From fa47ce1ab570d33bb245a49f4cd63267282b2a54 Mon Sep 17 00:00:00 2001
From: SolitaryThinker <wlsaidhi@gmail.com>
Date: Tue, 21 Jul 2026 21:05:59 -0700
Subject: [PATCH] [perf]: enable packed LTX projections in overfit recipe

---
 examples/train/configs/overfit_ltx2_t2v.yaml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/examples/train/configs/overfit_ltx2_t2v.yaml b/examples/train/configs/overfit_ltx2_t2v.yaml
index cb0aedba0..9bbd39a55 100644
--- a/examples/train/configs/overfit_ltx2_t2v.yaml
+++ b/examples/train/configs/overfit_ltx2_t2v.yaml
@@ -90,4 +90,8 @@ callbacks:
 # Required so the LTX2T2VConfig pipeline config is resolved from
 # init_from (without a `pipeline:` key the loader falls back to a
 # generic PipelineConfig and the LTX-2 DiT cannot be constructed).
-pipeline: {}
+pipeline:
+  dit_config:
+    # Persistently pack video self-attention QKV and text cross-attention KV
+    # projections. Checkpoints are still loaded and exported with split keys.
+    pack_attention_projections: true