# TheHPXProject/hpx

The C++ Standard Library for Parallelism and Concurrency

Repository: https://github.com/TheHPXProject/hpx
Canonical: https://ross.abutalabs.com/products/hpx
Homepage: https://hpx.dev
Language: C++
License: BSL-1.0
License Family: other
Topics: c-plus-plus, distributed, cross-platform, parallelism, concurrency, cpp20, cpp20-modules
Last push: 2026-08-26T14:36:45+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 5212, "days_push": 7, "days_rel": 430, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2885, forks 550 (observed 2026-08-28T04:07:28.182964+00:00)

## What it is
HPX is a C++ Standard Library for parallelism and concurrency that implements C++ standard parallel facilities and extends them to distributed systems. It is the first runtime implementation of the ParalleX execution model, enabling fine-grained asynchronous programming with futures and dataflow at scales from laptops to exascale clusters.

## Use cases
- write fully asynchronous C++ code with futures and dataflow
- parallelize C++ applications across many cores
- build distributed HPC applications on clusters
- migrate from OpenMP, TBB, or MPI to a unified API
- scale fine-grained parallel workloads to millions of threads
- run the same code locally and across distributed nodes

## When to choose
- you need a standards-oriented C++ API for parallel and distributed computing
- you want fine-grained, latency-hiding task parallelism beyond what OpenMP offers
- you are targeting large-scale HPC systems or clusters
- you want unified syntax for local and remote operations

## When to avoid
- you need a simple threading library with minimal dependencies
- your project is not C++ or cannot tolerate long compile times
- you only need basic multithreading already covered by the C++ standard library
- you need a lightweight runtime for embedded or resource-constrained devices

## Facets
- artifact type: library
- maturity: stable
- function: concurrency, sdk, developer-tools
- domain: microservices, performance, gpu-computing, developer-tools
- platform: cpp, windows, cross-platform
- tags: hpc, parallelism, parallex, futures, task-runtime, distributed-computing, async, cpp-standard-library, linux, macos

## Member repositories
- TheHPXProject/hpx (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:28.182964+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:35:23.979050+00:00, confidence not recorded.
  - readme: https://github.com/TheHPXProject/hpx (fetched 2026-08-28T04:07:28.182964+00:00, sha 8cad98cb9e1f)
  - homepage: https://hpx.dev (fetched 2026-08-29T09:50:46.388268+00:00, sha a529f4746a16)
  - site_page: https://hpx.dev/about (fetched 2026-08-29T09:50:46.397667+00:00, sha 2e14b8f891fb)
  - site_page: https://hpx.dev/releases/hpx-1-10-0-released (fetched 2026-08-29T09:50:46.399685+00:00, sha 3a2f14001b7c)
  - site_page: https://hpx.dev/category/releases (fetched 2026-08-29T09:50:46.401341+00:00, sha a1719c1c094b)
- Data as of 2026-08-30T08:39:29.467469+00:00.