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Add GradStore::insert_id for inserting gradients by tensor ID #3038

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Merged
ivarflakstad merged 1 commit into from
Sep 6, 2025
Merged

Add GradStore::insert_id for inserting gradients by tensor ID #3038

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5 changes: 5 additions & 0 deletions candle-core/src/backprop.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -754,6 +754,11 @@ impl GradStore {
self.0.insert(tensor.id(), grad)
}

/// Insert a gradient tensor associated with the given tensor id, returning the previous gradient tensor if it existed
pub fn insert_id(&mut self, id: TensorId, grad: Tensor) -> Option<Tensor> {
self.0.insert(id, grad)
}

/// Get the gradient tensor associated with the given tensor, or, if it does not exist,
/// insert a tensor of zeroes, with the same shape and type as the given tensors and return it
fn or_insert(&mut self, tensor: &Tensor) -> Result<&mut Tensor> {
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