Abstract: Disclosed are a neural network model update method and device, and a computer storage medium. The method includes: randomly generating a preset number of sub-neural network models as nodes in a blockchain; using a ring signature to share a local data set in the blockchain, and uniformly dividing a data set in the blockchain to generate a training set and a test set; training each node through the training set to generate a trained model, packaging the trained model as a model transaction and sharing the model transaction in the blockchain; using the test set selected by voting to test the model transaction and generating a test result; when the test result is greater than a benchmark evaluation, taking the sub-neural network model corresponding to the test result as a valid vote; and voting a previous block corresponding to the valid vote, selecting a consistent block, and updating all nodes.

Abstract: A liquid cooled plate and an electronic computing device are provided. The liquid cooled plate includes multiple channels communicated in sequence, and adjacent channels are communicated via a communicating portion. Multiple partitions divide each of the channels to multiple flow passages, and a part of each of the partitions extends into the communicating portion, and lengths of the multiple partitions extending into the communicating portion gradually increases or decreases according to a preset rule. With this arrangement, the coolant can be collected and redistributed before entering the next channel, which is more conducive to the uniform distribution of the coolant, thereby improving the overall heat exchange capacity of the liquid cooled plate, and thus can better meet the actual usage requirements.

Abstract: A cooling device includes a cooling plate and a buffer portion, a flow passage is formed in the cooling plate, and the buffer portion is arranged on the cooling plate. An inlet buffer zone and an outlet buffer portion are defined in the buffer portion, liquid flows into the flow passage through the inlet buffer zone and flows out of the flow passage through the outlet buffer portion. The liquid flows into the flow passage through the buffer portion, and the buffer portion can reduce the flow resistance of the liquid flowing into the flow passage. The liquid in the flow passage also flows out through the buffer portion, and the buffer portion can also reduce the flow resistance of the liquid flowing out of the flow passage.