How to use the UCX with RCCL and rccl-rdma-sharp-plugins?

[shanleo2024]

Hi, I just try to use the UCX with RCCL and rccl-rdma-sharp-plugins, but unfortunately they cannot work, as there always an error like that:
ucp_mm.c:855 Assertion `memh->md_map != 0' failed

And I noticed that the function nccl_ucx_regmr in rccl-rdma-sharp-plugins, only input those params:
mmap_params.field_mask = UCP_MEM_MAP_PARAM_FIELD_ADDRESS |
UCP_MEM_MAP_PARAM_FIELD_LENGTH;
mmap_params.address = (void*)reg_addr;
mmap_params.length = reg_size;
mh->mem_type = (type == NCCL_PTR_HOST)? UCS_MEMORY_TYPE_HOST: UCS_MEMORY_TYPE_CUDA;
mmap_params.field_mask |= UCP_MEM_MAP_PARAM_FIELD_MEMORY_TYPE;
mmap_params.memory_type = mh->mem_type;

And then calll the ucp_mem_map, as there is no flag to input, the ucp_mem_map will report this error.
So could someone who is so kind can help me to anslysis how to use the API correctlly?
Thanks a lot!