MKL.NET.Matrix Nuget package in docker container

[womackra]

Encountering errors with matrix multiplication using MKL.NET.Matrix Nuget package in a docker container

Dockerfile =======================

FROM mcr.microsoft.com/dotnet/sdk:6.0-windowsservercore-ltsc2022

WORKDIR c:/test/

COPY test.csproj test.csproj

COPY test.cs test.cs

RUN dotnet build

RUN dotnet test

test.csproj file: =======================

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>

    <TargetFrameworks>net6.0</TargetFrameworks>

  </PropertyGroup>

  <ItemGroup>

    <PackageReference Include="MKL.NET.Matrix" Version="1.1.1"/>

    <PackageReference Include="MKL.NET.win-x64" Version="2022.0.0.115" />

    <PackageReference Include="MSTest" Version="3.6.2"/>

  </ItemGroup>  

</Project>

test.cs file: =======================

using System;

using System.Reflection;

using System.Runtime.InteropServices;

using Microsoft.VisualStudio.TestTools.UnitTesting;

[TestClass]

public class matrix_test {

    [TestMethod]

    public void matrix_multiply_test(){

        MKLNET.matrix matrixA = new MKLNET.matrix(6, 6);

        for (int i = 0; i < matrixA.Cols; ++i) {

            for (int j = 0; j < matrixA.Rows; ++j) {

                    matrixA[i, j] = (i + 1) * (j + 1);

            }

        }

        try { MKLNET.matrix result = matrixA * matrixA;

        } catch (ExternalException e) {

            Console.WriteLine(e.ErrorCode);

            Console.WriteLine(e.Source);

            Assert.Fail();

        }

        Assert.IsTrue(true);

    }

}

output (when catching the exception): =======================

A total of 1 test files matched the specified pattern.
Failed matrix_multiply_test [106 ms]
Error Message:
Assert.Fail failed.
Stack Trace:
at matrix_test.matrix_multiply_test() in C:\test\test.cs:line 20

Standard Output Messages:
-2147467259 (translates to 0x80004005, an Unspecified Error)
MKL.NET

output (not catching the exception) =======================

System.Runtime.InteropServices.SEHException: External component has thrown an exception.
Stack Trace:
at MKLNET.Blas.Unsafe.gemm(Layout Layout, Trans TransA, Trans TransB, Int32 M, Int32 N, Int32 K, Double alpha, Double* A, Int32 lda, Double* B, Int32 ldb, Double beta, Double* C, Int32 ldc)
at MKLNET.Expression.MatrixMultiply.Evaluate()
at MKLNET.Expression.MatrixExpression.op_Implicit(MatrixExpression a)
at matrix_test.matrix_multiply_test() in C:\test\test.cs:line 16

Some scenarios where this error doesn't exist (that could help isolate the issue):

1. when using mcr.microsoft.com/dotnet/sdk:6.0-jammy image, indicating that the external failure is due to something specific to the windows image. To run in a linux container, I change the runtime package to MKL.NET.linux-x64 and change dockerfile test path to /test/

2. executing the unit test outside of a docker image, indicating some expected component from windows is missing in the docker image

Insight on why this error could be happening or how to get more information out of the external failure would be greatly helpful. Thanks

[Aleksandra_K]

Hello,

After reproducing your case, I think that the is an issue related to dynamic libraries in the Docker environment. You can try to use tools like Understanding the Dependencies of a Visual C++ Application | Microsoft Learn to check this.

Best regards,

Aleksandra

[Aleksandra_K]

Hello, 

Did you get a chance to try the instructions I sent earlier?

Best regards,

Aleksandra