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I have a similar problem where I need to assign GPU buffer to completion queue in ibv_create_cq. However, it gives me bad address error with GPU address but succeeds with CPU address. Can you please explain how you solved the issue you mentioned?
I have a similar problem where I need to assign GPU buffer to completion queue in ibv_create_cq. However, it gives me bad address error with GPU address but succeeds with CPU address. Can you please explain how you solved the issue you mentioned?
Many thanks
Any update? when I use ib_read interface from GPU address, it hangs. But CPU address, it works.
evn:
ib_write_bw is sucessed:
nccl topo:
![nccl topo](https://private-user-images.githubusercontent.com/10544309/261174318-d0d07112-bc1d-40a2-abb8-dfa9528a26bd.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.zmg-skYzR5mC9A6-akZVXqaIKpyUsi967hvkULYiIC4)
error message:
This error is happened on mellox cx7
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