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Andrew Lewycky

PROFILE

Andrew Lewycky

Alex Lewycky developed and maintained core device drivers and embedded firmware for the tenstorrent/tt-kmd and tt-zephyr-platforms repositories, focusing on reliability, scalability, and hardware compatibility. He engineered features such as DMA address extension, memory-mapping for large DMA buffers, and robust I2C/SMBus support, leveraging C, C++, and Zephyr RTOS. His work included CI/CD automation, kernel driver versioning, and test infrastructure improvements, ensuring seamless integration and deployment across evolving Linux and Zephyr environments. By addressing low-level memory management, interrupt handling, and system initialization, Alex delivered solutions that reduced integration risk and improved maintainability for complex, real-time hardware platforms.

Overall Statistics

Feature vs Bugs

69%Features

Repository Contributions

76Total
Bugs
15
Commits
76
Features
33
Lines of code
5,978
Activity Months17

Work History

April 2026

1 Commits • 1 Features

Apr 1, 2026

April 2026 monthly summary for tenstorrent/tt-kmd focused on stabilizing CI/CD and maintaining build reliability. The month centered on upgrading the Nix installer in the GitHub Actions workflow to ensure long-term compatibility and ongoing support.

January 2026

1 Commits • 1 Features

Jan 1, 2026

January 2026: Strengthened kernel compatibility validation for tenstorrent/tt-kmd by updating the mass-build-test CI workflow to target Linux kernel 6.18. This includes automated validation using the 5.2-6.18 scenario to surface regressions early. No major bugs fixed this month; the work focused on CI reliability, forward-compatibility, and reducing release risk. Technologies demonstrated: CI/CD automation, Linux kernel testing, and build/test pipeline optimization.

November 2025

2 Commits • 1 Features

Nov 1, 2025

November 2025 monthly summary for tenstorrent/tt-zephyr-platforms focusing on feature governance and reliable notification delivery across hardware models. Delivered a hardware-aware Doppler feature toggle and stabilized inter-component notifications to optimize power management and reduce noise, enabling safer feature rollouts and maintainable firmware configuration.

October 2025

1 Commits

Oct 1, 2025

October 2025 (2025-10) Monthly Summary for tenstorrent/tt-zephyr-platforms. Key focus this month was enhancing debugging reliability in the Zephyr platform integration by fixing the GDB detach behavior for both DMC and SMC configurations. The implemented fix ensures the target resumes execution immediately after GDB detaches, eliminating residual halts and improving developer workflow across the platform.

September 2025

21 Commits • 7 Features

Sep 1, 2025

This monthly summary covers Sep 2025 for the tenstorrent/tt-zephyr-platforms repository, highlighting delivered features, fixes, impact, and technical capabilities demonstrated. The team focused on stabilizing core initialization, optimizing fan and PWM control, and improving observability and maintainability of the DMC/fan control stack while ensuring safe, scalable device operation.

August 2025

7 Commits • 3 Features

Aug 1, 2025

August 2025: Delivered high-impact reliability and performance improvements in the tt-zephyr-platforms repo, including robust CM2DM messaging, wrap-around bug fixes for NOC counters, sensor data type standardization, and centralized reset handling. These changes reduce runtime hangs, improve data integrity, and streamline maintenance.

July 2025

21 Commits • 7 Features

Jul 1, 2025

July 2025 (2025-07) – Platform-level improvements in tenstorrent/tt-zephyr-platforms delivering stronger reliability, security, and performance across I2C/SMBus, PCIe, messaging, and safety features. The team completed multiple feature deliveries, fixed critical bugs, and laid groundwork for future portability and performance optimizations.

June 2025

1 Commits • 1 Features

Jun 1, 2025

Concise monthly summary for 2025-06 focused on delivering STM32 SMBus block read support in Zephyr for the tt-zephyr-platforms repo, with patch management improvements and CI-readiness. This work expands I2C/SMBus capabilities on STM32, enabling efficient block transactions and smoother integration in Zephyr-based deployments.

May 2025

3 Commits • 2 Features

May 1, 2025

May 2025: Delivered measurable business value across two repos by shrinking firmware footprint, modernizing I2C/SMBus handling to a Zephyr-aligned stack, and hardening SMBus reliability on STM32. The work reduces memory pressure on constrained devices, simplifies the driver model, and improves maintainability through patch-based documentation.

