Temporarily modify gradient recording. — with_no_grad • torch

Temporarily modify gradient recording.

Usage

with_no_grad(code)

local_no_grad(.env = parent.frame())

Arguments

code: code to be executed with no gradient recording.
.env: The environment to use for scoping.

Functions

local_no_grad(): Disable autograd until it goes out of scope

Examples

if (torch_is_installed()) {
x <- torch_tensor(runif(5), requires_grad = TRUE)
with_no_grad({
  x$sub_(torch_tensor(as.numeric(1:5)))
})
x
x$grad
}
#> torch_tensor
#> [ Tensor (undefined) ]