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Misha Gutman

PROFILE

Misha Gutman

Over the past year, Aelphy developed high-performance neural network inference features and optimizations in the google/XNNPACK repository, focusing on quantized and low-precision computation. Leveraging C++ and ARM NEON intrinsics, Aelphy engineered cross-architecture SIMD kernels, enhanced deconvolution and matrix multiplication paths, and introduced 2-bit quantization support to accelerate inference on edge devices. The work included refactoring operator APIs, improving test coverage, and integrating with TensorFlow Lite for broader deployment. By addressing both algorithmic efficiency and code maintainability, Aelphy delivered robust, production-ready solutions that improved throughput, reduced latency, and enabled flexible model configurations for real-time machine learning workloads.

Overall Statistics

Feature vs Bugs

78%Features

Repository Contributions

83Total
Bugs
11
Commits
83
Features
39
Lines of code
89,922
Activity Months12

Work History

February 2026

4 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for XNNPACK and LiteRT contributions focused on accelerating quantized neural network inference and improving runtime correctness. Delivered cross-architecture kernel optimizations and updated edge-runtime cache handling to support new quantization variants, driving real-time performance improvements and reduced latency for end-user workloads.

January 2026

2 Commits • 2 Features

Jan 1, 2026

January 2026 performance highlights: Two high-impact deliverables across XNNPACK and Mediapipe improved core math readability and expanded LLM builder capabilities, enabling faster integration and broader model support. The work enhances maintainability, reduces risk in GEMM zero-point handling, and increases configuration flexibility for production-scale LLM deployments.

December 2025

29 Commits • 13 Features

Dec 1, 2025

December 2025 performance snapshot across XNNPACK and related stacks. Delivered feature-rich reductions and quantization improvements, expanded 2-bit support, and implemented scalar/int2 GEMM enhancements, while upgrading dependencies to boost runtime performance and stability for TensorFlow Lite integrations. Strengthened cross-architecture support (AVX/ARM/SSE) and introduced testing and stability fixes to ensure reliable production deployments.

November 2025

4 Commits • 1 Features

Nov 1, 2025

November 2025 performance update for google/XNNPACK: Delivered 2-bit qc2w variant for FullyConnected with NEON optimization; extended GEMM to qc2w with arch-aligned config and new benchmarks; fixed static_reduce benchmark accuracy; corrected data-type validation for qcint4 in subgraphs; implemented kernel-level uint2/INT2 optimizations for qc2w.

October 2025

4 Commits • 1 Features

Oct 1, 2025

Month 2025-10: Delivered cross-architecture SIMD reduction framework enhancements for google/XNNPACK, achieving faster, more maintainable reductions across ARM NEON and x86. Key changes include ARM32 NEON config fixes, widening sums for xint8 on x86, xf16_f32 reductions in NEON, and refactors to unify accumulators and vector handling, resulting in improved throughput for typical reduction workloads.

August 2025

3 Commits • 2 Features

Aug 1, 2025

Monthly summary for 2025-08 focusing on delivered features, major bug fixes, and overall impact with emphasis on business value and technical achievements for google/XNNPACK.

July 2025

7 Commits • 5 Features

Jul 1, 2025

July 2025 performance summary focused on performance, reliability, and extensibility across XNNPACK and TensorFlow Lite integration. Key deliverables include: (1) Extensible operator parameter model in google/XNNPACK enabling multiple extra_params for operator objects, replacing fixed params2; (2) Centralized GEMM quantization parameter calculation in tests by introducing calculate_quantization_params.h to improve reuse and consistency; (3) Int8 batch matrix multiplication support in the XNNPACK subgraph, enabling quantized inputs/outputs; (4) Dynamic retrieval of GEMM microkernel MR/NR and fixes to MR_packed test handling to improve reliability; (5) TensorFlow Lite integration upgrade to newer XNNPACK to boost performance and quantization support. Overall impact: improved inference performance, broader quantized support, and reduced validation drift, with maintainable code changes and clearer interfaces. Technologies/skills demonstrated include C++ optimization, GEMM and quantization algorithms, test tooling, and cross-repo collaboration for performance-focused enhancements.

