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OSS Report: google/maxtext


MaxText Development Faces Critical Checkpointing Challenges Amidst Active Model Expansion

MaxText, an open-source large language model framework, continues to evolve with active development focused on model integration and performance optimization. However, recent issues highlight critical challenges in checkpoint management that may affect user trust and framework stability.

The MaxText project is designed to facilitate the development of scalable large language models using Python and Jax, leveraging Google Cloud's TPU and GPU resources. It aims to provide robust performance while simplifying the training and inference processes for models like Llama2 and Mistral.

Recent Activity

Recent pull requests (PRs) indicate a strong focus on expanding model support and optimizing performance. Notably, PRs such as #894 and #838 introduce configurations for Llama2 70B and Llama3.1 models, respectively, reflecting ongoing efforts to integrate cutting-edge models. Performance optimizations are evident in PRs like #886, which modifies configuration for improved mesh staging.

The development team has been actively addressing infrastructure improvements, as seen in PRs like #890, which aims to manage Docker image storage in GitHub actions. Cross-platform compatibility is also a priority, with PR #883 removing tensorflow_text for aarch64 compatibility.

Development Team and Recent Contributions

  1. Anfal Siddiqui (anfals)

    • Debugging and refining training scripts.
    • Files Changed: Numerous files with extensive changes.
  2. Ran Ran (RissyRan)

    • Added precision options and contributed to model configurations.
    • Files Changed: Multiple files across various commits.
  3. Raymond Zou (raymondzouu)

    • Added scripts for GPT-3 175B MLPerf benchmarking.
    • Files Changed: Multiple files with substantial additions.
  4. Matthew Davidow (gobbleturk)

    • Fixed kernel imports and contributed to pipeline parallelism features.
    • Files Changed: Various files with multiple changes.
  5. Zhiyu Li (ZhiyuLi-goog)

    • Contributed to expert parallelism features.
    • Files Changed: Various files with multiple changes.

Of Note

  1. Checkpoint Management Issues: High-priority issues like #887 and #868 highlight significant challenges in checkpoint conversion and recovery processes, potentially impacting user experience.

  2. Model Integration: The addition of configurations for new models like Llama3.1 (#838) underscores the project's commitment to staying at the forefront of model support.

  3. Performance Optimization: Efforts such as PR #811's flash attention sweep indicate ongoing research into optimizing computational efficiency.

  4. Infrastructure Enhancements: Automation of code style checks (#893 & #892) reflects a focus on maintaining code quality and streamlining development workflows.

  5. Cross-Platform Compatibility: Addressing platform-specific issues (#883) demonstrates a commitment to broadening the framework's usability across different hardware environments.

Quantified Reports

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Recent GitHub Issues Activity

Timespan Opened Closed Comments Labeled Milestones
7 Days 4 4 33 3 1
30 Days 11 8 53 8 1
90 Days 24 12 67 14 1
1 Year 75 49 231 55 1
All Time 87 64 - - -

Like all software activity quantification, these numbers are imperfect but sometimes useful. Comments, Labels, and Milestones refer to those issues opened in the timespan in question.

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Quantified Commit Activity Over 30 Days

