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Defne Dilbaz

PROFILE

Defne Dilbaz

Deniz Dilbaz contributed to the Tenstorrent ecosystem by building and optimizing machine learning infrastructure across repositories such as tt-torch, tt-mlir, and tt-forge-models. He developed features for model integration, compiler optimization, and distributed training, focusing on robust testing, memory efficiency, and hardware compatibility. Using Python, C++, and MLIR, Deniz implemented backend enhancements, sharding strategies, and fusion passes that improved runtime performance and reliability for transformer and vision workloads. His work included expanding model loader capabilities, automating documentation, and refining CI/CD pipelines. The depth of his engineering is reflected in cross-repo solutions that enabled scalable, maintainable, and performant ML workflows.

Overall Statistics

Feature vs Bugs

78%Features

Repository Contributions

113Total
Bugs
16
Commits
113
Features
56
Lines of code
9,029,216
Activity Months18

Work History

April 2026

1 Commits • 1 Features

Apr 1, 2026

April 2026: Delivered GLM 5.1 Variant Support in the Model Loader for tenstorrent/tt-forge-models, expanding compatibility and readiness for GLM 5.1 deployments. No major bugs fixed this month. Impact: broader model framework support, smoother integration path for future variants, and improved deployment confidence. Technologies/skills demonstrated: model-loading architecture, variant-aware loading, versioned commits, and repository tooling.

March 2026

4 Commits • 3 Features

Mar 1, 2026

March 2026 highlights: Delivered end-to-end complex number support in StableHLO/Compiler and integrated reliability-focused patches to enable nightly validation of complex paths. Implemented StableHLO tensor operation fusion and broadcast optimization to reduce reshapes and unnecessary concatenations, improving throughput on concatenation-heavy graphs. Expanded test coverage with GLM 5 variant added to the tt-forge-models suite, ensuring compatibility with the latest model version. These efforts deliver tangible business value by enabling complex-math workloads, lowering runtime overhead, and increasing reliability of model testing across tt-mlir and tt-forge-models.

February 2026

10 Commits • 4 Features

Feb 1, 2026

February 2026 highlights: Delivered core capabilities in GPT-OSS integration, sharding optimization, and benchmarking stability across three repos (tt-forge-models, tt-mlir, tt-xla). Key outcomes include reliable model loading with tokenizer init options and device-specific 2D shards for gpt-oss-120b, a StableHLO fusion pass to optimize sharding, and expanded GPT-OSS benchmarking with configurable batch sizes and improved test coverage. Additional improvements reduced flaky tests through test coverage enhancements (decode/prefill on llmbox with a 2x4 mesh) and stability fixes such as variant-name alignment and temporary PCC checks adjustments to mitigate known issues.

January 2026

5 Commits • 3 Features

Jan 1, 2026

Concise monthly summary for January 2026 focusing on GPT-OSS sharding, testing, and loader reliability across tt-xla and tt-forge-models. Delivered a new tensor-decomposition-based sharding approach for GPT-OSS, expanded model testing (20B/120B) with dequantization compatibility, and fixed critical shard parsing bugs in the model loader. These efforts improved scalability, reliability, and performance while broadening test coverage and maintaining alignment with quantization configurations.

December 2025

7 Commits • 3 Features

Dec 1, 2025

December 2025 performance summary: Delivered focused, business-value driven improvements across TT-MLIR and TT-Forge-Models that enhance distributed training stability, attention performance, and model configurability. The work strengthened sharding capabilities, expanded multi-device deployments, and improved testing coverage and collaboration workflows to accelerate delivery and code quality.

November 2025

6 Commits • 2 Features

Nov 1, 2025

November 2025 performance summary focusing on cross-repo MLIR/XLA optimizations and model loading capabilities. Delivered key features, stabilized fusion-based transforms, and expanded model loading support across tt-mlir, tt-xla, and tt-forge-models. The work emphasizes business value through faster inference, improved reliability, and broader model compatibility. Demonstrated expertise in graph-level optimizations, op rewrites, and test-driven validation across multiple repos.

