OrtApi Globals in C#

[thoron]

Hi everyone,

I am missing some of the C/java bindings in C#. Specifically SpinLock control and global threading options.
They already exist in the OrtApi struct in the wrapper:

onnxruntime/csharp/src/Microsoft.ML.OnnxRuntime/NativeMethods.shared.cs

Line 183 in a83a9ed

public IntPtr SetGlobalSpinControl;

Could it be considered adding them to the OrtEnv class?
Similar to the java implementation:

onnxruntime/java/src/main/java/ai/onnxruntime/OrtEnvironment.java

Line 430 in 0757d51

public void setGlobalSpinControl(boolean allowSpinning) throws OrtException {

I suggest exposing the threading options same as for java:

    OrtEnvironment.ThreadingOptions threadOpts = new OrtEnvironment.ThreadingOptions();
    threadOpts.setGlobalInterOpNumThreads(2);
    threadOpts.setGlobalIntraOpNumThreads(2);
    threadOpts.setGlobalDenormalAsZero();
    threadOpts.setGlobalSpinControl(true);

(from https://github.com/microsoft/onnxruntime/blob/main/java/src/test/java/ai/onnxruntime/EnvironmentThreadPoolTest.java)

Or expanding the OrtEnv with additional methods:

        public void SetGlobalSpinControl(bool allowSpin)
        {
            NativeApiStatus.VerifySuccess(NativeMethods.OrtSetGlobalSpinControl(Handle, allowSpin));
        }

Using it as:

OrtEnv.Instance().SetGlobalInterOpNumThreads(2);
OrtEnv.Instance().SetGlobalIntraOpNumThreads(2);
OrtEnv.Instance().SetGlobalSpinControl(true);

Best regards,
Thomas

[yuslepukhin]

Cc: @RandySheriffH

[thoron]

Discussion moved to issue #13743 and fixed in PR #13822