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PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN
VERSION:2.0
BEGIN:VEVENT
DTSTART:20151118T163000Z
DTEND:20151118T170000Z
LOCATION:18CD
DESCRIPTION;ENCODING=QUOTED-PRINTABLE:ABSTRACT: Endpoint congestion in HPC networks creates tree saturation that is detrimental to performance.=0AEndpoint congestion can be alleviated by reducing the injection rate of traffic sources, but requires fast reaction time to avoid congestion buildup. =0ACongestion control becomes more challenging as application communication shift from traditional two-sided model to potentially fine-grained, one-sided communication embodied by various global address space programming models. =0AExisting hardware solutions, such as Explicit Congestion Notification (ECN) and Speculative Reservation Protocol (SRP), either react too slowly or incur too much overhead for small messages.=0A=0AIn this study we present two new endpoint congestion-control protocols, Small-Message SRP (SMSRP) and Last-Hop Reservation Protocol (LHRP), both targeted specifically for small messages. =0AExperiments show they can quickly respond to endpoint congestion and prevent tree saturation in the network. =0AUnder congestion-free traffic conditions, the new protocols generate minimal overhead with performance comparable to networks with no endpoint congestion control.
SUMMARY:Network Endpoint Congestion Control for Fine-Grained Communication
PRIORITY:3
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