python

PyTorch tensor not tracking gradients

RuntimeError: element .* does not require grad and does not have a grad_fn

Fixes

1.Set requires_grad=True on the tensor
2.Ensure the tensor is part of the computation graph (not detached)
3.Check that torch.no_grad() context isn't wrapping the computation

pytorchgradient

Related Errors

Asyncio event loop already running

RuntimeError: This event loop is already running

•Use nest_asyncio.apply() to allow nested event loops
•Use asyncio.run_coroutine_threadsafe() instead of asyncio.run()

Coroutine never awaited

RuntimeWarning: coroutine '.*' was never awaited

•Add 'await' before the coroutine call
•Use asyncio.create_task() to schedule the coroutine

Asyncio task was cancelled

asyncio\.CancelledError

•Handle CancelledError in try/except within the task
•Use asyncio.shield() to protect critical sections from cancellation