Developer Avatar Branches PRs Commits Files Changes
Bernard Han (bernardhan33) 2 4/3/0 6 100 5581
Anfal Siddiqui 6 1/1/0 25 91 3774
jwyang-google 2 2/1/1 2 61 2421
Zhaoyue Cheng 2 2/2/0 5 18 1826
Pate Motter 2 2/2/0 4 10 1344
aireenmei 5 3/2/0 8 25 1269
Ran Ran 4 5/5/0 8 16 1033
Zhihao Shan 1 0/0/0 2 13 496
Raymond Zou 3 4/3/0 6 19 369
Matthew Davidow 4 7/5/1 13 13 338
ZhiyuLi-goog 7 4/4/0 10 10 303
Colin Gaffney 2 0/0/0 2 1 184
Lance Wang 1 0/0/0 3 7 138
Hira 2 2/2/1 3 2 112
Dipannita Shaw (dipannita08) 1 1/0/0 3 1 89
Matt Irvine (MattIrv) 1 1/1/0 1 3 68
Sujeeth Jinesh (SujeethJinesh) 1 1/0/0 1 6 68
Abhinav Singh 2 1/1/0 2 1 60
Alex Shraer 2 3/2/1 3 3 55
Branden Vandermoon 3 2/2/0 5 6 40
Gagik Amirkhanyan 1 1/1/0 1 1 20
Robert Dyro (rdyro) 1 3/1/1 1 5 16
maxtext authors 2 0/0/0 2 4 14
None (jonb377) 3 1/0/0 3 3 10
Param Bole 1 1/1/0 1 1 4
Mohit Khatwani (khatwanimohit) 1 2/0/0 1 1 4
Daniel Ng 1 0/0/0 1 1 3
wenxindongwork 1 1/1/0 1 3 3
Kyle Sorensen (kyle-google) 0 2/0/2 0 0 0

PRs: created by that dev and opened/merged/closed-unmerged during the period

Detailed Reports

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Recent Activity Analysis

The MaxText project has recently seen a surge in activity, with 23 open issues currently being tracked. Notably, several issues indicate ongoing challenges related to model training and checkpoint management, suggesting that users are actively engaging with the framework to resolve critical bugs and enhance functionality. Common themes include difficulties with checkpoint loading, configuration errors, and requests for additional features or support for new models.

Several issues stand out due to their implications for the project's stability and usability. For instance, Issue #887 discusses a significant loss increase during training after converting model checkpoints, which raises concerns about the conversion process's reliability. Similarly, Issue #868 highlights crashes occurring after saving checkpoints, indicating potential instability in the checkpointing mechanism. These problems could hinder user experience and trust in the framework if not addressed promptly.

Issue Details

Recently Created Issues

  1. Issue #887: converted mlperf gpt3 ckpt starts with a worse loss

    • Priority: High
    • Status: Open
    • Created: 5 days ago
    • Updated: 0 days ago
  2. Issue #878: Mask is being ignored when cudnn_flash_attention is used

    • Priority: Medium
    • Status: Open
    • Created: 7 days ago
    • Updated: 0 days ago
  3. Issue #868: Unable to recover after checkpoint saving

    • Priority: High
    • Status: Open
    • Created: 11 days ago
    • Updated: 0 days ago
  4. Issue #865: Cannot see multiple GPUs when using Slurm (with proposed fix)

    • Priority: Medium
    • Status: Open
    • Created: 13 days ago
    • Updated: 0 days ago
  5. Issue #831: Standalone checkpoint write seems to have memory leak

    • Priority: Medium
    • Status: Open
    • Created: 29 days ago
    • Updated: 0 days ago

Recently Updated Issues

  1. Issue #879: Error loading mlperf gpt3 checkpoint after pax to maxtext conversion

    • Priority: High
    • Status: Closed
    • Created: 7 days ago
    • Updated: 5 days ago
  2. Issue #875: Cannot load the paxml gpt3 tokenizer

    • Priority: High
    • Status: Closed
    • Created: 7 days ago
    • Updated: 7 days ago
  3. Issue #864: Converting LLama3.1 405B checkpoint - Requesting multipass checkpoint conversion

    • Priority: Medium
    • Status: Closed
    • Created: 14 days ago
    • Updated: 0 days ago
  4. Issue #847: mlperf gpt3 ckpt permission issues

    • Priority: Medium
    • Status: Closed
    • Created: 21 days ago
    • Updated: 6 days ago
  5. Issue #735: Inconsistent code formatting

    • Priority: Low
    • Status: Closed
    • Created: 81 days ago
    • Updated: 1 day ago

Summary of Themes

The recent activity indicates a focus on resolving critical bugs related to model training and checkpoint management, as well as improving usability through feature requests and enhancements. The presence of multiple high-priority issues suggests that users are facing significant challenges that could impact their ability to effectively utilize the MaxText framework for large language model development.

