Issues

• Weighted Cross Entropy Loss

  f-dangel/backpack#350 · Filter by author antoniobalordi opened on Jan 26, 2026
  1

• Support LLMs?

  f-dangel/backpack#346 · Filter by author RogerRogerUSC opened on Jul 27, 2025
  4

• Extending BCEWithLogitsLoss to non-scalar outputs (multi label)

  f-dangel/backpack#345 · Filter by author Leon0402 opened on Apr 19, 2025
  3

• Resnet + DiagHessian

  f-dangel/backpack#344 · Filter by author antoniobalordi opened on Apr 18, 2025
  1

• How to compute second-order hessian for custom module?

  f-dangel/backpack#340 · Filter by author XuZikang opened on Nov 18, 2024
  2

• Name collision with .output in real world modules

  f-dangel/backpack#330 · Filter by author Skylion007 opened on Nov 10, 2024
  1

• Request: Extension for GroupNorm

  f-dangel/backpack#328 · Filter by author ParthS007 opened on May 30, 2024
  1

• Feature request: BatchL2Grad for LayerNorm

  enhancementgood first issue
  f-dangel/backpack#327 · Filter by author f-dangel opened on May 22, 2024

• BackPACK with simple attention and additional layers

  f-dangel/backpack#326 · Filter by author nhianK opened on May 9, 2024
  1

• Missing Support for BatchNorm and AdaptiveAvgPool in HBP methods (KFAC, KFRA, KFLR) and GGNMP

  f-dangel/backpack#322 · Filter by author satnavpt opened on Feb 29, 2024
  8

• Feature for backpack on VAEs

  f-dangel/backpack#319 · Filter by author shubham0704 opened on Oct 19, 2023
  2

• Missing implementation of supported layers for DiagHessian and BatchDiagHessian

  f-dangel/backpack#316 · Filter by author hlzl opened on Sep 5, 2023

• Container modules with advanced control flow & modules with multiple inputs

  f-dangel/backpack#306 · Filter by author m-lyon opened on Jun 5, 2023
  23

• Optimizing the locations of the Jacobians

  f-dangel/backpack#300 · Filter by author Ludvins opened on Jan 30, 2023
  5

• [Feature Request] Levenberg Marquardt

  f-dangel/backpack#293 · Filter by author mizu-bai opened on Nov 17, 2022
  1

• Extending BCEWithLogitsLoss to non-binary labels

  enhancement
  f-dangel/backpack#281 · Filter by author f-dangel opened on Nov 4, 2022

• AttributeError: 'Parameter' object has no attribute 'grad_batch'

  f-dangel/backpack#270 · Filter by author LB-bulb opened on Oct 28, 2022
  9

• Support for Custom models?

  f-dangel/backpack#269 · Filter by author anegi19 opened on Oct 27, 2022
  1

• Support for LayerNorm

  good first issue
  f-dangel/backpack#263 · Filter by author Niccolo-Ajroldi opened on Sep 22, 2022
  3

• KFAC support in BatchNorm (eval mode)

  good first issue
  f-dangel/backpack#259 · Filter by author pyun-ram opened on Sep 1, 2022
  16

• memory leakage problem when loss.backward()

  f-dangel/backpack#258 · Filter by author SJShin-AI opened on Aug 25, 2022
  14

• Second order computations for nn.Upsample

  f-dangel/backpack#254 · Filter by author FrederikWarburg opened on Apr 12, 2022
  1

• AttributeError: 'BatchNorm2d' object has no attribute 'output'

  f-dangel/backpack#253 · Filter by author QiyaoWei opened on Mar 22, 2022
  4

• Parameter grads don't get initialized with BatchL2Grad and BatchNorm

  f-dangel/backpack#239 · Filter by author thomasahle opened on Jan 26, 2022
  7

• OOM eventually when using create_graph=True with BatchL2Grad

  f-dangel/backpack#238 · Filter by author crowsonkb opened on Jan 24, 2022
  2