Data transmission method, chip, and device

A chip comprising:

• a processor and a communication interface, wherein the communication interface is configured to communicate with a processor of a source device in which the chip is located, and the processor of the chip is configured to implement:
• obtain a first notification message, wherein the first notification message indicates that a first to-be-processed remote direct memory access (RDMA) request exists in a first queue of the source device, and the first queue is used to store a request of a first service application of the source device;
• obtain a second notification message, wherein the second notification message indicates that a second to-be-processed RDMA request exists in a second queue of the source device, and the second queue is used to store a request of a second service application of the source device;
• determine a processing sequence of the first queue and the second queue according to a service level of the first service application and a service level of the second service application;
• determine, according to a specified rule, a storage manner in which a context of the first queue is stored in a storage apparatus, wherein the context of the first queue indicates an identifier of the destination device and an identifier of a queue associated with the first queue in the destination device;
• obtain the context of the first queue;
• and
• store, the context of the first queue in the storage apparatus of the network interface card in accordance with the storage manner;
• and
• send the first to-be-processed RDMA request and the second to-be-processed RDMA request to a destination device according to the processing sequence, wherein the processor of the chip is configured to implement one of:
• (1) determine, based on an operation type of the to-be-processed RDMA request in the first queue, the storage manner in which the context of the first queue is stored in the storage apparatus, wherein the operation type comprises a persistent collective operation;
• and
• (2) compare a size of a data packet in the to-be-processed RDMA request in the first queue with a first threshold;
• and
• determine, based on a comparison result, the storage manner in which the context of the first queue is stored in the storage apparatus.

A device comprising:

• a first processor, a memory, and a network interface card,
• wherein the first processor is configured to run a plurality of service applications, each service application is associated with one queue, the memory is configured to store to-be-processed remote direct memory access (RDMA) requests in queues associated with the plurality of service applications, and the network interface card is configured to implement:
• obtain a first notification message, wherein the first notification message indicates that a first to-be-processed RDMA request exists in a first queue of the device, and the first queue is used to store a request of a first service application of the device;
• obtain a second notification message, wherein the second notification message indicates that a second to-be-processed RDMA request exists in a second queue of the device, and the second queue is used to store a request of a second service application of the device;
• determine a processing sequence of the first queue and the second queue according to a service level of the first service application and a service level of the second service application;
• determine, according to a specified rule, a storage manner in which a context of the first queue is stored in a storage apparatus, wherein the context of the first queue indicates an identifier of the destination device and an identifier of a queue associated with the first queue in the destination device;
• obtain the context of the first queue;
• and
• store, the context of the first queue in the storage apparatus of the network interface card in accordance with the storage manner;
• and
• send the first to-be-processed RDMA request and the second to-be-processed RDMA request to a destination device according to the processing sequence, wherein the network interface card is configured to implement one of:
• (1) determine, based on an operation type of the to-be-processed RDMA request in the first queue, the storage manner in which the context of the first queue is stored in the storage apparatus, wherein the operation type comprises a persistent collective operation;
• and
• (2) compare a size of a data packet in the to-be-processed RDMA request in the first queue with a first threshold;
• and
• determine, based on a comparison result, the storage manner in which the context of the first queue is stored in the storage apparatus.