[Bugfix][Wan2.2] Apply UniPC flow shift once (#7576)

Signed-off-by: HAAZZZEEEE <wang-taicheng@qq.com>
2026-09-16 10:06:41 +08:00
1 parent 2185c4e26f
commit 3eb5c3b4e6
@@ -0,0 +1,97 @@
+{
+  "source_url": "https://github.com/Wan-Video/Wan2.2/blob/42bf4cfaa384bc21833865abc2f9e6c0e67233dc/wan/utils/fm_solvers_unipc.py",
+  "source_sha256": "0dec8c7ed17f6f2049275c6848113314da6ccec1c8db5bdc89df43c05c6038d9",
+  "git_head": "42bf4cfaa384bc21833865abc2f9e6c0e67233dc",
+  "num_train_timesteps": 1000,
+  "use_dynamic_shifting": false,
+  "reproduction": "Load FlowUniPCMultistepScheduler from source_url; construct with num_train_timesteps=1000, shift=1.0, use_dynamic_shifting=False; call set_timesteps(40, device='cpu', shift=12.0); record timesteps.tolist() and sigmas.tolist().",
+  "constructor_shift": 1.0,
+  "runtime_shift": 12.0,
+  "steps": 40,
+  "timesteps": [
+    999,
+    997,
+    995,
+    993,
+    990,
+    988,
+    985,
+    982,
+    979,
+    976,
+    972,
+    969,
+    965,
+    961,
+    956,
+    952,
+    947,
+    941,
+    936,
+    929,
+    922,
+    915,
+    907,
+    898,
+    888,
+    877,
+    865,
+    852,
+    837,
+    819,
+    799,
+    776,
+    749,
+    717,
+    678,
+    631,
+    571,
+    492,
+    386,
+    235
+  ],
+  "sigmas": [
+    0.9999166131019592,
+    0.9977826476097107,
+    0.9955461621284485,
+    0.9931996464729309,
+    0.9907346963882446,
+    0.988142192363739,
+    0.9854119420051575,
+    0.9825326800346375,
+    0.9794917702674866,
+    0.9762753844261169,
+    0.9728676676750183,
+    0.9692512154579163,
+    0.9654061794281006,
+    0.961310088634491,
+    0.9569376707077026,
+    0.95225989818573,
+    0.9472436308860779,
+    0.9418508410453796,
+    0.9360373020172119,
+    0.9297519326210022,
+    0.9229347705841064,
+    0.9155154228210449,
+    0.9074103832244873,
+    0.8985199332237244,
+    0.888724148273468,
+    0.8778772950172424,
+    0.865800678730011,
+    0.8522725701332092,
+    0.8370144367218018,
+    0.8196719288825989,
+    0.7997865080833435,
+    0.7767546772956848,
+    0.7497654557228088,
+    0.717703104019165,
+    0.6789888143539429,
+    0.6313128471374512,
+    0.5711563229560852,
+    0.49288034439086914,
+    0.38684695959091187,
+    0.23510953783988953,
+    0.0
+  ],
+  "implementation": "Wan-Video/Wan2.2 wan/utils/fm_solvers_unipc.py"
+}