sponsored byACMIEEE The International Conference for High Performance 
Computing, Networking, Storage and Analysis
FacebookTwitterGoogle PlusLinkedInYouTubeFlickr

SCHEDULE: NOV 15-20, 2015

When viewing the Technical Program schedule, on the far righthand side is a column labeled "PLANNER." Use this planner to build your own schedule. Once you select an event and want to add it to your personal schedule, just click on the calendar icon of your choice (outlook calendar, ical calendar or google calendar) and that event will be stored there. As you select events in this manner, you will have your own schedule to guide you through the week.

Network Endpoint Congestion Control for Fine-Grained Communication

SESSION: Interconnection Networks

EVENT TYPE: Papers

EVENT TAG(S): Architectures, Networks

TIME: 10:30AM - 11:00AM

SESSION CHAIR(S): Ilya Baldin

AUTHOR(S):Nan Jiang, Larry Dennison, William J. Dally

ROOM:18CD

ABSTRACT:

Endpoint congestion in HPC networks creates tree saturation that is detrimental to performance.
Endpoint congestion can be alleviated by reducing the injection rate of traffic sources, but requires fast reaction time to avoid congestion buildup.
Congestion 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.
Existing 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.

In 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.
Experiments show they can quickly respond to endpoint congestion and prevent tree saturation in the network.
Under congestion-free traffic conditions, the new protocols generate minimal overhead with performance comparable to networks with no endpoint congestion control.

Chair/Author Details:

Ilya Baldin (Chair) - RENCI|

Nan Jiang - NVIDIA Corporation

Larry Dennison - NVIDIA Corporation

William J. Dally - NVIDIA Corporation

Add to iCal  Click here to download .ics calendar file

Add to Outlook  Click here to download .vcs calendar file

Add to Google Calendarss  Click here to add event to your Google Calendar


Paper provided by the ACM Digital Library

Paper also available from IEEE Computer Society