Abstract: A central tube assembly for a battery, a battery, and a manufacturing method of a central tube assembly for a battery is provided. The central tube assembly for a battery comprises: a central tube and at least one battery center pin; the battery center pins are provided on the outer periphery of the central tube, each battery center pin is sleeved on the central tube to form the central tube assembly, and the battery center pins are electrically insulated from the central tube. The central tube assembly for a battery of the present disclosure overcomes the situation in the related art that the central tube is separated from the battery center pins, reduces a welding process during battery manufacturing, and greatly enhances the sealing performance of the battery.

Abstract: A method of performing ring allreduce operations is disclosed. The method includes sending a chunk of a message in a receive buffer at a current index of a send buffer to a next node in a virtual ring of nodes, receiving a chunk of the message from a previous node in the virtual ring of nodes and store the chunk at the current index of the receive buffer, and reducing a chunk in a send buffer at a previous index of the receive buffer and a chunk in the receive buffer at a previous index of the receive buffer and storing a result at the previous index of the receive buffer. The method includes repeating the sending, receiving and storing, and reducing and storing steps until all chunks of the message are reduced, and sending reduced chunks to the next node and receive reduced chunks from the previous node.