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Justin Perlman

PROFILE

Justin Perlman

Worked on the coreweave/ml-containers repository to deliver robust build automation and containerization solutions for machine learning workloads. Focused on vLLM-tensorizer, the work included upgrading dependencies, aligning base images across CUDA and PyTorch variants, and implementing multi-stage Docker builds for leaner images. Addressed build stability by tuning environment variables, resolving dependency conflicts, and introducing reproducible configuration management. Added support for gRPC and graph-based computation via Ray[cgraph], enabling advanced ML workflows. Used Python, Dockerfile, and YAML to streamline CI/CD pipelines, improve runtime reliability, and ensure maintainable, auditable deployments that facilitate future upgrades and scalable experimentation in containerized environments.

Overall Statistics

Feature vs Bugs

40%Features

Repository Contributions

53Total
Bugs
24
Commits
53
Features
16
Lines of code
408
Activity Months4

Work History

April 2026

1 Commits • 1 Features

Apr 1, 2026

Monthly summary for 2026-04: Delivered a key feature upgrade by upgrading the VLLM library to v0.18.1 in coreweave/ml-containers, delivering stability and performance improvements. No major bugs identified/fixed in this component this month. The upgrade reduces risk, improves runtime behavior, and aligns with the latest tooling and capabilities.

March 2026

1 Commits • 1 Features

Mar 1, 2026

March 2026 focused on enabling graph-based computation capabilities for vllm-tensorizer within coreweave/ml-containers. The team introduced Ray[cgraph] into the Dockerfile, enabling graph-based tensorization workflows and setting the stage for performance optimizations in graph-enabled ML pipelines. This was implemented via commit 5c615b780207098f79a1e2ed63d7e8649a9512ee, preserving build reproducibility and traceability. Impact includes improved preparation for scalable graph workloads and a more efficient path to experimentation in containerized environments.

February 2026

5 Commits • 2 Features

Feb 1, 2026

February 2026 monthly summary for coreweave/ml-containers: Key features delivered include VLLM-tensorizer dependency and base image upgrades, enabling improved performance and compatibility; gRPC support added to VLLM builder dependencies; and build stability improvements via pinning setuptools to stable versions to reduce failures. These workstreams enhanced runtime reliability, streamlined developer workflows, and positioned the container suite for smoother future upgrades.

June 2025

46 Commits • 12 Features

Jun 1, 2025

June 2025 monthly wrap-up for coreweave/ml-containers focusing on vLLM-tensorizer build stability, performance, and maintainability. Highlights include CI/build pipeline improvements, a lean multi-stage Docker image, and proactive dependency/compatibility work across CUDA and PyTorch variants.

Activity

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Quality Metrics

Correctness92.6%
Maintainability94.8%
Architecture91.4%
Performance86.2%
AI Usage20.0%

Skills & Technologies

Programming Languages

CMakeDockerfileGitPythonShellYAML

Technical Skills

Base Image ManagementBuild AutomationBuild EngineeringBuild System ConfigurationBuild SystemsCI/CDCI/CD ConfigurationCUDAContainerizationDependency ManagementDevOpsDockerDockerfileGitHub ActionsMachine Learning

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

coreweave/ml-containers

Jun 2025 Apr 2026
4 Months active

Languages Used

CMakeDockerfileGitPythonShellYAML

Technical Skills

Base Image ManagementBuild AutomationBuild EngineeringBuild System ConfigurationBuild SystemsCI/CD