On 03/11/2013 01:05 PM, Michael S. Tsirkin wrote:
Well that's exactly the question. As far as I remember the RDMA memory model, you need to know a key and address to execute RDMA writes. Remote memory also needs to be locked, so you need some mechanism to lock chunks of memory, do RDMA write and unlock when done.
Yes, memory is registered before the write occurs - that's is all taken care of in rdma.c (patch #04/10)
Same answer for the SEND messages: memory for each send must be registered before you send.
The pinning (mlock()) is already handled by libibverbs (by calling the function ibv_reg_mr()) - standard infiniband protocol initialization.
- Michael