October 2025

6 Commits • 4 Features

Oct 1, 2025

October 2025 delivered targeted platform-level improvements across two Tenstorrent repos (tt-xla and tt-mlir), focusing on expanding test coverage, accelerating transformer workloads, and strengthening compiler/dialect capabilities. In tt-xla, we expanded test coverage for attention concat_heads (including transpose), added a BERT MHA create heads test, and extended element-wise scatter tests in the JAX/TT-XLA path, improving reliability and catching edge cases earlier. In tt-mlir, we implemented a matmul+add fusion into a single linear operation (with a batched-input bias workaround), registered QKV split and split heads ops with TTIR/TTNN definitions and tests, and enhanced TTNN scatter support for element-wise and multi-dimensional cases along with accompanying conversion patterns and a decomposition workaround. These results drive better runtime performance, enable more aggressive transformer optimizations, and lay the groundwork for broader stack-wide optimizations.

September 2025

2 Commits • 2 Features

Sep 1, 2025

September 2025 monthly summary focusing on delivering cross-repo compatibility and datatype support enhancements to enable efficient ML workloads. Highlights include Python 3.11 environment upgrade for tt-torch and TTNN reshape support for ui8 in tt-mlir, with associated tests and commit references. These changes improve performance, reliability, and cross-component integration with tt-xla.

August 2025

4 Commits • 1 Features

Aug 1, 2025

August 2025: Delivered targeted reliability improvements and transformer-optimization work across tt-torch and tt-mlir, driving CI stability and runtime performance for transformer workloads. Key outcomes include a correctness fix in PyTorch Dynamo backend, nightly-build stability via dependency pinning, and the introduction of fused-transformer ops and TTNN reshape folding with accompanying tests.

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025 (2025-07): Focused on ensuring build/install reliability and improving developer onboarding for tt-forge. Delivered a critical documentation update for TT-Torch by correcting the Build and Install Instructions URL in the README, directing users to the correct setup guidance and reducing potential build-time errors. No major bug fixes were recorded this month; maintenance efforts centered on documentation accuracy and user experience. This work supports faster onboarding, fewer support questions around setup, and smoother adoption of tt-torch in downstream workflows.

June 2025

15 Commits • 3 Features

Jun 1, 2025

Summary for 2025-06: Delivered substantial improvements to the tt-torch testing ecosystem, elevating test coverage and hardware reliability. Implemented Seamless M4T integration into end-to-end compile tests and weekly op-by-op tests, added a 'full-eval' path, introduced a torchaudio test group, and expanded Phi-3.5-MoE-instruct and Phi-3.5 Vision tests with direct-model loading; set model_group = 'red'. Added 'tt' backend for torch.compile and robust MLIR dumps guarded by a user-enabled flag with a model-name setter to prevent misassociation. Restored mistral test coverage and stabilized Flux, Pixtral AutoProcessor, and ONNX tests on Tenstorrent hardware, including memory/OOM fixes and dtype casting. Updated tt-torch documentation to clarify testing workflows, build options, and demos. Technologies demonstrated: MLIR tooling, torch.compile backend integration, test automation, and cross-hardware validation, delivering business value through higher quality releases and faster iteration.

May 2025

9 Commits • 5 Features

May 1, 2025

In May 2025, delivered major enhancements across the tt-torch and tt-mlir repos that broaden model coverage, harden CI, and improve memory efficiency, accelerating validation cycles and diagnostics. Key features include Falcon 3 model support in the op-by-op testing framework with new tests and nightly configuration; Stable Diffusion 3.5 testing infrastructure with memory optimizations and workflow tweaks; generative models compilation restructuring to improve memory management and error handling with a new forward-pass path; MLIR dumps generated and uploaded as nightly artifacts controlled by TT_TORCH_SAVE_MLIR; and a PyTorch 2.7 upgrade with MLIR/artifact handling improvements and broader test coverage (torchaudio). Major fixes targeted CI reliability for Stablehlo and Onnx (fixing op-by-op flows with MultiChipGraph and adding TTNN_IR compile-depth handling) and uplift stability (flux tests temporarily skipped). A README readme link in tt-mlir was also updated to reflect Getting Started guidance. These efforts together improved test coverage, reduced memory pressure, enhanced diagnostics, and accelerated iteration on model tooling, delivering tangible business value through more reliable validation and faster feature delivery.

