Azure / Azure/msccl

The number of channels causes an error.

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Description

Sir, I have encountered another issue. For the same algorithm (the ring algorithm provided by msccl-tool), when I specify the number of channels as 1 or 2, the generated XML works fine.
![Image](https://github.com/user-attachments/assets/15cd6698-005c-4947-9da3-4123d0282d40)

However, when I set the number of channels to 4, running the mpirun command results in an error. I also tested other algorithms, and they only run successfully when the number of channels is set to 1 or 2. Why is this happening?
![Image](https://github.com/user-attachments/assets/cb95107a-d61d-4d41-9f42-2c6ed7a5e55d)

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