reduce gather
时间: 2023-09-25 10:06:36 浏览: 55
"Reduce" and "gather" are two operations commonly used in parallel computing and distributed systems.
Reduce is an operation that takes a set of values and combines them into a single value. For example, if you have a set of numbers {1, 2, 3, 4}, you can perform a "reduce" operation to sum them up and get a single value of 10.
Gather is an operation that collects data from multiple sources and combines them into a single location. For example, if you have a distributed database with data stored across multiple nodes, you can perform a "gather" operation to collect all the data from the nodes and combine them into a single database.
In some cases, "reduce" and "gather" operations can be used together. For example, you can perform a "reduce" operation on each node in a distributed system and then perform a "gather" operation to combine the results into a single output.
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