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COSMA: Distributed Communication-Optimal Matrix-Matrix Multiplication Library

Overview of package

Package: COSMA
Description: Distributed Communication-Optimal Matrix-Matrix Multiplication Library
For more information: https://github.com/eth-cscs/COSMA
Categories: SoftwareDevelopment
NumericalMethods
License: OpenSource (BSD 3-clause)

General Usage

COSMA is a parallel, high-performance, GPU-accelerated, matrix-matrix multiplication algorithm that is communication-optimal for all combinations of matrix dimensions, number of processors and memory sizes, without the need for any parameter tuning.

The following environmental variables have been defined:

  • $COSMA_ROOT has been set to the root of the cosma installation
  • $COSMA_LIBDIR points to the directory containing the libraries
  • $COSMA_INCDIR points to the directory containing the header files

You will probably wish to use these by adding the following flags to your compilation command (e.g. to CFLAGS in your Makefile):

  • -I$COSMA_INCDIR

and the following flags to your link command (e.g. LDFLAGS in your Makefile):

  • -L$COSMA_LIBDIR -Wl,-rpath,$COSMA_LIBDIR

Available versions by cluster

This section lists the available versions of the package COSMAon the UMD HPC clusters.

Versions available on the Zaratan cluster

Version Module tags CPU(s) optimized for GPU ready?
2.6.6 2.6.6 icelake, x86_64, zen2 Yes
2.5.1 2.5.1 zen2 Yes