i ran a: ompi_info --param btl tcp
and i see reference to:
MCA btl: parameter "btl_tcp_min_rdma_size" (current value: "131072")
MCA btl: parameter "btl_tcp_max_rdma_size" (current value: "2147483647")
Can TCP support RDMA? I thought you needed fancy hardware to get
such support? Light on this subject is highly appreciated.
Also if a user using ethernet, is trying to up the limit for
'greedy' messages that the btl_tcp_eager_limit? Is there a problem
increasing its size? We will test it with his app of-course, but
was wondering if there was a 'gotcha' I was going to walk into.
Center for Advanced Computing