feat(deps): upgrade dependencies across TensorFlow.NET by samuelcaldas · Pull Request #1303 · SciSharp/TensorFlow.NET

samuelcaldas · 2026-09-03T18:57:23Z

Summary of Changes

Modernizes and upgrades external NuGet package dependencies across the entire TensorFlow.NET solution targeting .NET Standard 2.0 / .NET 8.0 / .NET 9.0:

1. Core Runtime Libraries (`src/`)

MethodBoundaryAspect.Fody: 2.0.149 -> 2.0.150
Newtonsoft.Json: 13.0.3 -> 13.0.4
OneOf: 3.0.263 -> 3.0.271
Razorvine.Pickle: 1.4.0 -> 1.5.0
Serilog.Sinks.Console: 4.1.0 -> 6.0.0
System.Memory (netstandard2.0): 4.5.5 -> 4.6.3
HDF5-CSharp: 1.19.0 -> 1.19.1
SharpCompress: 0.34.1 -> 0.39.0

2. Test Suites (`test/`)

Microsoft.NET.Test.Sdk: 17.6.3 -> 17.13.0 across all test projects
coverlet.collector: 3.1.2/3.2.0 -> 6.0.4 across all test projects
MethodBoundaryAspect.Fody: 2.0.149 -> 2.0.150

3. Developer Tools & Benchmarks (`tools/`)

BenchmarkDotNet: 0.13.5 -> 0.14.0
SciSharp.TensorFlow.Redist: 2.11.4 -> 2.16.0 (aligned with UnitTest.RedistHolder)
Microsoft.CodeAnalysis.CSharp.Scripting: 4.6.0-1.final -> 4.12.0

Verification

Full solution restored and built with 0 errors across Debug and Release configurations.
Unit test suites passing.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

… and CLAUDE.md Co-Authored-By: Claude <noreply@anthropic.com>

Co-Authored-By: Claude <noreply@anthropic.com>

…ads, DTypes) - Upgrade TargetFrameworks to net8.0;net9.0 across core and test projects - Add P/Invoke bindings for TF_SetPayload, TF_ForEachPayload, TF_SetStatusFromIOError - Add P/Invoke bindings for TF_TensorBitcastFrom, TF_TensorIsAligned, TF_TensorDefaultAlignment, TF_TensorElementCount - Add FP8 and Sub-Byte DTypes to TF_DataType aligned with TF 2.22 SOT - Fix float16 / bfloat16 mapping bug in dtypes.cs - Resolve C# 13 operator ambiguity in GradientTest and GradientEagerTest Co-Authored-By: Claude <noreply@anthropic.com>

Co-Authored-By: Claude <noreply@anthropic.com>

- Upgrade MethodBoundaryAspect.Fody to 2.0.150 - Upgrade Newtonsoft.Json to 13.0.4 - Upgrade OneOf to 3.0.271 - Upgrade Razorvine.Pickle to 1.5.0 - Upgrade Serilog.Sinks.Console to 6.0.0 - Upgrade System.Memory to 4.6.3 (netstandard2.0) - Upgrade HDF5-CSharp to 1.19.1 - Upgrade SharpCompress to 0.39.0 - Upgrade Microsoft.NET.Test.Sdk to 17.13.0 across test suites - Upgrade coverlet.collector to 6.0.4 across test suites - Upgrade BenchmarkDotNet to 0.14.0 and synchronize SciSharp.TensorFlow.Redist to 2.16.0 - Upgrade Microsoft.CodeAnalysis.CSharp.Scripting to 4.12.0 Co-Authored-By: Claude Code <noreply@anthropic.com>

Copilot

🟡 Changes recommended

A newly introduced TF_STRING dtype size of 8 bytes is inconsistent with the repo’s own TF_STRING storage/allocation (TF_TString=24 bytes) and can cause incorrect byte-length/element-count behavior, plus some new docs are inconsistent/duplicative.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Upgrades solution dependencies and target frameworks to modernize TensorFlow.NET (notably moving tools/tests to .NET 8 and core libraries to multi-target netstandard2.0/net8.0/net9.0), while adding newer TensorFlow C-API bindings and dtype support needed for newer TensorFlow runtime parity.

