An application-focused API for memory management on NUMA & GPU architectures
⚡ Executive Summary & Quick Facts
Authoritative SourceUmpire is Umpire is an open-source project written in C++: An application-focused API for memory management on NUMA & GPU architectures..
| Repository | llnl/Umpire ↗ |
|---|---|
| Primary Category | blt |
| Language & Stack | C++ |
| Software License | MIT |
| Community Traction | ★ 422 stars · ⑂ 66 forks · #9,843 globally |
| Maintenance | ● Active (Last commit: Oct 13, 2026) · 36 open issues |
| Target Audience | Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads. |
Star History
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+11
STARS · LAST 30 DAYS
1
PER DAY
#758
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +7 | +11 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +1 | +3 | +10 |
Umpire gained 11 stars in the last 30 days, about 1 a day, and now has 422. It is about 9 years old and has averaged roughly 47 stars a year. It ranks #758 among C++ repositories and #9,843 across all languages on GitHubRepo.
Trending Record
6
DAYS ON TRENDING
#9264
BEST RANK
Oct 14, 2026
FIRST APPEARANCE
Active
STATUS TODAY
Umpire has maintained a continuous presence across global trending indexes, peaking at #9264. Below is the 30-day activity profile:
💡 Overview
Umpire is an open-source project written in C++: An application-focused API for memory management on NUMA & GPU architectures.
Engineered for speed, consistency, and developer ease, it solves common hurdles in blt, cpp, gpu. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in C++ for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/llnl/Umpire.git
cd Umpire⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C++20 compliant compiler (GCC 11+, Clang 13+, MSVC)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
Umpire coordinates its core functionality through a modular C++ pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Production System Integration
Embed Umpire into C++ backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open MIT license.
🚀 Getting Started
Install Umpire using your package manager: `git clone https://github.com/llnl/Umpire.git`
Initialize your project workspace or configuration file for Umpire.
Import Umpire into your codebase or invoke it directly from your terminal.
Execute your test suite or run `Umpire --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
llnl/Umpire is currently ranked #9,843 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #9,830 | facebookresearch/momentum | C++ | ★ 423 | Compare ↗ |
| #9,830 | caipe-io/ai-platform-engineering | TypeScript | ★ 423 | Compare ↗ |
| #9,830 | fuji-mak/Capsomnia | Swift | ★ 423 | Compare ↗ |
| #9,830 | mrmps/classifier-dev | TypeScript | ★ 423 | Compare ↗ |
| #9,830 | V1ki/dsh-plugin-subscriptions | TypeScript | ★ 423 | Compare ↗ |
| #9,843 | llnl/Umpire This Project | C++ | ★ 422 | |
| #9,843 | vgvassilev/clad | C++ | ★ 422 | Compare ↗ |
| #9,843 | PMEAL/porespy | Python | ★ 422 | Compare ↗ |
| #9,843 | LoopKit/LoopKit | Swift | ★ 422 | Compare ↗ |
| #9,843 | celestiaorg/celestia-app | Go | ★ 422 | Compare ↗ |
| #9,843 | sideeffect-io/AsyncExtensions | Swift | ★ 422 | Compare ↗ |
Frequently Asked Questions
What does Umpire do? +
An application-focused API for memory management on NUMA & GPU architectures
What language is Umpire written in? +
The primary language is C++. Topics include: blt, cpp, gpu, hpc, memory-management.
Is Umpire actively maintained? +
Yes, the last recorded push was on Oct 13, 2026 with 36 open issues being tracked.
How many stars does Umpire have? +
Umpire has 422 stars and 66 forks on GitHub.
How does Umpire rank among GitHub repositories? +
With 422 stars, llnl/Umpire is ranked #9,843 globally across all repositories tracked on GitHubRepo and #758 among C++ projects.
What license is Umpire distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
