RDMA Communication Path Setup via Control Network
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Solution Overview
Problem
In computing systems connected via an optical network, the time required to establish RDMA communication paths is prolonged due to the sequential setting of main signal communication paths and RDMA communication paths, which delays the initiation of RDMA communication.
Innovation Solution
A communication system where setting information for the main signal communication path is transmitted via a control communication path, allowing the RDMA communication path to be set in parallel, with a control unit securing a memory area and transmitting this information to establish the RDMA communication path concurrently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main signal communication path is established sequentially before the RDMA communication path, then the communication path setting is reliable and orderly, but the time required to start RDMA communication is prolonged
Solution Approach 1:
The patent applies preliminary action by transmitting RDMA communication path setting information via the control communication path before the main signal communication path is fully established. The control unit secures memory areas and prepares RDMA setting information in advance, allowing the RDMA path configuration to proceed concurrently with main signal path establishment rather than waiting sequentially. This reduces the overall time to start RDMA communication while maintaining reliability through proper coordination of the two parallel processes.
2Loss of time
If the RDMA communication path is set in parallel with the main signal communication path, then the time required to start RDMA communication is reduced, but the complexity of coordinating both paths increases
Solution Approach 1:
The patent uses the control communication path as an intermediary to coordinate the parallel setting of RDMA and main signal communication paths. The control unit manages the parallel processes by transmitting control information and setting information through this intermediary channel, allowing coordination without increasing overall system complexity. The control communication path acts as a mediator that synchronizes the two parallel operations, reducing coordination complexity compared to direct management of both paths.
Data Source
AI summary
A communication system includes a plurality of computing machines connected to an optical network, in which the optical network includes a main signal communication path and a control communication path. Each of the computing machines and includes an RDMA communication unit that performs transmission of setting information for setting the main signal communication path to a computing machine of an access destination via the control communication path; and a main signal transmitting/receiving unit that establishes the main signal communication path based on the setting information. The RDMA communication unit gives an instruction for setting of the RDMA communication path in parallel with the transmission of the setting information. The computing machine further includes an RDMA control unit that secures a memory area for RDMA communication and transmits setting information including the memory area to the computing machine of the access destination.