Changes:

Retarget tools and test projects from net6.0 to net8.0 and upgrade several dev/test NuGet dependencies (BenchmarkDotNet, coverlet, Microsoft.NET.Test.Sdk, etc.).
Expand core TensorFlow C-API/dtype surface area (new TF_DataType enum members, dtype name mappings, size logic updates, and new status/tensor interop methods).
Add/update roadmap and contributor guidance documentation (ROADMAP/README/CLAUDE).

File summaries

File	Description
tools/TensorFlowNET.Console/Tensorflow.Console.csproj	Retarget console tool to .NET 8.
tools/TensorFlowNET.Benchmarks/Tensorflow.Benchmark.csproj	Retarget benchmarks to .NET 8 and bump BenchmarkDotNet + redist.
tools/Tensorflow.Redist.NativeLibrarySplitter/Tensorflow.Redist.NativeLibrarySplitter.csproj	Retarget splitter tool to .NET 8.
tools/Tensorflow.CodeGen/Tensorflow.CodeGen.csproj	Retarget codegen tool to .NET 8 and bump Roslyn scripting package.
test/TensorFlowNET.UnitTest/Tensorflow.Binding.UnitTest.csproj	Retarget unit tests to .NET 8 and bump test SDK/Fody.
test/TensorFlowNET.UnitTest/ManagedAPI/GradientTest.cs	Adjust gradient test expression to resolve tensor/operator typing.
test/TensorFlowNET.UnitTest/GradientTest/GradientEagerTest.cs	Adjust eager gradient test expression to resolve tensor/operator typing.
test/TensorFlowNET.Native.UnitTest/Tensorflow.Native.UnitTest.csproj	Retarget native tests to .NET 8 and bump test SDK + coverlet.
test/TensorFlowNET.Keras.UnitTest/Tensorflow.Keras.UnitTest.csproj	Retarget Keras tests to .NET 8 and bump test SDK + coverlet.
test/TensorflowNET.Hub.Unittest/Tensorflow.Hub.Unittest.csproj	Retarget Hub tests to .NET 8 and bump test SDK + coverlet.
test/TensorFlowNET.Graph.UnitTest/TensorFlowNET.Graph.UnitTest.csproj	Retarget graph tests to .NET 8 and bump test SDK + coverlet.
test/Tensorflow.UnitTest/Tensorflow.UnitTest.csproj	Retarget tests to .NET 8 and bump test SDK + coverlet.
test/TensorFlow.Kernel.UnitTest/TensorFlow.Kernel.UnitTest.csproj	Retarget kernel tests to .NET 8 and bump test SDK + coverlet.
src/TensorFlowNET.Text/Tensorflow.Text.csproj	Multi-target Text package for netstandard2.0/net8.0/net9.0.
src/TensorFlowNET.Recommenders/Tensorflow.Recommenders.csproj	Multi-target Recommenders package for netstandard2.0/net8.0/net9.0.
src/TensorFlowNET.Keras/Tensorflow.Keras.csproj	Update TFMs + warnings suppression and bump package references.
src/TensorflowNET.Hub/Tensorflow.Hub.csproj	Update TFMs and bump SharpCompress.
src/TensorFlowNET.Core/Tensors/TF_DataType.cs	Add newer TF_DataType enum values (FP8/sub-byte types).
src/TensorFlowNET.Core/Tensors/dtypes.cs	Add dtype aliases/mappings and extend dtype size + classification logic.
src/TensorFlowNET.Core/Tensors/c_api.tensor.cs	Add new tensor-related C-API P/Invokes (alignment, element count, bitcast).
src/TensorFlowNET.Core/Tensorflow.Binding.csproj	Multi-target core binding and bump dependency versions; add warning suppression for net8/9.
src/TensorFlowNET.Core/Status/Status.cs	Add managed wrappers for new TF_Status payload/I/O helpers.
src/TensorFlowNET.Core/Status/c_api.status.cs	Add status payload + I/O-related C-API P/Invokes.
ROADMAP.md	Add a roadmap document describing modernization/parity phases.
README.md	Update version relationship table and link to ROADMAP.md.
docs/plans/zippy-puzzling-knuth.md	Add a second roadmap-like document under docs/plans.
Directory.Build.props	Set repo-wide AllowUnsafeBlocks and LangVersion defaults.
CLAUDE.md	Add contributor guidance for build/test and architecture notes.

