Communication Optimization Technology Based on Network Dynamic Performance Model

Table 1

All-to-all communication optimization test results of the Sunway TaihuLight system.

Number of nodes	512			1024
Message size	Before optimization	After optimization	Speed-up ratio	Before optimization	After optimization	Speed-up ratio
1 k	0.123503	0.124768	0.989861	0.304584	0.297603	1.023457
2 k	0.165302	0.158945	1.039995	0.452202	0.45197	1.000513
4 k	0.176427	0.174712	1.009816	0.438695	0.421362	1.041136
8 k	0.166236	0.162356	1.023898	0.425682	0.419812	1.013982
16 k	0.179189	0.163515	1.095857	0.438668	0.382685	1.14629
32 k	0.197772	0.181229	1.091282	0.502881	0.414985	1.211805
64 k	0.465669	0.44584	1.044476	0.730972	0.631371	1.157754
128 k	0.492282	0.482712	1.019825	1.457561	1.301542	1.119872
256 k	0.808534	0.777597	1.039785	2.295667	2.181182	1.052488
512 k	1.648359	1.501278	1.097971	4.616991	4.168189	1.107673
1 m	3.168055	2.958922	1.070679	9.865502	8.007522	1.232029
2 m	6.457053	6.02656	1.071433	—	—	—