> --> I register a single larger memory region with rdma_reg_msgs.
> What are parameters in rdma_post_recv function to use these "big" memory
> regions few times? In other words, on that MR can I write/read different
> smaller messages?
Just adjust the addr and length parameters. For example:
buffer = calloc(MSG_COUNT, MSG_SIZE);
mr = rdma_reg_msgs(id, buffer, MSG_SIZE * MSG_COUNT);
for (offset = 0; offset < MSG_SIZE * MSG_COUNT; offset += MSG_SIZE)
rdma_post_recv(id, context, buffer + offset, MSG_SIZE, mr);
Note that rdma_reg_msgs only supports send/receive messages. You'll need to
use rdma_reg_read or rdma_reg_write to mark a buffer for RDMA read or write
operations, respectively. Or, use ibv_reg_mr to support reads and writes.
- Sean
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