[Feature] How to register Memory Region on specific memory address?

[fishiu]

The API to create MR, i.e. alloc_local_mr(layout) function, only has the option to allocate new memory in an ad-hoc way (use malloc inside the alloc_local_mr function).

Is it possible that I register an existing memory block as MR. As I want to transfer a large block of memory and don't want it to be copied which may cause performance issue. Many thanks in advance!

[GTwhy]

Hi @fishiu . This seems to be a useful feature, and currently we do not provide the corresponding interface. In such a scenario, we cannot guarantee the safety of pre-allocated memory, so we may provide some unsafe interfaces and manage this memory separately.