how to skip GDR and use bounce/temporary buffer

[alokprasad]

I want to test GPU <-> NIC Copy without GPUDirect ( i.e it should not use nvpeermem or dam-buf) , this is test
how much latency is increased without GPUDirect , but i dont see any option in perfest for this , if this feature is not there
how can i bypass dma-buf/peermem to have copy involved.

[alokprasad]

Basicallt it should use ibv_reg_mr but with GPU Memory and not ibv_reg_dmabuf_mr