Clarify out of memory error on density #796
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
I have been testing the limits and for 10000 orbitals numpy needs to allocate 23GiB, which is too much for my RAM, and it fails.
It then throws a
numpy.core._exceptions._ArrayMemoryError
, which a user might not understand how to solve. Here we raise a clearer error for the user that is trying to compute the density.It takes veeery long to compute such a system with the direct method, but at least it can be computed.