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Unable to use Tensors in Jupyter notebook due to loading errors

See original GitHub issue

Describe the bug

I’m currently trying to use the Jupyter kernel with ML.NET and the OnnxRuntime to prototype model inference based on pre-computed onnx models. However I am unable to use System.Numerics.Tensors to create inputs to the model:

(EDIT - updated to minimal repro)

#r "nuget:Microsoft.ML.OnnxRuntime,1.1.0"

using System.Numerics.Tensors;
var inputValues = new[]{12f, 10f, 17f, 5f};
var tInput = new DenseTensor<float>(inputValues.AsMemory(), new ReadOnlySpan<int>(new[]{4}));

errors with:

Unhandled Exception
Could not load file or assembly 'System.Numerics.Tensors, Version=0.1.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. Reference assemblies should not be loaded for execution.  They can only be loaded in the Reflection-only loader context. (0x80131058)
   at Submission#23.<<Initialize>>d__0.MoveNext()
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Submission#23.<Initialize>()
   at Submission#23.<Factory>(Object[] submissionArray)
   at Microsoft.CodeAnalysis.Scripting.ScriptExecutionState.RunSubmissionsAsync[TResult](ImmutableArray`1 precedingExecutors, Func`2 currentExecutor, StrongBox`1 exceptionHolderOpt, Func`2 catchExceptionOpt, CancellationToken cancellationToken)

This apperently tries to load a reference assembly into the runtime. /cc @eerhardt

Did this error occur while using `dotnet try` or online?

dotnet-try
.NET Jupyter Notebook
online

What kind of error was it?

User Interface (UI): For example the output never displayed
Service Error: For example “The service is temporarily unavailable. We are working on it”
Other:

Screenshots

Please complete the following:

OS
- Windows 10
- macOS
- Linux (Please specify distro)
- iOS
- Android
Browser
- Chrome
- Edge (Dev Channel)
- Safari

Issue Analytics

State:
Created 4 years ago
Comments:12 (9 by maintainers)

Top GitHub Comments

1reaction

KevinRansomcommented, Jan 22, 2020

@dasMulli , hey mate, I’m using this issue to track the code-change. So I would like to keep this open for now, if that is good with you 😃

1reaction

jonsequiturcommented, Jan 13, 2020

There’ll be a more general announcement soon.

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