deb
echo 'SUBSYSTEM=="kfd", KERNEL=="kfd", TAG+="uaccess", GROUP="video"' | sudo tee /etc/udev/rules.d/70-kfd.rules
wget -qO - http://repo.radeon.com/rocm/apt/debian/rocm.gpg.key | sudo apt-key add -
echo 'deb [arch=amd64] http://repo.radeon.com/rocm/apt/debian/ xenial main' | sudo tee /etc/apt/sources.list.d/rocm.list
sudo apt update
sudo apt install rock-dkms -y

and finally (fingers crossed):

sudo reboot

and once back:

sudo usermod -a -G video $USER

Notes

  • Use aompcc not clang to compile. aompcc is a wrapper around clang which adds all the necessary flags for GPU offloading. Hence, use DEVITO_ARCH=aompcc.

Radeontop

Not quite cute as nvtop, but still handy.

Installation:

cd ~
sudo apt-get install libdrm-dev libncurses-dev libpciaccess-dev libxcb-randr0-dev libxcb-dri2-0-dev pkg-config
git clone https://github.com/clbr/radeontop.git
cd radeontop
CC=clang make

Make it in PATH forever

sudo cp radeontop /usr/local/bin/

Use it

sudo radeontop