pyscf / pyscf/gpu4pyscf

RESP calculations - mol.atom_charges() seems to be causing the problem.

Open
#313 4 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

bug
Dominant language
Cuda
Stars
351
Forks
84
Avg merge
3d 2h
Merged PRs (30d)
35

Description

for gpu4pyscf/pop/esp.py

It looks like you used mol.atom_charges() to get the atomic number in that code.
However, when using ECP, the value obtained through mol.atom_charges() is not the same as the atomic number.
I wonder if this is intentional or just an error. I think this potentially holds the possibility that the function will return the wrong value.

+) Additionally, in esp.py, you imported pyscf.data.radii, but I wonder if you defined it newly and used it, rather than importing radii.VDW as R_VDW and modifying it slightly (R_VDW[0]).

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading gpu4pyscf/pop/esp.py and trace the RESP calculation's use of mol.atom_charges() with ECP. Inspect how pyscf.data.radii is imported and used, then verify the reported calculation uses the intended atomic-number and radius values; done means the ECP case no longer risks incorrect RESP results and the radius handling is resolved.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
43/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.