HPX

Not to be confused with Hemopexin, a glycoprotein encoded by the HPX gene.

HPX, short for High Performance ParalleX, is a runtime system for high-performance computing. It is currently under active development by the STE||AR group^[2] at Louisiana State University. Focused on scientific computing, it provides an alternative execution model to conventional approaches such as MPI. HPX aims to overcome the challenges MPI faces with increasing large supercomputers by using asynchronous communication between nodes and lightweight control objects instead of global barriers, allowing application developers to exploit fine-grained parallelism.^[3][4][5]

HPX
Developers	The STEllAR Group, archived from the original on 2019-04-03, retrieved 2019-04-03 LSU Center for Computation and Technology
Initial release	2008 (2008)
Stable release	1.10.0 / May 29, 2024; 16 months ago (2024-05-29)
Repository	github.com/STEllAR-GROUP/hpx
Written in	C++
Operating system	Microsoft Windows Linux Mac OS X
Type	Partitioned global address space Parallel programming Runtime System
License	Boost Software License[1]
Website	hpx.stellar-group.org

HPX is developed in idiomatic C++ and released as open source under the Boost Software License, which allows usage in commercial applications.

Applications

Though designed as a general-purpose environment for high-performance computing, HPX has primarily been used in

• Astrophysics simulation, including the N-body problem,^[6] neutron star evolution,^[7] and the merging of stars^[8]
  • Octo-Tiger,^[9][10] An astrophysics application simulating the evolution of star systems.
• LibGeoDecomp,^[11][12][13] A Library for Geometric Decomposition codes
• Simulation crack and fractures utilizing Peridynamics^[14]
• Phylanx,^{[15][16][17][5]} A Library for Distributed Array Processing