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Petra Alexson

PROFILE

Petra Alexson

Worked extensively on embedded systems and firmware development for the tenstorrent/tt-zephyr-platforms and tenstorrent/luwen repositories, delivering features that improved hardware reliability, telemetry, and recovery workflows. Leveraged C, Python, and Rust to implement robust power management, thermal monitoring, and modular EEPROM configuration, while enhancing system observability through structured telemetry instrumentation. Introduced containerized recovery tooling and automated CI/CD pipelines to streamline hardware onboarding and field recovery processes. Addressed packaging and integration issues using DevOps practices, Docker, and GitHub Actions, and maintained code quality through targeted refactoring and test coverage. The work emphasized maintainability, cross-platform compatibility, and operational efficiency across hardware and software boundaries.

Overall Statistics

Feature vs Bugs

83%Features

Repository Contributions

52Total
Bugs
5
Commits
52
Features
24
Lines of code
4,906
Activity Months10

Work History

March 2026

4 Commits • 2 Features

Mar 1, 2026

March 2026 monthly summary focusing on key accomplishments for tenstorrent/tt-zephyr-platforms. Delivered two major capability sets: (1) EEPROM configuration modularity to decouple device initialization from JEDEC-ID sequencing, and (2) wormhole recovery tooling and distribution enhancements with multi-target support, containerized assets, and CI/CD integration. Both initiatives improved maintainability, robustness, and time-to-recover in field scenarios, aligning with platform goals for reliability and rapid hardware onboarding. Overall impact: reduced hardware-specific fragility, streamlined onboarding of new devices, and accelerated recovery workflows through automated tooling and distribution pipelines. Demonstrated solid cross-domain collaboration between C modular design, Python tooling, and DevOps practices.

February 2026

6 Commits • 2 Features

Feb 1, 2026

February 2026 monthly summary focused on delivering robust Wormhole recovery tooling and strengthening flash/EEPROM reliability for the tenstorrent/tt-zephyr-platforms repo, with clear business value in safer recoveries and cross-device support.

November 2025

2 Commits • 1 Features

Nov 1, 2025

2025-11 monthly delivery for tenstorrent/luwen: improved packaging reliability and release automation. Fixed a critical Debian packaging issue by correcting the pyluwen source path after a refactor, and extended the release workflow to support selectable version bumps (patch/minor/major), reducing manual steps and aligning with semantic versioning.

October 2025

2 Commits • 2 Features

Oct 1, 2025

October 2025: Delivered key telemetry instrumentation across two repositories to improve observability and power management. In tt-zephyr-platforms, exposed TDP_LIMIT_MAX as a telemetry value by adding TAG_TDP_LIMIT_MAX and wiring the chip's limit into static telemetry writes. In luwen, introduced telemetry data points for Blackhole chip limits and updated tag definitions and the Telemetry struct to include limit values. These changes enable real-time monitoring of power/thermal bounds and support data-driven capacity planning. No major bugs fixed this month. Overall impact: increased visibility, faster diagnostics, and better risk management for thermal and power budgets. Technologies/skills demonstrated: telemetry instrumentation, C/C++ code changes, telemetry tagging, cross-repo coordination, static telemetry writes, chip-level telemetry data modeling.

September 2025

2 Commits

Sep 1, 2025

September 2025 monthly summary focusing on stability improvements in telemetry and CI hardware tests for tenstorrent/luwen. Delivered two critical bug fixes that enhance reliability, improve error diagnosis, and maintain CI coverage for hardware tests.

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary for tenstorrent/luwen: Focused maintenance to ensure long-term stability and security through dependency updates. Upgraded dependencies to address compatibility and security concerns, including luwen 0.7.4 and luwen-if 0.6.7. Implemented via a dedicated version-bump commit (4ab3512f8f93128596ed8d6390d186a1f15972fd). The change reduces technical debt, aligns with downstream integration cycles, and sets a clean baseline for future feature work.

June 2025

10 Commits • 5 Features

Jun 1, 2025

June 2025 monthly summary for Tenstorrent development across luwen, tt-kmd, and tt-zephyr-platforms. Focused on delivering observability, reliability, and debugging capabilities that drive operational efficiency and system stability. Key work spanned telemetry enrichment, device attribute exposure for monitoring, auto-recovery mechanisms, watchdog reliability, and post-mortem debugging support.

May 2025

15 Commits • 6 Features

May 1, 2025

Monthly summary for 2025-05 for tenstorrent/tt-zephyr-platforms focused on delivering observable business value and robust technical enhancements across telemetry, initialization, power management, fan control, TBP tuning, and code quality. Key outcomes include improved ASIC telemetry visibility with 64-bit IDs, a more reliable startup sequence with upfront power-limit detection and readiness checks, centralized PGOOD handling with test coverage, quieter startup via safety-driven fan control, and documented TBP stability improvements. These changes collectively enhance system reliability, diagnostic capability, and maintainability while reducing operational noise and risk during hardware boot and power transitions.

April 2025

8 Commits • 3 Features

Apr 1, 2025

April 2025 monthly summary focused on delivering core thermal management, telemetry, and targeted control improvements across two repositories (tt-zephyr-platforms and tt-kmd). The work emphasizes business value through safer, more predictable performance and enhanced visibility into thermal and power data.

March 2025

2 Commits • 2 Features

Mar 1, 2025

March 2025 performance summary for tenstorrent/tt-zephyr-platforms: Delivered two critical hardware features enhancing fault resilience and measurement accuracy, contributing to uptime and data quality. Implemented Power Fault Handling System (PGOOD interrupt) on the BH Chip with a fault sequence that asserts a board fault LED and triggers ASIC reset on PGOOD drop; fault clears on recovery; repeated faults escalate to a severe fault requiring a power cycle. Implemented BMC-SMC Current Data Formatting Enhancement (Signed 16.16) to standardize input current formatting for BMC↔SMC data transmission, improving accuracy and usability of current measurements. No bugs fixed were reported for this scope in March 2025. These changes demonstrate strong hardware-software integration and set the foundation for safer, more reliable operation and better analytics.

Activity

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Quality Metrics

Correctness94.4%
Maintainability91.2%
Architecture90.8%
Performance89.6%
AI Usage21.6%

Skills & Technologies

Programming Languages

BashCConfigurationDockerfileMarkdownPythonRustTextYAML

Technical Skills

C ProgrammingC programmingCI/CDCargoCode RefactoringContainerizationContinuous IntegrationControl SystemsData SerializationDebuggingDevOpsDevice DriversDevice TreeDockerDocumentation

Repositories Contributed To

3 repos

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

tenstorrent/tt-zephyr-platforms

Mar 2025 Mar 2026
7 Months active

Languages Used

CConfigurationTextMarkdownPythonYAMLBashDockerfile

Technical Skills

Embedded SystemsFirmware DevelopmentGPIO ConfigurationHardware InteractionInterrupt HandlingCode Refactoring

tenstorrent/luwen

Jun 2025 Nov 2025
5 Months active

Languages Used

PythonRustYAML

Technical Skills

Data SerializationEmbedded SystemsFirmware DevelopmentHardware MonitoringRust ProgrammingTelemetry

tenstorrent/tt-kmd

Apr 2025 Jun 2025
2 Months active

Languages Used

C

Technical Skills

Embedded SystemsHardware MonitoringKernel DevelopmentDevice Drivers