..
Copyright (c) 2007-2020 Louisiana State University
SPDX-License-Identifier: BSL-1.0
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt), circleci_status, zenodo_doi, codacy, Documentation: `latest
https://stellar-group.github.io/hpx-docs/latest/html/index.html_, development (master)
https://stellar-group.github.io/hpx-docs/branches/master/html/index.html`_
===
HPX
HPX is a C++ Standard Library for Concurrency and Parallelism. It implements all
of the corresponding facilities as defined by the C++ Standard. Additionally, in
HPX we implement functionalities proposed as part of the ongoing C++
standardization process. We also extend the C++ Standard APIs to the distributed
case.
The goal of HPX is to create a high quality, freely available, open source
implementation of a new programming model for conventional systems, such as
classic Linux based Beowulf clusters or multi-socket highly parallel SMP nodes.
At the same time, we want to have a very modular and well designed runtime
system architecture which would allow us to port our implementation onto new
computer system architectures. We want to use real-world applications to drive
the development of the runtime system, coining out required functionalities and
converging onto a stable API which will provide a smooth migration path for
developers.
The API exposed by HPX is not only modeled after the interfaces defined by the
C++11/14/17/20 ISO standard, it also adheres to the programming guidelines used
by the Boost collection of C++ libraries. We aim to improve the scalability of
today's applications and to expose new levels of parallelism which are necessary
to take advantage of the exascale systems of the future.
What's so special about HPX?
- HPX exposes a uniform, standards-oriented API for ease of programming parallel
and distributed applications. - It enables programmers to write fully asynchronous code using hundreds of
millions of threads. - HPX provides unified syntax and semantics for local and remote operations.
- HPX makes concurrency manageable with dataflow and future based
synchronization. - It implements a rich set of runtime services supporting a broad range of use
cases. - HPX exposes a uniform, flexible, and extendable performance counter framework
which can enable runtime adaptivity - It is designed to solve problems conventionally considered to be
scaling-impaired. - HPX has been designed and developed for systems of any scale, from hand-held
devices to very large scale systems. - It is the first fully functional implementation of the ParalleX execution
model. - HPX is published under a liberal open-source license and has an open, active,
and thriving developer community.
Documentation
If you plan to use HPX we suggest to start with the latest released version
which can be downloaded here <https://stellar.cct.lsu.edu/downloads/>_.
To quickly get started with HPX on most Linux distributions you can read the
quick start guide here <https://stellar-group.github.io/hpx-docs/latest/html/quickstart.html>.
Detailed instructions on building and installing HPX on various platforms can be
found here <https://stellar-group.github.io/hpx-docs/latest/html/manual/building_hpx.html>.
The full documentation for the latest release of HPX can always be found here <https://stellar-group.github.io/hpx-docs/latest/html/index.html>_.
If you would like to work with the cutting edge version of this repository
(master branch) the documentation can be found here <https://stellar-group.github.io/hpx-docs/branches/master/html/index.html>.
We strongly recommend that you follow the current health status of the master
branch by looking at our continuous integration results website <http://rostam.cct.lsu.edu/console>. While we try to keep the master branch
stable and usable, sometimes new bugs trick their way into the code base. The
CircleCI <https://circleci.com/gh/STEllAR-GROUP/hpx>_ continuous integration
service additionally tracks the current build status for the master branch:, circleci_status, .
We use Codacy <https://www.codacy.com/>_ to assess the code quality of this
project:, codacy, .
If you can't find what you are looking for in the documentation or you suspect
you've found a bug in HPX we very much encourage and appreciate any issue
reports through the issue tracker for this Github project <https://github.com/STEllAR-GROUP/hpx/issues>_.
If you have any questions feel free to ask it over at StackOverflow <https://stackoverflow.com>_ and tag the question with hpx <https://stackoverflow.com/questions/tagged/hpx>_.
For a full list of support options please see our Support page <https://github.com/STEllAR-GROUP/hpx/blob/master/.github/SUPPORT.md>_.
Code of conduct
We have adopted a code of conduct <https://github.com/STEllAR-GROUP/hpx/blob/master/.github/CODE_OF_CONDUCT.md>_
for this project. Please refer to this document if you would like to know more
about the expectations for members of our community, with regard to how they
will behave toward each other.
Please find the project's gpg key, which is used to sign HPX releases
here <https://pgp.mit.edu/pks/lookup?op=get&search=0xE18AE35E86BB194F>_.
Citing
In publications the latest release of HPX can be cited as:, zenodo_doi, .
Acknowledgements
We would like to acknowledge the NSF, DoE, DTIC, DARPA, the Center for
Computation and Technology (CCT) at Louisiana State University, and the
Department of Computer Science 3 - Computer Architecture at the University of
Erlangen Nuremberg who fund and support our work.
We would also like to thank the following organizations for granting us
allocations of their compute resources: LSU HPC, LONI, XSEDE, NERSC, CSCS/ETHZ,
and the Gauss Center for Supercomputing.
HPX is currently funded by
-
The National Science Foundation through awards 1240655 (STAR), 1339782
(STORM), and 1737785 (Phylanx).Any opinions, findings, and conclusions or recommendations expressed in this
material are those of the author(s) and do not necessarily reflect the views
of the National Science Foundation. -
The Department of Energy (DoE) through the awards DE-AC52-06NA25396 (FLeCSI)
and DE-NA0003525 (Resilience).Neither the United States Government nor any agency thereof, nor any of their
employees makes any warranty, express or implied, or assumes any legal
liability or responsibility for the accuracy, completeness, or usefulness of
any information, apparatus, product, or process disclosed, or represents that
its use would not infringe privately owned rights. Reference herein to any
specific commercial product, process, or service by trade name, trademark,
manufacturer, or otherwise does not necessarily constitute or imply its
endorsement, recommendation, or favoring by the United States Government or
any agency thereof. The views and opinions of authors expressed herein do not
necessarily state or reflect those of the United States Government or any
agency thereof. -
The Defense Technical Information Center (DTIC) under contract
FA8075-14-D-0002/0007Neither the United States Government nor any agency thereof, nor any of their
employees makes any warranty, express or implied, or assumes any legal
liability or responsibility for the accuracy, completeness, or usefulness of
any information, apparatus, product, or process disclosed, or represents that
its use would not infringe privately owned rights. -
The Bavarian Research Foundation (Bayerische Forschungsstiftung) through the
grant AZ-987-11. -
The European Commission's Horizon 2020 programme through the grant
H2020-EU.1.2.2. 671603 (AllScale).
.., circleci_status, image:: https://circleci.com/gh/STEllAR-GROUP/hpx/tree/master.svg?style=svg
:target: https://circleci.com/gh/STEllAR-GROUP/hpx/tree/master
:alt: HPX master branch build status
.., zenodo_doi, image:: https://zenodo.org/badge/DOI/10.5281/zenodo.598202.svg
:target: https://doi.org/10.5281/zenodo.598202
.., codacy, image:: https://api.codacy.com/project/badge/Grade/fef52e7a84d04123921152e35fbb1594
:target: https://www.codacy.com/app/STEllAR-GROUP/hpx
:alt: HPX Code Quality Assessment
