RE: Maximum size for memory registration (ibv_reg_mr)

[Bharath Ramesh]

> -----Original Message-----
> From: Roland Dreier [mailto:rdre...@cisco.com]
> 
>  > Is there any limit on the maximum size of memory that can be
> registered
>  > using ibv_reg_mr. I am using OFED-1.4.2 stack, and when I try to
> pass a size
>  > greater than 16GB ibv_reg_mr returns NULL. The total amount of
> physical
>  > memory on the node is 48GB, max locked memory(ulimit -l) is set to
>  > unlimited.
> 
> The limit depends on the HCA.

max_mr_size returned by calling ibv_devinfo is 0xffffffffffffffff. Does this
mean the size is unlimited?

Regards,

Bharath

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