Issues

• k-point grids and spin settings in OMat24 static calculations

  facebookresearch/fairchem#2261 · Filter by author sofiia-chorna opened on Oct 27, 2026

• Parallel merged inference reuses stale metadata after the first prediction

  facebookresearch/fairchem#2259 · Filter by author ricardoleal20 opened on Oct 25, 2026

• Add support for nitro with custom fine-tuned UMA models

  facebookresearch/fairchem#2253 · Filter by author Andrew-S-Rosen opened on Oct 22, 2026
  5

• spin means spin multiplicity, which is a recurring source of confusion; proposal: accept multiplicity as an alias and clarify docs

  facebookresearch/fairchem#2242 · Filter by author Hopper1313 opened on Oct 15, 2026
  3

• Finetuning UMA-s (uma-s-1p2) improves force RMSE (~14.1 meV) and not energies (~20 meV). The calculated interaction energy using the fine-tuned model worsens. Is this forgetting, and is there a recommended recipe to avoid it?

  facebookresearch/fairchem#2239 · Filter by author Tomabasiofon opened on Oct 14, 2026

• Asymmetric water density profiles with eSEN in ASE and LAMMPS

  facebookresearch/fairchem#2237 · Filter by author OlgaChalykh opened on Oct 12, 2026

• Broken external documentation links detected

  link-check
  facebookresearch/fairchem#2236 · Filter by author github-actions opened on Oct 12, 2026
  1

• Clarification: UMA-S-1.2.1 OC22 energy label and dipole convention for decorated oxide slabs

  facebookresearch/fairchem#2227 · Filter by author iamzjm123456 opened on Oct 7, 2026

• uma-s-1p2p1

  facebookresearch/fairchem#2226 · Filter by author nhadler opened on Oct 7, 2026
  1

• Dataset for uma-s-1.2 is not documented in the Hugging Face

  facebookresearch/fairchem#2215 · Filter by author gitlzzz opened on Oct 1, 2026

• Access request for UMA

  facebookresearch/fairchem#2209 · Filter by author kgandikota459 opened on Sep 28, 2026
  1

• Loss reads the device 15 times per step when training UMA-S conserving on 8x B200

  stale
  facebookresearch/fairchem#2195 · Filter by author TarzanZhao opened on Sep 11, 2026
  4

  

• uma-m-1p1 predictor construction stalls indefinitely after checkpoint download completes (uma-s variants load fine)

  facebookresearch/fairchem#2095 · Filter by author JinukMoon opened on Jul 18, 2026
  1