Hi: Recently, I am confused with how does the hama graph model work.when I submit a hama graph job, is there a partition job starting first? And How dose the class GraphJobRunner is created when the actuall graph job begins??
2014-08-21 18:44 GMT+08:00 Edward J. Yoon <[email protected]>: > Oh.. it seems you misunderstood. The meaning of superstep is equal to > the meaning of iteration. > > I was mean that the count of ITERATIONS is not equal to the count of > SUPERSTEPS. The additional supersteps is used for vertices' value > initialization and master aggregation. > > .. > 14/08/21 19:34:24 INFO bsp.BSPJobClient: Counters: 12 > 14/08/21 19:34:24 INFO bsp.BSPJobClient: GraphJobCounter > 14/08/21 19:34:24 INFO bsp.BSPJobClient: ITERATIONS=30 > 14/08/21 19:34:24 INFO bsp.BSPJobClient: INPUT_VERTICES=400 > 14/08/21 19:34:24 INFO bsp.BSPJobClient: JobCounter > 14/08/21 19:34:24 INFO bsp.BSPJobClient: SUPERSTEPS=60 > 14/08/21 19:34:24 INFO bsp.BSPJobClient: LAUNCHED_TASKS=3 > .. > > On Wed, Aug 20, 2014 at 11:40 PM, 张沛然 <[email protected]> wrote: > > Hello: > > I get confused about hama graph ,take the SSSP as example: > > input :4 vertexs and4 edges > > 1\t2:2\t3:3 > > 2\t4:4 > > 3\t4:1 > > 4 > > > > I guess it will process like below: > > superstep 0:vertex1,2,3,4 do computer() > > that's :vertex1 sent message of value 2 to vertex2 > > vertex1 sent message of value 3 to vertes3 > > vertex1,2,3,4 voteToHalt() and get > inactive; > > superstep 1:only vertex 2,3 o compute() > > that's vertex 2,3 received message and update value > > vertex 2 sent message of value 6 to vertex4 > > vertex 3 sent message of value 4 to vertex4 > > vertex 2,3 voteToHalt() > > superstep 2 :only vertex 4 do computer() > > that's vertex4 received message and update value > > then ,all the vertexs is inactive ,the processing is over! I run it in > > pseudo-distributed modes . > > 1)Is it right??? > > 2)I think all the processing just need 1 iteration,but when I set the > > maxIteration to 1,the result is not right!! It show that the vertex4 has > > not update its value, I wonder know why their is no supertetp2 and when a > > iteration is over??? > > Thanks a lot.I just get mad...... > > > > -- > Best Regards, Edward J. Yoon > CEO at DataSayer Co., Ltd. >
