并行计算机性能测评 历粤毛子种枝大” XIDIAN UNIVERSITY for i=0 to Runs-1 do 关键字 注释 if (my node_id =0)then 发送者*/ start time =second() send an m-byte message to node 1 receive an m-byte message from node 1 end time second() total time end time-start time communication time[i]total time/2 else if(my_node_id=1)then/*接收者*/ receive an m-byte message from node 0 send an m-byte message to node 0 endif endfor 25 并行计算机性能测评 for i=0 to Runs‐1 do if （my _node _id =0） then /*发送者*/ start _time =second() send an m-byte message to node 1 receive an m-byte message from node 1 end_time = second() total_time = end_time – start_time communication_time[i] = total_time/2 else if （my_node_id = 1） then /*接收者*/ receive an m-byte message from node 0 send an m-byte message to node 0 endif endfor 关键字 注释 25