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No checkpoints saved during pretraining in Google Colab despite log.log_model and save_interval set.

bugSomething isn't workingSomething isn't working

Status: Open.

#2223 In lightning-AI/litgpt;

· harshitgavita-07 opened on Mar 26, 2026

mask_cache in kv-cache path seems to force attn_mask, preventing flash attention

questionFurther information is requestedFurther information is requested

Status: Open.

#2220 In lightning-AI/litgpt;

· sea-with-sakura opened on Mar 23, 2026

Gradient Clipping Doesn't Work in Finetuning

questionFurther information is requestedFurther information is requested

Status: Open.

#2191 In lightning-AI/litgpt;

· AI-God-Dev opened on Jan 15, 2026

Memory Management Issues

Status: Open.

#2190 In lightning-AI/litgpt;

· AI-God-Dev opened on Jan 15, 2026

Unsafe Checkpoint Loading - This Is Bad

Status: Open.

#2189 In lightning-AI/litgpt;

· AI-God-Dev opened on Jan 15, 2026

Feature: Support for Multimodality

enhancementNew feature or requestNew feature or request

Status: Open.

#2173 In lightning-AI/litgpt;

· sanggusti opened on Dec 23, 2025

Request to support MedGemma and MedSigLip

enhancementNew feature or requestNew feature or request

Status: Open.

#2172 In lightning-AI/litgpt;

· sanggusti opened on Dec 23, 2025

difference during inference with or without kvcache

bugSomething isn't workingSomething isn't working

Status: Open.

#2165 In lightning-AI/litgpt;

· guangyuli-uoe opened on Nov 27, 2025

Cut cross entropy for pretraining and finetuning

enhancementNew feature or requestNew feature or request

Status: Open.

#2163 In lightning-AI/litgpt;

· Aceticia opened on Nov 19, 2025

Support for SSM models (Mamba, Mamba2)

enhancementNew feature or requestNew feature or request

Status: Open.

#2158 In lightning-AI/litgpt;

· radulescupetru opened on Nov 14, 2025

jsonargparse==4.42.0 causing test_config_help failure

Status: Open.

#2150 In lightning-AI/litgpt;

· bhimrazy opened on Oct 30, 2025

Request to support OLMoE

enhancementNew feature or requestNew feature or request

Status: Open.

#2133 In lightning-AI/litgpt;

· yangdongchao opened on Sep 12, 2025