PSCToolkit is new software framework for solving large and sparse linear systems on current hybrid architectures, from small servers to high-end supercomputers, embedding multi-core CPUs and Nvidia GPUs at the node level. The framework has a modular structure and is composed of three main components which separate basic functionalities for managing distributed sparse matrices and executing some sparse matrix computations involved in iterative Krylov projection methods, eventually exploiting multi-threading and CUDA-based programming models, from the functionalities for setup and application of different types of one-level and multi-level algebraic preconditioners.

• 🌍 Website: https://psctoolkit.github.io
• 📬 E-Mail: psctoolkit@na.iac.cnr.it

📚 The main scientific libraries are:

• 📘 PSBLAS
• 📘 AMG4PSBLAS

❗ PSBLAS-EXT deprecation

• GPU/extension plugin: PSBLAS-EXT
• Status: discontinued; features merged into PSBLAS since 3.9
• Use it only if you must build against PSBLAS $<$ 3.9
• Migration: routine names are largely compatible—prefer upgrading to PSBLAS $>=$ 3.9 as soon as possible

To get them you can use the repository: https://github.com/psctoolkit/psctoolkit which has two branches inside:

• a master branch, containing the pointers to the latest release
• a development branch, containing pointers to compatible commits of the development.

You can clone the master version by doing:

git clone git@github.com:psctoolkit/psctoolkit.git
cd psctoolkit
git submodule update --init --recursive

while for obtaining the development version you should do:

git clone git@github.com:psctoolkit/psctoolkit.git
cd psctoolkit
git checkout development
git submodule update --init --recursive

For both libraries, releases of the source code are available on the dedicated repositories:

• 📘 PSBLAS
• 📘 AMG4PSBLAS

The master version is available as a Docker image with

docker pull psctoolkit/psctoolkit
docker run -it psctoolkit:latest /bin/bash

while the development version can be obtained by doing:

docker pull psctoolkit/psctoolkit
docker run -it psctoolkit:development /bin/bash

In both cases, it can be buil directly from the repository

git clone git@github.com:psctoolkit/psctoolkit.git
cd psctoolkit
# If you want the master:
git submodule update --init --recursive
docker build -t psctoolkit .
# If you want the development:
git checkout development
git submodule update --init --recursive
docker build -t psctoolkit .

We have a Spack package for PSBLAS, which can be installed by doing

spack install psblas

The libraries are also available for the Fedora distro:

• PSBLAS
• AMG4PSBLAS

They can be installed by doing

dnf install packagename

See the Fedora help page for the usage of dnf, and PSBLAS and AMG4PSBLAS for the various packagename.