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  • Red Hat
  • India

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Achievement: YOLOAchievement: Pull Sharkx2Achievement: Quickdraw

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subinz1/README.md

Hey, I'm Subin George

CI/CD & ML Infrastructure | PyTorch Contributor | Red Hat | India

I work on CI/CD infrastructure and developer tooling for machine learning frameworks. Currently building the Cross-Repository CI Relay (CRCR) for PyTorch — a fully automated pipeline that triggers and tracks CI across downstream repositories whenever a PR is opened on pytorch/pytorch, with results flowing back to the PyTorch CI HUD.

What I'm working on

  • Cross-Repository CI Relay (CRCR) — Designed and built the relay system that connects upstream PyTorch events to downstream CI across the ecosystem. Key components: Callback Lambda (OIDC verification, state machine, rate limiting), HUD integration (React dashboard pages, ClickHouse queries, API routes), on-call bot, and CI-neutral callback action (GitHub Actions + Buildkite). Co-authored RFC-0050, RFC-0054, and RFC-0056 (Nightly & Periodic CI). 70+ PRs across 6 repositories.

  • CRCR HUD Frontend — Built the per-repo dashboard, metrics pages, and nightly health views in React/Next.js. Includes summary cards (pass rate, timeout rate, execution time), time-range selectors, repo tenure tracking, and PR/Nightly tab navigation — all backed by ClickHouse analytical queries.

  • RHEL CI for PyTorch — Built a downstream CI pipeline that builds and tests PyTorch nightly on RHEL 9.6 using podman containers and self-hosted runners. Features delta-based test determination (heuristic + structural C++ call graph analysis), categorized test execution (CPU, Inductor, single-GPU, multi-GPU), Quay.io image registry, selective manual dispatch, and CRCR L2 integration for upstream HUD reporting.

  • PyTorch Core Contributions — Bug fixes and improvements across torch.nn, torch.distributed, and test infrastructure. Notable contributions include fixing softplus numerical instability, adding convolution overflow checks, and fixing OOT backend registration. 90+ PRs in pytorch/pytorch.

Organizations

PyTorch TorchedHat

Tech

Python C++ TypeScript React/Next.js AWS Lambda DynamoDB ClickHouse Redis GitHub Actions Terraform Docker/Podman PyTorch

Open to collaborating on PyTorch, ML infra, and open-source CI tooling.

Pinned Loading

  1. pytorch/pytorch pytorch/pytorch Public

    Tensors and Dynamic neural networks in Python with strong GPU acceleration

    Python 103k 29.1k

  2. pytorch/test-infra pytorch/test-infra Public

    This repository hosts code that supports the testing infrastructure for the PyTorch organization. For example, this repo hosts the logic to track disabled tests and slow tests, as well as our conti…

    TypeScript 113 144

  3. pytorch/ci-infra pytorch/ci-infra Public

    Python 17 15

  4. pytorch/crcr-test pytorch/crcr-test Public

    Test for Cross-Repository CI Relay for PyTorch Out-of-Tree Backend

    Python 2 2