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Gorgonia v0.9.10 Release Notes

Release Date: 2020-04-10 // about 4 years ago

  • In the previous version, the repeatOp was a compound operation. It had this function signature effectively: func repeat(a, nTimes *Node, axes ...int). So you could do something like repeat(a, 300, 1, 2, 3) in which a gets repeated 300 times across axes 1, 2 and 3.

    ⚡️ This has been deoptimized such that it's effectively func repeat(a, repeat *Node, axis int). The reason for this deoptimization is because upon further analyses of what the function actually does, it simply calls tensor.Repeat many times. This causes many new tensors to be allocated. But the whole point of symbolic operations is so that we may preallocate ahead of time.

    🐎 This deoptimization allows for the repeatOp to call tensor.RepeatReuse which allows for a repeat operation to reuse preallocated values, leading to less allocations, improving performance