Build Kernels concurrently using the same KernelBuilder #5372

Closed Answered by matthewbolanos

songpeidu asked this question in Q&A

songpeidu
Mar 7, 2024

It looks like IKernelBuilder.Build is not thread safe, is this by design?

Answered by matthewbolanos

Yes, this by design. You ideally shouldn't be using a builder to create multiple Kernels. Ideally, you would either...

Create a kernel once and then clone it.
Add a transient kernel to the service provider so that it's always recreated.

For the latter, I'd refer to the Dependency Injection sample: https://github.com/microsoft/semantic-kernel/tree/main/dotnet/samples/HomeAutomation

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Replies: 2 comments

songpeidu
Mar 7, 2024
Author

Saw the comments regarding GetKeyedServices, so after that's fixed, it should be thread safe right?

0 replies

matthewbolanos
Apr 1, 2024

Yes, this by design. You ideally shouldn't be using a builder to create multiple Kernels. Ideally, you would either...

Create a kernel once and then clone it.
Add a transient kernel to the service provider so that it's always recreated.

For the latter, I'd refer to the Dependency Injection sample: https://github.com/microsoft/semantic-kernel/tree/main/dotnet/samples/HomeAutomation

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Answer selected by matthewbolanos

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