April 2025

12 Commits • 7 Features

Apr 1, 2025

April 2025 monthly summary for tenstorrent/tt-torch highlights substantial feature delivery, improved testing rigor, and broader model support, translating to faster experimentation cycles, more reliable nightly runs, and stronger product readiness for diverse workloads.

March 2025

5 Commits • 3 Features

Mar 1, 2025

March 2025 performance summary focused on delivering modular execution, expanding backends, and strengthening reliability and CI coverage across two primary repos (tt-mlir and tt-torch). Highlights include feature delivery enabling operation-by-operation processing of StableHLO graphs, a new ONNX backend with op-by-op execution, comprehensive YOLOv4 PyTorch tests with CI updates, and robust stability fixes that mitigate multiprocessing memory errors and flaky tests.

February 2025

7 Commits • 4 Features

Feb 1, 2025

February 2025: TT-Torch repository focus on expanding test coverage, stabilizing CI, and enabling large-model testing while updating documentation. The work improved reliability and reduced maintenance toil, setting the stage for faster, safer releases across model families.

January 2025

7 Commits • 4 Features

Jan 1, 2025

January 2025 (2025-01) focused on strengthening CI/CD reliability, expanding automated reporting, and enabling deeper model testing in tt-torch. Delivered four major features that improve business value: automated TTNN report generation, stabilized docs build and GitHub Pages publishing, nightly test status reporting, and Deepseek model support in CI, supported by containerized workflows and memory-aware test configurations. These changes reduce manual overhead, improve visibility of model status, and accelerate safe model iteration.

December 2024

7 Commits • 2 Features

Dec 1, 2024

December 2024 monthly performance summary for tenstorrent/tt-torch. Focused on reinforcing documentation tooling and expanding CI/test coverage to improve release confidence and developer productivity. Key infrastructure improvements included JSON support in docs generation, tooling hardening, and broader nightly validation across core models. Addressed stability issues in docs pipeline and refined test strategies to reduce false positives.

November 2024

5 Commits • 4 Features

Nov 1, 2024

2024-11 Monthly Summary for developer work focusing on business value and technical achievements across the tenstorrent repositories (tt-torch and tt-mlir).

Activity

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Quality Metrics

Correctness89.4%
Maintainability86.0%
Architecture85.0%
Performance80.2%
AI Usage27.8%

Skills & Technologies

Programming Languages

C++CMakeDockerfileJSONJinjaMLIRMarkdownPyTorchPythonShell

Technical Skills

API designAttention MechanismsBERTBackend DevelopmentBenchmarkingBug FixBuild System ConfigurationC++C++ DevelopmentCI/CDCI/CD ConfigurationCI/CD Pipeline ManagementCode OrganizationCode RefactoringCollaboration

Repositories Contributed To

5 repos

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

tenstorrent/tt-torch

Nov 2024 Sep 2025
10 Months active

Languages Used

C++MarkdownPythonYAMLJSONDockerfileShellJinja

Technical Skills

DebuggingDocumentationGraph CompilationIntermediate Node PruningPyTorchPyTorch FX

tenstorrent/tt-mlir

Nov 2024 Mar 2026
10 Months active

Languages Used

C++MLIRPythonMarkdownShell

Technical Skills

Compiler DevelopmentIntermediate RepresentationMachine Learning FrameworksTensor OperationsMLIRScripting

tenstorrent/tt-xla

Oct 2025 Feb 2026
4 Months active

Languages Used

PyTorchPythonYAML

Technical Skills

BERTJAXMHANumerical ComputingPyTorchTesting

tenstorrent/tt-forge-models

Nov 2025 Apr 2026
6 Months active

Languages Used

Python

Technical Skills

Machine LearningModel DeploymentNatural Language ProcessingPyTorchData ProcessingDeep Learning

tenstorrent/tt-forge

Jul 2025 Jul 2025
1 Month active

Languages Used

Markdown

Technical Skills

Documentation