Feedstock license: BSD-3-Clause
Home: https://github.com/eth-cscs/COSTA
Package license: BSD-3-Clause
Summary: Communication-Optimal Shuffle & Transpose Algorithm (COSTA) with and without ScaLAPACK wrappers for drop-in replacement
Development: https://github.com/eth-cscs/COSTA
Documentation: https://github.com/eth-cscs/COSTA
COSTA is a communication-optimal, highly-optimised algorithm for data redistribution accross multiple processors, using MPI and OpenMP and offering the possibility to transpose and scale some or all data. It implements ScaLAPACK routines for matrix scale & transpose operations (sub(C) = alpha * sub(A)^T + beta * C, provided by pxtran(u)) and data redistribution (sub(C) = sub(A), provided by pxgemr2d) and outperforms other ScaLAPACK implementations by orders of magnitude in some cases. Unlike previous redistribution algorithms, COSTA will also propose the relabelling of MPI ranks that minimizes the data reshuffling cost, leaving to users to decide if they want to use it. This way, if the initial and the target data distributions differ up to a rank permutation, COSTA will perform no communication, whereas other algorithms will reshuffle all the data. Thanks to its optimizations, significant speedups will be achieved even if the proposed rank relabelling is not used.
Package license:
Summary: Communication-Optimal Shuffle & Transpose Algorithm (COSTA)
Package license:
Summary: COSTA with ScaLAPACK wrappers for drop-in replacement
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Installing costa_variants from the conda-forge channel can be achieved by adding conda-forge to your channels with:
conda config --add channels conda-forge
conda config --set channel_priority strict
Once the conda-forge channel has been enabled, costa, costa-scalapack can be installed with conda:
conda install costa costa-scalapack
or with mamba:
mamba install costa costa-scalapack
It is possible to list all of the versions of costa available on your platform with conda:
conda search costa --channel conda-forge
or with mamba:
mamba search costa --channel conda-forge
Alternatively, mamba repoquery may provide more information:
# Search all versions available on your platform:
mamba repoquery search costa --channel conda-forge
# List packages depending on `costa`:
mamba repoquery whoneeds costa --channel conda-forge
# List dependencies of `costa`:
mamba repoquery depends costa --channel conda-forge
conda-forge is a community-led conda channel of installable packages. In order to provide high-quality builds, the process has been automated into the conda-forge GitHub organization. The conda-forge organization contains one repository for each of the installable packages. Such a repository is known as a feedstock.
A feedstock is made up of a conda recipe (the instructions on what and how to build the package) and the necessary configurations for automatic building using freely available continuous integration services. Thanks to the awesome service provided by Azure, GitHub, CircleCI, AppVeyor, Drone, and TravisCI it is possible to build and upload installable packages to the conda-forge anaconda.org channel for Linux, Windows and OSX respectively.
To manage the continuous integration and simplify feedstock maintenance,
conda-smithy has been developed.
Using the conda-forge.yml within this repository, it is possible to re-render all of
this feedstock's supporting files (e.g. the CI configuration files) with conda smithy rerender.
For more information, please check the conda-forge documentation.
feedstock - the conda recipe (raw material), supporting scripts and CI configuration.
conda-smithy - the tool which helps orchestrate the feedstock.
Its primary use is in the construction of the CI .yml files
and simplify the management of many feedstocks.
conda-forge - the place where the feedstock and smithy live and work to produce the finished article (built conda distributions)
If you would like to improve the costa_variants recipe or build a new
package version, please fork this repository and submit a PR. Upon submission,
your changes will be run on the appropriate platforms to give the reviewer an
opportunity to confirm that the changes result in a successful build. Once
merged, the recipe will be re-built and uploaded automatically to the
conda-forge channel, whereupon the built conda packages will be available for
everybody to install and use from the conda-forge channel.
Note that all branches in the conda-forge/costa_variants-feedstock are
immediately built and any created packages are uploaded, so PRs should be based
on branches in forks, and branches in the main repository should only be used to
build distinct package versions.
In order to produce a uniquely identifiable distribution:
- If the version of a package is not being increased, please add or increase
the
build/number. - If the version of a package is being increased, please remember to return
the
build/numberback to 0.