Retransmission method for multi-micro-package parallel processing structure based on compression transformation

Abstract

The invention discloses a retransmission method for a multi-micro-package parallel processing structure based on compression transformation in order to solve the problem that in node controller chip interface access control units, when an error occurs in multi-path parallel data, quick location and retransmission is needed. The technical scheme includes that a remapping module is added between a sending module and a retransmission buffer which are both in the multi-micro-package parallel processing structure and the structure of the retransmission buffer is improved. When a multi-micro-package is retransmitted, the remapping module compresses and transforms the multi-micro-package to remap effective single micro-packages to the retransmission buffer, and precisely locate the retransmitted single micro-packages initial addresses in the retransmission buffer when an error occurs in the transmission of the multi- micro-package. The single micro-packages with errors are read out, and after being pierced together to form N-path parallel data, the single micro-packages are submitted to the sending module. By the adoption of the retransmission method for the multi-micro-package parallel processing structure based on the compression transformation, storage space of the retransmission buffer is enabled to be reduced, the problem of quick location of the single micro-packages with the errors when a plurality of single micro-packages are transmitted simultaneously is solved, retransmission times are effectively reduced, and retransmission efficiency is improved.

Description

technical field [0001] The invention relates to a micropacket retransmission method for a retransmission buffer in a node controller chip, in particular to a retransmission method for multi-channel parallel data under a multi-micropacket (flit) parallel processing structure. Background technique [0002] Before introducing the technical scheme of the present invention, several definitions are given earlier: [0003] ●N: the number of single micro-packets contained in a multi-micro-packet, the multi-micro-packet processing structure can process N single micro-packets in parallel, and N is generally a power of 2; [0004] D: The depth of the retransmission buffer, D is generally a power of 2; [0005] ●W: The bit width of the retransmission buffer, W is generally an integer multiple of 8; [0006] ● / and %: Mathematical quotient and modulo operations, for positive integer p and integer a, a / p and a%p represent the quotient and remainder of dividing a by p, such as 17 / 3=5, 17...

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Problems solved by technology

[0031] The technical problem to be solved by the present invention is: Aiming at the problem that the multi-channel parallel data in the node controller chip interface access control part needs to be quickly located and retransmitted when there is an error, a compression transformation-oriented multi-micropacket parallel processing structure is proposed. The transmission method first compresses and transforms the multiple micropackets that enter the buffer at the same time, and only valid data enters the retransmission buffer, saving storage space and ensuring fast positioning and retransmission in case of errors

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