Network throughput: Difference between revisions

Revision as of 18:48, 6 April 2025

Revision as of 16:08, 6 May 2025

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A well-known application of asymptotic throughput is in modeling [[point-to-point communication]] where [[Network latency|message latency]] <math>T(N)</math> is modeled as a function of message length <math>N</math> as <math>T(N) = (M + N)/A</math> where <math>A</math> is the asymptotic bandwidth and <math>M</math> is the half-peak length.<ref>''Recent Advances in Parallel Virtual Machine and Message Passing Interface'' by Jack Dongarra, Emilio Luque and Tomas Margalef 1999 {{ISBN|3540665498}} page 134</ref>

As well as its use in general network modeling, asymptotic throughput is used in modeling performance on [[massively parallel]] computer systems, where system operation is highly dependent on communication overhead, as well as processor performance.<ref>M. Resch et al. ''A comparison of MPI performance on different MPPs''in Recent Advances in Parallel Virtual Machine and Message Passing Interface, Lecture Notes in Computer Science, 1997, Volume 1332/1997, 25-32</ref> In these applications, asymptotic throughput is used modeling which includes the number of processors, so that both the latency and the asymptotic throughput are functions of the number of processors.<ref>''High-Performance Computing and Networking'' edited by Angelo Mañas, Bernardo Tafalla and Rou Rey Jay Pallones 1998 {{ISBN|3540644431}} page 935</ref><!--[[User:Kvng/RTH]]-->

===Peak measured throughput===

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TheWhere aboveasymptotic valuesthroughput areis a theoretical or calculated. Peakcapacity, ''peak measured throughput'' is throughput measured byon a real, implemented system, or on a simulated system. The value is the throughput measured over a short period of time; mathematically, this is the limit taken with respect to throughput as time approaches zero. This term is synonymous with ''instantaneous throughput''. This number is useful for systems that rely on burst data transmission; however, for systems with a high [[duty cycle]], this is less likely to be a useful measure of system performance.<!--[[User:Kvng/RTH]]-->

===Maximum sustained throughput===