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Optimize managed FastTree Sumup to native parity on arm64 - #7670

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matouskozak merged 8 commits into
dotnet:mainfrom
vladimir-aubrecht:feature/fasttree-managed-sumup-arm64
Aug 25, 2026
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Optimize managed FastTree Sumup to native parity on arm64#7670
matouskozak merged 8 commits into
dotnet:mainfrom
vladimir-aubrecht:feature/fasttree-managed-sumup-arm64

Add segment corner-case/multi-segment and arch-dispatch Sumup tests

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MachineLearning-CI / MacOS_cross_arm64 / MacOS_cross_arm64 Release_Build / Run Helix Tests

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    ❌Bash exited with code '1'.

Non-Deterministic Test Failures Detected

❌ Microsoft.ML.Tests.TrainerEstimators.TrainerEstimators.SdcaLogisticRegression [Console] [Details] [Artifacts] [2.16% failure rate]
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Failing Configuration
Exception Message
Assert.InRange() Failure: Value not in range
Range:  (0 - 0.5)
Actual: 0.54187588531648412
CallStack
   at Microsoft.ML.Tests.TrainerEstimators.TrainerEstimators.SdcaLogisticRegression() in /Users/runner/work/1/s/test/Microsoft.ML.Tests/TrainerEstimators/SdcaTests.cs:line 86
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)

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