Error Message importing TorchSharp

vvvv gamma question
1

Hello

I ran a quick test, trying to import the PyTorch wrapper library TorchSharp, but I’m getting a complicated error message trying to use it.

How to reproduce:
Open vvvv Gamma 2020.2.0
Manage Nugets → Command Line → nuget install TorchSharp -Version 0.3.52363
Dependencies → .NET Nugets → activate TorchSharp Nuget

now create some node, eg TorchSharp → Tensor → BoolTensor → Zeros

on creating the node and on hovering any of its pins I get the error message:

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ArgumentNullException: Value cannot be null.
Parameter name: enumType
   at System.Enum.ToObject(Type enumType, Int32 value)
   at VL.Lang.Platforms.Roslyn.ImportedParameterPinDefinitionSymbol.GetDefaultValue()
   at VL.Lang.Platforms.Roslyn.ImportedParameterPinDefinitionSymbol.get_DefaultValue()
   at VL.Lang.Symbols.ScopedPinDefintionSymbol.get_DefaultValue()
   at VL.Lang.Symbols.PatchedNodePinSymbol.get_Value()
   at VL.Lang.Symbols.PatchedNodePinSymbol.<get_Messages>d__63.MoveNext()
   at VL.Lang.Symbols.PatchAndDataflowHelpers.<CollectMessages>d__8.MoveNext()
   at VL.Lang.Symbols.PatchAndDataflowHelpers.<CollectMessages>d__8.MoveNext()
   at VL.Lang.Symbols.PatchAndDataflowHelpers.<CollectMessages>d__8.MoveNext()
   at System.Linq.Enumerable.<ConcatIterator>d__59`1.MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at VL.Lang.Symbols.ConcreteTypeSymbol.<.ctor>b__18_2()
   at VL.Lang.Symbols.SafeLazy`1.CreateValue()
   at VL.Lang.Symbols.ConcreteTypeSymbol.ComputeMessages()
   at VL.Lang.Symbols.PatchedConcreteTypeSymbol.ComputeMessages()
   at VL.Lang.Symbols.SafeLazy`1.CreateValue()
   at VL.Lang.Symbols.ConcreteTypeSymbol.get_Messages()
   at System.Linq.Enumerable.<SelectManyIterator>d__17`2.MoveNext()
   at System.Linq.Enumerable.<ConcatIterator>d__59`1.MoveNext()
   at System.Linq.Lookup`2.Create[TSource](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer)
   at VL.Model.ModelExtensions.GetSymbolMessageLookup(Canvas canvas, PreCompilation compilation)
   at VL.Model.InterlockedHelper.CacheNoLock[T](T& location, Func`1 query)
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at VL.Lang.View.CanvasView.<CheckCompileTimeErrors>d__130.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at VL.Lang.View.CanvasView.<CheckSymbolsAsync>d__128.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

Maybe this helps you find some bug. Maybe the bug isn’t yours. Hope this helps.

1 Like
2

Hey Dominik, thanks for the report.

The culprit seems to be the package only delivering an assembly for netcore3.1 while we’re currently still running on net472. So I fear this package will only start working once we moved to net5 (the successor of netcore3.1 and net4).

3

We should talk :-)

4

right thanks @elias!
If there’s any possibility for you to let users know when they import a nuget that’s not going to work that could be helpful.

@hadasi sure let’s!

5

@dominikKoller are you on Element/Riot?

6

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