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Remote Direct Memory Access (RDMA)

Remote Direct Memory Access definition

Remote Direct Memory Access (RDMA) is a technology that allows computers in a network to exchange data directly from their memory without involving the CPUs. Because the computers transfer data with very little involvement from the operating system, the transfers are much faster and more efficient. RDMA is great for high-performance environments like data centers where speed is essential.

See also: low latency

Benefits of Remote Direct Memory Access

  • Speeds up data exchange between computers' memories, making transfers quicker.
  • Takes data transfer tasks off the CPU, freeing it up for other jobs.
  • Cuts down the time data takes to travel between computers, making responses faster.
  • Makes better use of network resources, reducing congestion and optimizing bandwidth.
  • Efficiently handles data transfers over large networks, making it great for big computing setups.

Where is Remote Direct Memory Access used?

  • Big data processing — RDMA helps big data systems like Hadoop process large amounts of data faster.
  • Connecting databases — RDMA speeds up communication between database servers, improving database performance.
  • Scientific computing — RDMA is used in scientific research to speed up calculations and simulations.
  • Storage systems — RDMA is used in storage networks for faster data access and transfer speeds.
  • Virtualized environments — RDMA improves communication between virtual machines in virtualized setups.
  • Content delivery — RDMA boosts content delivery speed in online networks (like the loading of web pages, images, and videos).