Performance Evaluation of RDMA over IP: A Case Study with the Ammasso Gigabit Ethernet NIC (2005)
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| Venue: | In Workshop on High Performance Interconnects for Distributed Computing (HPI-DC); In conjunction with HPDC-14 |
| Citations: | 6 - 2 self |
BibTeX
@INPROCEEDINGS{Dhabaleswar05performanceevaluation,
author = {Dhabaleswar and K. Panda and Hyun-wook Jin and Hyun-wook Jin and Sundeep Narravula and Sundeep Narravula and Gregory Brown and Gregory Brown and Karthikeyan Vaidyanathan and Karthikeyan Vaidyanathan and Pavan Balaji and Pavan Balaji and Dhabaleswar K. Panda},
title = {Performance Evaluation of RDMA over IP: A Case Study with the Ammasso Gigabit Ethernet NIC},
booktitle = {In Workshop on High Performance Interconnects for Distributed Computing (HPI-DC); In conjunction with HPDC-14},
year = {2005}
}
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Abstract
Remote Direct Memory Access (RDMA) has been proposed to overcome the limitations of traditional send/receive based communication protocols. The immense potential of RDMA to improve the communication performance while being extremely conservative on resource requirements have made RDMA the most sought after feature in current and next generation networks. Recently, there are many active efforts to enable RDMA over IP and the fabrication of RDMA-enabled Ethernet NICs has just been started. However, its performance has not been quantitatively evaluated over WAN environments while existing researches have been focused on LAN environments. In this paper, we evaluate the performance of RDMA over IP networks with Ammasso Gigabit Ethernet NIC while emulating high delay WANs and varying load on remote node. We observe that RDMA is beneficial especially under heavy load conditions. More importantly, even with a high delay, RDMA can provide better communication progress and requires less CPU resource as compared to the traditional sockets over TCP/IP. Further we show that RDMA can support high performance intra-cluster communications providing unified communication interface for inter- and intra-cluster communication. To the best of our knowledge, this is the first quantitative study of RDMA over IP on a WAN setup.