April 2025

3 Commits • 2 Features

Apr 1, 2025

April 2025 monthly summary for tenstorrent/tt-kmd. Delivered key fixes and updates that improve build reliability, test coverage, and deployment readiness: a bug fix for mass-build-test KDIR handling in containerized CI, a test-suite enhancement enabling std::array usage, and a version bump to TTKMD 1.33 across docs and module config.

March 2025

1 Commits • 1 Features

Mar 1, 2025

March 2025 month summary focusing on key accomplishments and business value.

January 2025

3 Commits • 1 Features

Jan 1, 2025

January 2025 monthly summary for tenstorrent/tt-kmd. Focused on strengthening test infrastructure, increasing hardware-test coverage, and aligning validation with telemetry capabilities. Delivered key features and bug fixes with clear business value: improved test reliability on older systems; enhanced hardware awareness in tests; and telemetry-aware test behavior, reducing flaky failures and speeding issue diagnosis.

December 2024

1 Commits • 1 Features

Dec 1, 2024

December 2024: Delivered the Tenstorrent Kernel Module Driver (TTKMD) v1.31 release update for the tenstorrent/tt-kmd repository, aligning release artifacts (README.md, dkms.conf, module.c) with the new driver version to enable reliable packaging, testing, and deployment. The update was committed as TTKMD v1.31 (e8e660e9bd90ac4b67fc62c8ec44e08e07bed0be). Major bugs fixed: none reported this month. This work improves customer upgrade paths, reduces integration risk, and strengthens release readiness for downstream kernels and DKMS-based deployments.

November 2024

1 Commits • 1 Features

Nov 1, 2024

November 2024 focus: deliver kernel driver version bump to 1.30 for tenstorrent/tt-kmd and update release metadata (README, dkms.conf, module.c) to reflect the new release. This aligns the driver with newer kernels and packaging standards, enhancing deployment reliability and maintainability.

May 2024

6 Commits • 2 Features

May 1, 2024

Month: 2024-05 — Focused on reliability, scalability, and code quality for tenstorrent/tt-kmd. Delivered CI automation and code quality workflows, and expanded memory-mapping capacity for 32-bit offsets with robust tests. These changes reduce integration risk, improve build feedback, and enable larger DMA buffers for higher-throughput workloads.

December 2023

2 Commits • 1 Features

Dec 1, 2023

December 2023 monthly summary for tenstorrent/tt-kmd: Delivered key feature support for a new Blackhole device class and aligned driver documentation with a version bump. This work enhances hardware compatibility, deployment reliability, and maintainability. Key achievements include implementing Blackhole device class support (initialization, cleanup, and registration flow) and updating the driver to 1.30-bh with installation/uninstallation commands reflected in the docs.

July 2023

1 Commits • 1 Features

Jul 1, 2023

July 2023: Delivered Extended DMA Address Capability for Device Classes in tenstorrent/tt-kmd. Added a new DMA address bits field to device classes and updated initialization to use it, enabling support for larger DMA addresses and improving hardware compatibility. This work lays the groundwork for future DMA-intensive features and strengthens system-level scalability.

Activity

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Quality Metrics

Correctness92.6%
Maintainability91.8%
Architecture89.8%
Performance87.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

CC++CMakeProtoBufPythonYAMLcfglinker script

Technical Skills

Build SystemsC ProgrammingC programmingC++C++ developmentCI/CDCode CleanupCode FormattingCode QualityCommunication ProtocolsCompiler FlagsConfiguration ManagementContinuous IntegrationDebuggingDevOps

Repositories Contributed To

3 repos

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

tenstorrent/tt-zephyr-platforms

Mar 2025 Nov 2025
8 Months active

Languages Used

CYAMLCMakecfgProtoBuf

Technical Skills

Driver DevelopmentEmbedded SystemsInterrupt HandlingDevice DriversI2CI2C/SMBus

tenstorrent/tt-kmd

Jul 2023 Apr 2026
9 Months active

Languages Used

CC++YAMLPython

Technical Skills

C programmingdevice driver developmentkernel developmentdriver developmentC++ developmentCI/CD

AmbiqMicro/ambiqzephyr

May 2025 May 2025
1 Month active

Languages Used

linker script

Technical Skills

Embedded SystemsLinker ScriptingMemory Management