From RDMA to RDCA: Toward High-Speed Last Mile of Data Center Networks Using Remote Direct Cache Access Article Swipe

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Qiang Li , Qiao Xiang , Derui Liu , Yuxin Wang , Haonan Qiu , Gexiao Tian , Xiaoliang Wang , Lulu Chen , Ridi Wen , Jianbo Dong , Yuanyuan Gong , Yixiao Gao , Haohao Song , Zhiwu Wu , Shaozong Liu , Zicheng Luo , Yuchao Shao , Yaohui Wu , Chao Han , Tian Chen , Zhongjie Wu , Zheng Cao , Jinbo Wu , Jiwu Shu , Jiesheng Wu ·

YOU? · · 2022 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2211.05975

In this paper, we conduct systematic measurement studies to show that the high memory bandwidth consumption of modern distributed applications can lead to a significant drop of network throughput and a large increase of tail latency in high-speed RDMA networks.We identify its root cause as the high contention of memory bandwidth between application processes and network processes. This contention leads to frequent packet drops at the NIC of receiving hosts, which triggers the congestion control mechanism of the network and eventually results in network performance degradation. To tackle this problem, we make a key observation that given the distributed storage service, the vast majority of data it receives from the network will be eventually written to high-speed storage media (e.g., SSD) by CPU. As such, we propose to bypass host memory when processing received data to completely circumvent this performance bottleneck. In particular, we design Lamda, a novel receiver cache processing system that consumes a small amount of CPU cache to process received data from the network at line rate. We implement a prototype of Lamda and evaluate its performance extensively in a Clos-based testbed. Results show that for distributed storage applications, Lamda improves network throughput by 4.7% with zero memory bandwidth consumption on storage nodes, and improves network throughput by up 17% and 45% for large block size and small size under the memory bandwidth pressure, respectively. Lamda can also be applied to latency-sensitive HPC applications, which reduces their communication latency by 35.1%.

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Remote direct memory access Computer science Computer network Bottleneck Throughput Cache Latency (audio) Network packet Operating system Embedded system Wireless Telecommunications

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2211.05975
PDF: https://arxiv.org/pdf/2211.05975
OA Status: green
Related Works: 10
OpenAlex ID: https://openalex.org/W4309044644

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DOI: https://doi.org/10.48550/arxiv.2211.05975

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Title: From RDMA to RDCA: Toward High-Speed Last Mile of Data Center Networks Using Remote Direct Cache Access

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Type: preprint

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Language: en

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Publication year: 2022

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Publication date: 2022-11-11

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Authors: Qiang Li, Qiao Xiang, Derui Liu, Yuxin Wang, Haonan Qiu, Gexiao Tian, Xiaoliang Wang, Lulu Chen, Ridi Wen, Jianbo Dong, Yuanyuan Gong, Yixiao Gao, Haohao Song, Zhiwu Wu, Shaozong Liu, Zicheng Luo, Yuchao Shao, Yaohui Wu, Chao Han, Tian Chen, Zhongjie Wu, Zheng Cao, Jinbo Wu, Jiwu Shu, Jiesheng Wu

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Landing page: https://arxiv.org/abs/2211.05975

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PDF URL: https://arxiv.org/pdf/2211.05975

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OA status: green

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OA URL: https://arxiv.org/pdf/2211.05975

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Concepts: Remote direct memory access, Computer science, Computer network, Bottleneck, Throughput, Cache, Latency (audio), Network packet, Operating system, Embedded system, Wireless, Telecommunications