The issues also reflect a community actively engaged in troubleshooting and improving the framework, as evidenced by discussions around proposed fixes and workarounds for identified problems. This collaborative approach is essential for maintaining momentum in project development and ensuring user satisfaction.

Overall, while there are notable challenges being faced by users, the active engagement in addressing these issues points towards a resilient community committed to enhancing the MaxText experience.

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Overview

The analysis of the pull requests (PRs) for the MaxText project reveals a vibrant and active development environment. The project has seen a substantial number of PRs, both open and closed, indicating ongoing enhancements, bug fixes, and feature additions. The PRs cover a wide range of topics, from performance optimizations and model integrations to documentation improvements and infrastructure updates.

Summary of Pull Requests

Open Pull Requests

  • PR #896: [WIP] partial nnx impl - A work-in-progress PR introducing partial nnx implementation with significant changes across multiple files, including new layer implementations and extensive testing.
  • PR #895: Initialize jax distributed when checkpointing is enabled - Addresses an issue with nightly tests failing due to jax.distributed not being initialized in certain cases.
  • PR #894: Add Llama 2 70B config on v5p - Adds configuration for Llama 2 70B on v5p, expanding model support within the framework.
  • PR #890: Docker prune in all github actions - Aims to clean up old docker images in GitHub actions to prevent storage issues.
  • PR #886: stage first axes mesh - Modifies configuration to stage first axes mesh, potentially improving performance or compatibility.
  • PR #883: removing tensorflow_text for aarch64 compatibility - Removes dependency on tensorflow_text for aarch64 compatibility, addressing platform-specific issues.
  • PR #866: test code to produce Lab Notes - 2024-09-07.ipynb - Adds test code for framework validation, contributing to testing robustness.
  • PR #838: Llama3.1 (8B,70B) - Introduces configurations for Llama3.1 models, expanding the project's model capabilities.
  • PR #834: Integrate Badput monitoring with MaxText - Integrates additional monitoring capabilities into MaxText, enhancing observability and debugging.
  • PR #811: flash attention sweep - Experimental PR related to flash attention, indicating ongoing research or optimization efforts.

Closed Pull Requests

  • PR #893 & #892: Run code-style on changed files in pre-commit. - Attempts to automate code style checks in pre-commit hooks, reflecting efforts towards maintaining code quality.
  • PR #891: Add precision option - Introduces precision options for matmul operations, allowing finer control over numerical computations within models.
  • PR #889: Add GPT-3 175B v5p MLPerf 4.0 scripts - Adds MLPerf benchmarking scripts for GPT-3 175B, supporting performance evaluation and optimization efforts.
  • PR #888: convert maxtext trained orbax checkpoint to HF checkpoint - Facilitates conversion between different checkpoint formats, enhancing interoperability with other frameworks or tools.

Analysis of Pull Requests

The PRs reflect several key themes in the ongoing development of MaxText:

  1. Model Expansion and Integration: There is a continuous effort to expand the range of supported models within MaxText. PRs like those adding configurations for Llama2 and Llama3.1 demonstrate this focus on integrating cutting-edge models into the framework.

  2. Performance Optimization: Many PRs aim at optimizing performance through various means such as adjusting configurations (e.g., staging first axes mesh), integrating new technologies (e.g., flash attention), or refining existing functionalities (e.g., adding precision options).

  3. Infrastructure and Tooling Improvements: Several PRs focus on enhancing the development infrastructure itself, such as automating code style checks or improving testing frameworks. These efforts are crucial for maintaining high code quality and facilitating smoother development workflows.

