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Dariusz Mroz

PROFILE

Dariusz Mroz

Dariusz Mroz developed and enhanced GPU benchmarking and testing infrastructure across the intel/compute-benchmarks and oneapi-src/level-zero-tests repositories, focusing on reliability, maintainability, and performance insight. He implemented new benchmark scenarios for multi-kernel timing and kernel switch latency, expanded atomic operation coverage, and modernized test parameterization using C++ and Google Test. In Level Zero test suites, he improved kernel mutation testing, consolidated module validation, and extended device property inspection, leveraging low-level programming and API integration. His work addressed concurrency, reduced test flakiness, and streamlined CI feedback, demonstrating a deep understanding of performance benchmarking and robust test harness engineering in C++ environments.

Overall Statistics

Feature vs Bugs

64%Features

Repository Contributions

11Total
Bugs
4
Commits
11
Features
7
Lines of code
2,318
Activity Months8

Work History

October 2025

1 Commits • 1 Features

Oct 1, 2025

Month: 2025-10 — Focused on strengthening testing quality and maintainability of the benchmark suite in intel/compute-benchmarks. Key feature delivered: modernization of the benchmark test parameterization by switching from ::testing::ValuesIn to ::testing::Combine, improving clarity and extensibility. Commit reference: 3e91a055f104c7b4e369aec03480ba1b260d97cb. No major bugs fixed this month in the repository. Impact: clearer, more scalable parameterized tests reduce onboarding time for new benchmarks and stabilize CI runs, contributing to more reliable performance measurements. Technologies/skills demonstrated: Google Test parameterization patterns (::testing::Combine), C++ test infrastructure refactor, maintainability-focused engineering, and CI-readiness.

September 2025

3 Commits • 2 Features

Sep 1, 2025

For 2025-09, delivered targeted improvements across two critical repositories to enhance test harness capabilities and benchmark reliability. Key outcomes include extended device property inspection in the Level Zero test harness and expanded Level Zero support in the atomic benchmarks, plus a critical bug fix to ensure accurate benchmark statistics when no-op runs occur. These changes improve visibility into hardware behavior, reliability of performance evaluations, and broaden cross-API benchmarking coverage.

August 2025

1 Commits • 1 Features

Aug 1, 2025

August 2025: Expanded intel/compute-benchmarks coverage by adding a new KernelSwitchLatency benchmark scenario with expanded parameters (more thread counts and an additional boolean flag). This enhances performance characterization across varied conditions, improving measurement fidelity and supporting data-driven optimization and capacity planning. All changes were centralized in a single commit, enabling traceability and reproducibility. No major bugs fixed in this repository this month.

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025: Expanded benchmarking capabilities in intel/compute-benchmarks to enable accurate multi-kernel timing and regression detection. Delivered a new benchmark scenario to measure total execution time of multiple empty kernels using global timestamps, expanded test coverage, and added supporting code to enable precise timing. This supports faster performance tuning and more reliable performance regressions detection.

April 2025

1 Commits

Apr 1, 2025

Monthly summary for 2025-04: Focused on improving test robustness and reliability in oneapi-src/level-zero-tests. Implemented changes to Scratch Space Test Kernel to handle larger scratch space usage and to skip non-applicable tests, improving accuracy and CI efficiency.

February 2025

1 Commits

Feb 1, 2025

February 2025 - oneapi-src/level-zero-tests: Consolidated module format validation to streamline module creation path. Removed redundant validation in the test harness; zeModuleCreate now validates module format directly. This reduces maintenance, mitigates risk of diverging validation paths, and speeds up test execution.

January 2025

1 Commits • 1 Features

Jan 1, 2025

January 2025: Delivered Mutable group count descriptor support in the Level Zero code generator for intel/gits, enabling dynamic group sizes and greater flexibility in generated kernels. Implemented in generator_l0.py with ze_mutable_group_count_exp_desc_t integration (commit adc09fbcfa682bbc6b8384b5ac2c2dbe7da10b76). Impact includes better support for dynamic workloads, reduced future hard-coding, and smoother adaptation to varying runtime conditions. Activities included design/implementation and integration work within the generator pipeline.

November 2024

2 Commits • 1 Features

Nov 1, 2024

November 2024 monthly summary for oneapi-src/level-zero-tests. Focused on reliability and test coverage for concurrency-heavy scenarios: fixed event indexing for test_cmdqueue and expanded mutable command list kernel mutation tests. These changes reduce flaky test outcomes and improve early regression detection.

Activity

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Quality Metrics

Correctness93.6%
Maintainability91.0%
Architecture89.2%
Performance87.2%
AI Usage20.0%

Skills & Technologies

Programming Languages

CC++CLMarkdownOpenCL CPython

Technical Skills

API DevelopmentAPI IntegrationAPI TestingAPI integrationBenchmarkingC++C++ DevelopmentCode GenerationCode RefactoringConcurrencyDevice driver testingGPU ComputingGoogle TestKernel DevelopmentLevel Zero API

Repositories Contributed To

3 repos

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

oneapi-src/level-zero-tests

Nov 2024 Sep 2025
4 Months active

Languages Used

C++OpenCL CCL

Technical Skills

API TestingC++ConcurrencyKernel DevelopmentLow-Level ProgrammingLow-level Programming

intel/compute-benchmarks

Jul 2025 Oct 2025
4 Months active

Languages Used

C++MarkdownC

Technical Skills

BenchmarkingC++ DevelopmentLow-Level API (Level Zero)Performance TestingC++Testing

intel/gits

Jan 2025 Jan 2025
1 Month active

Languages Used

Python

Technical Skills

API DevelopmentCode Generation

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