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Cited by: 0

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abstract_inverted_index.to	8, 22, 60, 115, 127, 135, 160, 233
abstract_inverted_index.up	211
abstract_inverted_index.we	3, 90, 125, 143
abstract_inverted_index.17%	212
abstract_inverted_index.45%	214
abstract_inverted_index.CPU	158
abstract_inverted_index.HPC	235
abstract_inverted_index.NIC	66
abstract_inverted_index.and	29, 54, 79, 176, 206, 213, 219
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abstract_inverted_index.for	188, 215
abstract_inverted_index.its	41, 178
abstract_inverted_index.key	93
abstract_inverted_index.the	11, 45, 65, 72, 77, 97, 101, 109, 165, 223
abstract_inverted_index.4.7%	197
abstract_inverted_index.CPU.	122
abstract_inverted_index.RDMA	38
abstract_inverted_index.SSD)	120
abstract_inverted_index.This	57
abstract_inverted_index.also	230
abstract_inverted_index.data	105, 134, 163
abstract_inverted_index.drop	25
abstract_inverted_index.from	108, 164
abstract_inverted_index.high	12, 46
abstract_inverted_index.host	129
abstract_inverted_index.lead	21
abstract_inverted_index.line	168
abstract_inverted_index.make	91
abstract_inverted_index.root	42
abstract_inverted_index.show	9, 186
abstract_inverted_index.size	218, 221
abstract_inverted_index.tail	34
abstract_inverted_index.that	10, 95, 152, 187
abstract_inverted_index.this	1, 88, 138
abstract_inverted_index.vast	102
abstract_inverted_index.when	131
abstract_inverted_index.will	111
abstract_inverted_index.with	198
abstract_inverted_index.zero	199
abstract_inverted_index.Lamda	175, 192, 228
abstract_inverted_index.block	217
abstract_inverted_index.cache	149, 159
abstract_inverted_index.cause	43
abstract_inverted_index.drops	63
abstract_inverted_index.given	96
abstract_inverted_index.large	31, 216
abstract_inverted_index.leads	59
abstract_inverted_index.media	118
abstract_inverted_index.novel	147
abstract_inverted_index.rate.	169
abstract_inverted_index.small	155, 220
abstract_inverted_index.such,	124
abstract_inverted_index.their	239
abstract_inverted_index.under	222
abstract_inverted_index.which	70, 237
abstract_inverted_index.(e.g.,	119
abstract_inverted_index.35.1%.	243
abstract_inverted_index.Lamda,	145
abstract_inverted_index.amount	156
abstract_inverted_index.bypass	128
abstract_inverted_index.design	144
abstract_inverted_index.hosts,	69
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abstract_inverted_index.modern	17
abstract_inverted_index.nodes,	205
abstract_inverted_index.packet	62
abstract_inverted_index.paper,	2
abstract_inverted_index.system	151
abstract_inverted_index.tackle	87
abstract_inverted_index.Results	185
abstract_inverted_index.applied	232
abstract_inverted_index.between	51
abstract_inverted_index.conduct	4
abstract_inverted_index.control	74
abstract_inverted_index.latency	35, 241
abstract_inverted_index.network	27, 55, 78, 83, 110, 166, 194, 208
abstract_inverted_index.process	161
abstract_inverted_index.propose	126
abstract_inverted_index.reduces	238
abstract_inverted_index.results	81
abstract_inverted_index.storage	99, 117, 190, 204
abstract_inverted_index.studies	7
abstract_inverted_index.written	114
abstract_inverted_index.consumes	153
abstract_inverted_index.evaluate	177
abstract_inverted_index.frequent	61
abstract_inverted_index.identify	40
abstract_inverted_index.improves	193, 207
abstract_inverted_index.increase	32
abstract_inverted_index.majority	103
abstract_inverted_index.problem,	89
abstract_inverted_index.received	133, 162
abstract_inverted_index.receiver	148
abstract_inverted_index.receives	107
abstract_inverted_index.service,	100
abstract_inverted_index.testbed.	184
abstract_inverted_index.triggers	71
abstract_inverted_index.bandwidth	14, 50, 201, 225
abstract_inverted_index.implement	171
abstract_inverted_index.mechanism	75
abstract_inverted_index.pressure,	226
abstract_inverted_index.processes	53
abstract_inverted_index.prototype	173
abstract_inverted_index.receiving	68
abstract_inverted_index.Clos-based	183
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abstract_inverted_index.completely	136
abstract_inverted_index.congestion	73
abstract_inverted_index.contention	47, 58
abstract_inverted_index.eventually	80, 113
abstract_inverted_index.high-speed	37, 116
abstract_inverted_index.processes.	56
abstract_inverted_index.processing	132, 150
abstract_inverted_index.systematic	5
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abstract_inverted_index.bottleneck.	140
abstract_inverted_index.consumption	15, 202
abstract_inverted_index.distributed	18, 98, 189
abstract_inverted_index.extensively	180
abstract_inverted_index.measurement	6
abstract_inverted_index.networks.We	39
abstract_inverted_index.observation	94
abstract_inverted_index.particular,	142
abstract_inverted_index.performance	84, 139, 179
abstract_inverted_index.significant	24
abstract_inverted_index.applications	19
abstract_inverted_index.degradation.	85
abstract_inverted_index.applications,	191, 236
abstract_inverted_index.communication	240
abstract_inverted_index.respectively.	227
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cited_by_percentile_year
countries_distinct_count	0
institutions_distinct_count	25
sustainable_development_goals[0].id	https://metadata.un.org/sdg/7
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citation_normalized_percentile