RDMA Load Balancing via Data Partition

Yi, Wang; Jiang, Yanan; Ma, Qiufang; Tian, Chen; Bai, Bo; Zhang, Gong

doi:10.1109/icccn.2019.8847077

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…Studies in [22], [23] also have suggested user-level multipath schemes as pointing out such deployment difficulty of MP-RDMA. The basic concepts of these schemes are similar to UL-MPRDMA in the sense that a flow is divided into multiple chunks, and delivered over multiple QPs.…”

Section: A Remote Direct Memory Access (Rdma)mentioning

confidence: 99%

“…The differences among them are in how to handle Out Of Orders (OOO) delivery (which can occur with multi-path delivery) and memory depletion (which is caused by multiple QPs for dynamic multi-path utilization). In [22], an intermediate message buffer is used to reorder receiving chunks based on the sequence number given by the sender. In [23], they newly implemented two-sided operations with one-sided operations to avoid OOO delivery.…”

Section: A Remote Direct Memory Access (Rdma)mentioning

confidence: 99%

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Efficient User-Level Multi-Path Utilization in RDMA Networks

et al. 2021

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RDMA has become one of the most prominent networking technologies in DCNs by providing high bandwidth and ultra-low latency, especially for data-intensive applications. An important challenge with RDMA is to exploit multi-path for high throughput and reliability. Several studies have been proposed to utilize multi-path in RDMA networks, but they commonly require modification of RDMA NICs, which makes it hard to deploy them in practice. In this paper, we propose a user-level multi-path RDMA (UL-MPRDMA) scheme, in which a flow is partitioned into sub-flows, and transferred via multiple connections to make full use of multiple paths in DCNs. UL-MPRDMA quickly responds to sudden network trouble and congestion by performing dynamic sub-flow scheduling, and also effectively avoids the performance degradation problem due to the limited memory of RDMA NICs without the intervention of CPU. We implement UL-MPRDMA on a real test-bed with commercial RDMA NICs, and show that UL-MPRDMA can achieve 30% higher link utilization than an existing RDMA transport technique.

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Section: A Remote Direct Memory Access (Rdma)mentioning

confidence: 99%

Section: A Remote Direct Memory Access (Rdma)mentioning

confidence: 99%