> > How do you indicate that the sge list has 0 length? > > Are you posting an ibv_send_wr? What value do you set the sg_list > field to? > i post a SR using the ibv_send_wr. in the struct ibv_send_wr: num_sge <-- 0 i don't put any value in sg_list because no one should check this value ... Dotan