June 2025

7 Commits • 2 Features

Jun 1, 2025

June 2025 performance-focused month for google/XNNPACK. Key outcomes include expanded testing coverage for deconvolution-2d, consolidation and extension of batch matrix multiply paths (non-constant weights, Int8xInt8 path, and weight-configuration unification), and targeted bug fixes and cleanup to improve correctness and maintainability. These work items collectively boost reliability, enable broader deployment (including TFLite paths), and showcase solid low-level optimization, refactoring, and test engineering skills.

May 2025

1 Commits • 1 Features

May 1, 2025

May 2025 monthly summary for google/XNNPACK: Key feature delivered—Deconvolution Padding Support enabling padding in deconvolution with dilation-aware limits, along with updated tests. This expands supported configurations, reduces integration risk for models using deconv layers, and improves deployment flexibility. No major bugs fixed this month; achievements centered on delivering robust padding support and strengthening test coverage. Technologies demonstrated include C/C++, XNNPACK padding/dilation logic, and test automation.

April 2025

1 Commits

Apr 1, 2025

2025-04 Monthly summary for google/XNNPACK: No-padding Deconvolution Test Validation updated to align with required no-padding behavior. This work improves test reliability, CI stability, and overall quality without touching production code.

March 2025

15 Commits • 7 Features

Mar 1, 2025

March 2025 performance-focused month for google/XNNPACK. Delivered cross-architecture reduction kernels across multiple precisions with SIMD wrappers, standardized the reduction interface in the subgraph API, and strengthened test infrastructure to improve reliability and CI stability. The work enables faster, more energy-efficient reductions for quantized and FP workloads on mobile and edge devices, with consistent operator behavior across architectures.

February 2025

6 Commits • 4 Features

Feb 1, 2025

February 2025 performance highlights for google/XNNPACK: Delivered substantial feature work, API cleanups, and test coverage that enhance configurability, performance, and reliability across Conv2D/Deconvolution2D paths and elementwise processing.

Activity

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Quality Metrics

Correctness95.4%
Maintainability88.6%
Architecture93.6%
Performance93.6%
AI Usage22.6%

Skills & Technologies

Programming Languages

BazelCC++CMakePythonShellStarlark

Technical Skills

AI developmentAPI DesignAPI designARM NEONARM NEON IntrinsicsARM NEON programmingARM architectureARM assemblyAVX optimizationAVX2AVX2 programmingAVX512AVX512 optimizationAssemblyAssembly Language (implied)

Repositories Contributed To

6 repos

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

google/XNNPACK

Feb 2025 Feb 2026
12 Months active

Languages Used

CC++BazelCMakePythonShellStarlark

Technical Skills

Build SystemsCC++Code refactoringEmbedded SystemsEmbedded systems

google-ai-edge/LiteRT

Dec 2025 Feb 2026
2 Months active

Languages Used

C++CMakePython

Technical Skills

AI developmentC++CMakeLibrary ManagementTensorFlowmachine learning

Intel-tensorflow/tensorflow

Jul 2025 Jul 2025
1 Month active

Languages Used

C++CMakePython

Technical Skills

C++CMakeMachine LearningPerformance OptimizationTensorFlowdependency management

ROCm/tensorflow-upstream

Dec 2025 Dec 2025
1 Month active

Languages Used

C++CMakePython

Technical Skills

C++CMakeLibrary ManagementMachine LearningTensorFlow

Intel-tensorflow/xla

Dec 2025 Dec 2025
1 Month active

Languages Used

Python

Technical Skills

dependency managementlibrary managementperformance optimization

google-ai-edge/mediapipe

Jan 2026 Jan 2026
1 Month active

Languages Used

C++

Technical Skills

C++algorithm designmachine learning

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