  4. Cross-platform Compatibility: Efforts like removing tensorflow_text for aarch64 compatibility indicate a commitment to ensuring that MaxText runs efficiently across different platforms.

  5. Monitoring and Observability Enhancements: Integrating additional monitoring capabilities reflects an emphasis on improving observability within the framework, which is vital for debugging complex models and training processes.

In conclusion, the active development reflected in these PRs showcases MaxText's commitment to evolving as a leading framework for large language models. The focus on expanding model support, optimizing performance, enhancing tooling, ensuring compatibility across platforms, and improving observability positions MaxText as a robust solution for both researchers and practitioners in the field of AI.

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Repo Commits Analysis

Development Team and Recent Activity

Team Members and Recent Contributions

  1. Daniel Ng (ChromeHearts)

    • Recent Activity: Improved step time after emergency local restoration in MaxText/train.py.
    • Files Changed: 1 file, 3 lines removed.
  2. Alex Shraer (shralex)

    • Recent Activity: Merged pull request for code style improvements and ran code-style checks on changed files.
    • Files Changed: 2 files, 19 lines modified.
  3. Ran Ran (RissyRan)

    • Recent Activity: Added precision options and contributed to multiple configurations for models including GPT-3 and Mixtral.
    • Files Changed: Multiple files across various commits, significant contributions to model configurations.
  4. Raymond Zou (raymondzouu)

    • Recent Activity: Added scripts for GPT-3 175B v5p MLPerf and contributed to various model configurations.
    • Files Changed: Multiple files with substantial additions.
  5. Anfal Siddiqui (anfals)

    • Recent Activity: Active in debugging, adding logs, and merging main into branches. Contributed significantly to training scripts.
    • Files Changed: Numerous files with extensive changes across multiple commits.
  6. Matthew Davidow (gobbleturk)

    • Recent Activity: Fixed kernel imports, added features related to pipeline parallelism, and contributed to various tests.
    • Files Changed: Various files with multiple changes across commits.
  7. Aireen Mei (aireenmei)

    • Recent Activity: Worked on convergence tests, made HF pipeline deterministic, and added evaluation features.
    • Files Changed: Multiple files with significant modifications.
  8. Zhiyu Li (ZhiyuLi-goog)

    • Recent Activity: Contributed to expert parallelism features and model configurations.
    • Files Changed: Various files with multiple changes across commits.
  9. Colin Gaffney (cpgaffney1)

    • Recent Activity: Removed old orbax API references and contributed to checkpointing improvements.
    • Files Changed: Several files with notable modifications.
  10. Zhaoyue Cheng (ZhaoyueCheng)

    • Recent Activity: Added configurations for Mixtral models and improved checkpointing scripts.
    • Files Changed: Significant changes across multiple files.
  11. Dipannita Shaw (dipannita08)

    • Recent Activity: Updated training scripts and added logging features.
    • Files Changed: Various files with notable modifications.
  12. Bernard Han (bernardhan33)

    • Recent Activity: Worked on GCS checkpointing features and validation framework updates.
    • Files Changed: Extensive changes across multiple files.

Patterns and Themes

  • The team is actively merging pull requests focused on improving performance, debugging capabilities, and enhancing model configurations.
  • Significant collaboration is evident among team members, particularly in merging branches that involve complex features like expert parallelism and AOT compilation.
  • Anfal Siddiqui shows a high level of activity, particularly in debugging and refining training processes, indicating a focus on improving the robustness of the training framework.
  • The contributions span various aspects of the project including configuration management, performance optimizations, and code quality improvements through style checks.
  • The recent activity indicates a strong emphasis on preparing the framework for large-scale deployments with continuous integration practices in place.

Conclusion

The development team is highly engaged in refining the MaxText framework with a focus on performance enhancements, debugging capabilities, and collaborative feature development. The variety of contributions reflects a robust effort towards maintaining high standards in code quality while also ensuring that the framework remains scalable and efficient for users leveraging Google Cloud resources.