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Manupa Karunaratne

PROFILE

Manupa Karunaratne

Manupa Karunaratne developed advanced GPU vectorization and benchmarking features for the iree-org/iree and nod-ai/iree-kernel-benchmark repositories, focusing on correctness, performance, and developer experience. He enhanced attention benchmarking fidelity, improved attention operation robustness, and expanded support for dynamic shapes and masked vector operations. Using C++, MLIR, and Python, Manupa refactored vector distribution passes, introduced shared memory reuse, and fixed subtle bugs in layout attribute handling. His work included detailed documentation updates and comprehensive unit tests, resulting in more reliable, scalable, and maintainable compiler infrastructure. The depth of his contributions strengthened both code quality and production readiness for GPU workloads.

Overall Statistics

Feature vs Bugs

80%Features

Repository Contributions

21Total
Bugs
2
Commits
21
Features
8
Lines of code
4,016
Activity Months3

Work History

February 2025

6 Commits • 2 Features

Feb 1, 2025

February 2025 monthly summary for iree-org/iree: Focused on strengthening the LLVMGPU backend with correctness-critical masking paths, expanding vector distribution capabilities for dynamic shapes, and fixing a nested layout capture bug. Delivered new features with tests and increased resilience across masked contractions, reductions, and contractions. This work improves reliability, correctness, and portability, enabling safer deployment in GPU-accelerated workflows.

January 2025

8 Commits • 2 Features

Jan 1, 2025

January 2025 monthly summary for iree-org/iree focused on advancing GPU vectorization, improving developer experience, and hardening correctness for dynamic shapes. Delivered user-facing documentation improvements, enhanced vectorization capabilities, and robust support for dynamic shapes across layouts, with targeted correctness fixes to ensure reliable behavior in production workloads.

November 2024

7 Commits • 4 Features

Nov 1, 2024

Month: 2024-11 — Delivered measurable improvements in attention benchmarking, attention op correctness, and GPU vectorization across two repos. Key outcomes include: enhanced attention benchmarking fidelity; robust attention ops with direct maps and corrected batch dimensions; GPU vector distribution improvements enabling vector.step distribution and shared memory reuse with tests; and a fix for thread_stride interpretation. These changes improve benchmarking reliability, GPU performance, and test coverage, driving tangible business value for performance-critical workloads. Technologies demonstrated include MLIR/LLVM backend work, LLVMGPU, GPU vectorization, distributed constants, dynamic offsets, memory reuse, and unit testing.

Activity

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Quality Metrics

Correctness90.0%
Maintainability83.8%
Architecture84.8%
Performance79.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

C++MLIRPythonYAML

Technical Skills

C++CI/CDCode ExplanationCode GenerationCode RefactoringCompiler DevelopmentDocumentationGPU Code GenerationGPU ProgrammingIR GenerationIR TransformationLLVMLinear AlgebraLow-Level OptimizationMLIR

Repositories Contributed To

2 repos

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

iree-org/iree

Nov 2024 Feb 2025
3 Months active

Languages Used

C++MLIR

Technical Skills

Code RefactoringCompiler DevelopmentGPU ProgrammingLLVMLinear AlgebraLow-Level Optimization

nod-ai/iree-kernel-benchmark

Nov 2024 Nov 2024
1 Month active

Languages Used

PythonYAML

Technical Skills

CI/CDPerformance BenchmarkingPython Development

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