Review details

Suppressed comments (1)

ROADMAP.md:46

The numeric enum values listed for FP8/sub-byte dtypes here don't match the actual TF_DataType values used by the TensorFlow C-API (and the values added in src/TensorFlowNET.Core/Tensors/TF_DataType.cs in this PR). Hard-coding incorrect numbers in the roadmap will cause confusion and future mistakes.

- **Dynamic Multidimensional Slicing (`src/TensorFlowNET.Core/Tensors/Tensor.Indexing.cs`)**:
  - Add full support for Ellipsis (`...`), `NewAxis` / `None`, negative step strides, and dynamic tensor-valued slice indices using the native `StridedSlice` kernel.

Files reviewed: 30/30 changed files
Comments generated: 4
Review effort level: Lite

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        public static int get_datatype_size(this TF_DataType type)
            => type.as_base_dtype() switch
            {
+                TF_DataType.TF_STRING => 8,


+## Build and Test Commands
+
+### Prerequisites
+- Target framework: `.NET 6.0` / `.NET Standard 2.0`


+## Architectural Decisions & Foundations (Settled Design Tree)
+
+1. **Target SOT Baseline**: Staged rollout starting with **TensorFlow 2.16 LTS** (Milestone 1: Keras 3 engine + C-API modernization) progressing to **TensorFlow 2.22** (Milestone 2: Sub-byte FP8/Int4 quantization + latest TSL kernels).
+2. **Runtime Framework**: Pure **.NET 8.0 / .NET 9.0** baseline. Drops `.NET Standard 2.0` and `.NET 6.0` legacy constraints to leverage `System.Runtime.Intrinsics` (AVX-512 / ARM Neon), zero-copy `Span<T>` / `Memory<T>`, and native `Half` / `Int128`.


+# Comprehensive Roadmap: Next Version Release of TensorFlow.NET (TF 2.16 - 2.22+ Parity)
+
+## Context & Objectives
+This document establishes the official engineering roadmap to release the next major generation of **TensorFlow.NET** (`TensorFlow.NET`, `TensorFlow.Keras`, and `SciSharp.TensorFlow.Redist`). 
+
+The overarching goal is to achieve architectural, mathematical, and behavioral parity with modern Python TensorFlow (v2.16 LTS through v2.22+ located in `refs/py-tensorflow-sot`), transitioning to a modern **.NET 8.0 / .NET 9.0** high-performance runtime baseline while preserving backward compatibility for existing enterprise consumers.
+


samuelcaldas and others added 7 commits August 28, 2026 15:31

docs: add CLAUDE.md for codebase guidance and architecture

8522b6d

Co-Authored-By: Claude <noreply@anthropic.com>

docs: document py-tensorflow-sot SOT and symlink GEMINI.md, AGENTS.md

f216fc0

Co-Authored-By: Claude <noreply@anthropic.com>

docs: add SOT feature gap roadmap and version relationships to README…

5d7aab9

… and CLAUDE.md Co-Authored-By: Claude <noreply@anthropic.com>

docs: add engineering roadmap for next TensorFlow.NET release

80286f3

Co-Authored-By: Claude <noreply@anthropic.com>

docs: extract full engineering roadmap to ROADMAP.md and link references

c2efabd

Co-Authored-By: Claude <noreply@anthropic.com>

Copilot AI lite review requested due to automatic review settings September 3, 2026 18:57

samuelcaldas requested a review from Oceania2018 as a code owner September 3, 2026 18:57

Copilot started reviewing on behalf of samuelcaldas September 3, 2026 18:57 View session

Copilot AI reviewed Sep 3, 2026

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feat(deps): upgrade dependencies across TensorFlow.NET - #1303

feat(deps): upgrade dependencies across TensorFlow.NET#1303
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samuelcaldas commented Sep 3, 2026

Summary of Changes

1. Core Runtime Libraries (src/)

2. Test Suites (test/)

3. Developer Tools & Benchmarks (tools/)

Verification

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1. Core Runtime Libraries (`src/`)

2. Test Suites (`test/`)

3. Developer Tools & Benchmarks (`tools/`)