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July 31, 2015: ViennaCL 1.7.0 released! [ChangeLog]
December 1, 2014: ViennaCLBench 1.0.0, a GUI-based benchmark using ViennaCL, released!

ViennaCL is a free open-source linear algebra library for computations on many-core architectures (GPUs, MIC) and multi-core CPUs. The library is written in C++ and supports CUDA, OpenCL, and OpenMP (including switches at runtime).

The highlights of the latest 1.7.x release family are:

  • Fast sparse matrix-matrix multiplications, outperforming CUBLAS and MKL.
  • Fine-grained parallel algebraic multigrid preconditioners for CPUs, Xeon Phis, and GPUs.
  • Fine-grained parallel incomplete LU factorization preconditioners for CPUs, Xeon Phis, and GPUs.

A Python wrapper named PyViennaCL is also available.