Responding to the “datacenter tax” and “killer microseconds” problems for memory-intensive datacenter applications, diverse solutions including Smart NIC-based ones have been proposed. Nonetheless, they often suffer from high overhead of communications over network and\/or PCIe links. To tackle the limitations of the current solutions, this paper proposes RAMBDA, RDMA-driven acceleration framework for Boosting performance of memory-intensive us-scale datacenter applications. this paper proposes RAMBDA, a holistic network and architecture co-design solution RAMBDA leverages current RDMA and emerging cache-coherent off-chip interconnect technologies and consists of the following four hardware and software components: (1) unified abstraction of inter- and intra-machine communications synergistically managed by one-sided RDMA write and cache-coherent memory write; (2) efficient notification of requests to accelerators assisted by cache coherence; (3) cache-coherent accelerator architecture directly interacting with NIC; and (4) adaptive device-to-host data transfer for modern server memory systems comprising both DRAM and NVM exploiting state-of-the-art features in CPUs and PCIe. We prototype RAMBDA with a commercial system and evaluate three popular datacenter applications: (1) in-memory key-value store, (2) chain replication-based distributed transaction system, and (3) deep learning recommendation model inference. The evaluation shows that RAMBDA provides 30.1-69.1% lower latency, up to 2.5x higher throughput, and ~3x higher energy efficiency than the current state-of-the-art solutions.<\/p>\n","protected":false},"excerpt":{"rendered":"
Responding to the “datacenter tax” and “killer microseconds” problems for memory-intensive datacenter applications, diverse solutions including Smart NIC-based ones have been proposed. Nonetheless, they often suffer from high overhead of communications over network and\/or PCIe links. 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