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63 Commits (3365ad18a5e0c86b23c6272e5adcedd333fc45cb)

Author SHA1 Message Date
comfyanonymous 1e4e342f54
Fix noise with ancestral samplers when inferencing on cpu. (#11528) 2025-12-26 22:03:01 -05:00
chaObserv 5d9ad0c6bf
Fix the last step with non-zero sigma in sa_solver (#11380) 2025-12-17 13:57:40 -05:00
chaObserv 827bb1512b
Add exp_heun_2_x0 sampler series (#11360) 2025-12-16 23:35:43 -05:00
chaObserv 6592bffc60
seeds_2: add phi_2 variant and sampler node (#11309) 
* Add phi_2 solver type to seeds_2

* Add sampler node of seeds_2
 2025-12-14 00:03:29 -05:00
blepping 1a85483da1
Fix depending on asserts to raise an exception in BatchedBrownianTree and Flash attn module (#9884) 
Correctly handle the case where w0 is passed by kwargs in BatchedBrownianTree
 2025-09-15 20:05:03 -04:00
chaObserv 32a627bf1f
SEEDS: update noise decomposition and refactor (#9633) 
- Update the decomposition to reflect interval dependency
- Extract phi computations into functions
- Use torch.lerp for interpolation
 2025-08-31 00:01:45 -04:00
Gangin Park 3aad339b63
Add DPM++ 2M SDE Heun (RES) sampler (#9542) 2025-08-27 19:07:31 -04:00
chaObserv e729a5cc11
Separate denoised and noise estimation in Euler CFG++ (#9008) 
This will change their behavior with the sampling CONST type.
It also combines euler_cfg_pp and euler_ancestral_cfg_pp into one main function.
 2025-07-23 19:47:05 -04:00
chaObserv aac10ad23a
Add SA-Solver sampler (#8834) 2025-07-08 16:17:06 -04:00
chaObserv f41f323c52
Add the denoising step to several samplers (#8780) 2025-07-03 19:20:53 -04:00
chaObserv b22e97dcfa
Migrate ER-SDE from VE to VP algorithm and add its sampler node (#8744) 
Apply alpha scaling in the algorithm for reverse-time SDE and add custom ER-SDE sampler node for other solver types (SDE, ODE).
 2025-07-01 02:38:52 -04:00
chaObserv 8042eb20c6
Singlestep DPM++ SDE for RF (#8627) 
Refactor the algorithm, and apply alpha scaling.
 2025-06-24 14:59:09 -04:00
chaObserv 8e81c507d2
Multistep DPM++ SDE samplers for RF (#8541) 
Include alpha in sampling and minor refactoring
 2025-06-16 14:47:10 -04:00
chaObserv 53e8d8193c
Generalize SEEDS samplers (#8529) 
Restore VP algorithm for RF and refactor noise_coeffs and half-logSNR calculations
 2025-06-14 16:58:16 -04:00
Pam 1b3bf0a5da
Fix res_multistep_ancestral sampler (#8030) 2025-05-09 20:14:13 -04:00
chaObserv c15909bb62
CFG++ for gradient estimation sampler (#7809) 2025-04-28 13:51:35 -04:00
chaObserv e51d9ba5fc
Add SEEDS (stage 2 & 3 DP) sampler (#7580) 
* Add seeds stage 2 & 3 (DP) sampler

* Change the name to SEEDS in comment
 2025-04-12 18:36:08 -04:00
chaObserv fd5297131f
Guard the edge cases of noise term in er_sde (#7265) 2025-03-16 06:02:25 -04:00
chaObserv 3fc688aebd
Ensure the extra_args in dpmpp sde series (#7204) 2025-03-12 17:28:59 -04:00
chaObserv 01015bff16
Add er_sde sampler (#7187) 2025-03-12 02:42:37 -04:00
Pam caeb27c3a5
res_multistep: Fix cfgpp and add ancestral samplers (#6731) 2025-02-08 19:39:58 -05:00
chaObserv e857dd48b8
Add gradient estimation sampler (#6554) 2025-01-22 05:29:40 -05:00
Sergii Dymchenko ebf038d4fa
Use `torch.special.expm1` (#6388) 
* Use `torch.special.expm1`

This function provides greater precision than `exp(x) - 1` for small values of `x`.

Found with TorchFix https://github.com/pytorch-labs/torchfix/

* Use non-alias
 2025-01-19 04:54:32 -05:00
Pam c78a45685d
Rewrite res_multistep sampler and implement res_multistep_cfg_pp sampler. (#6462) 2025-01-14 18:20:06 -05:00
comfyanonymous 90f349f93d Add res_multistep sampler from the cosmos code. 
This sampler should work with all models.
 2025-01-12 03:10:07 -05:00
comfyanonymous 4209edf48d Make a few more samplers deterministic. 2025-01-07 02:12:32 -05:00
comfyanonymous 916d1e14a9 Make ancestral samplers more deterministic. 2025-01-06 03:04:32 -05:00
comfyanonymous d170292594 Remove some trailing white space. 2024-12-27 18:02:30 -05:00
comfyanonymous c1b92b719d Some optimizations to euler a. 2024-12-03 06:11:52 -05:00
comfyanonymous 2d5b3e0078 Remove useless code. 2024-12-02 06:49:55 -05:00
comfyanonymous 8e4118c0de make dpm_2_ancestral work with rectified flow. 2024-12-01 07:37:41 -05:00
comfyanonymous d605677b33 Make euler_ancestral work on flow models (credit: Ashen). 2024-10-25 19:53:44 -04:00
comfyanonymous f584758271 Cleanup some useless lines. 2024-10-14 21:02:39 -04:00
chaObserv 479a427a48
Add dpmpp_2m_cfg_pp (#4992) 2024-09-24 02:42:56 -04:00
yoinked e7d4782736
add laplace scheduler [2407.03297] (#4990) 
* add laplace scheduler [2407.03297]

* should be here instead lol

* better settings
 2024-09-19 23:23:09 -04:00
comfyanonymous 9f4daca9d9 Doesn't really make sense for cfg_pp sampler to call regular one. 2024-09-11 02:51:36 -04:00
yoinked b5d0f2a908
Add CFG++ to DPM++ 2S Ancestral (#3871) 
* Update sampling.py

* Update samplers.py

* my bad

* "fix" the sampler

* Update samplers.py

* i named it wrong

* minor sampling improvements

mainly using a dynamic rho value (hey this sounds a lot like smea!!!)

* revert rho change

rho? r? its just 1/2
 2024-09-11 02:49:44 -04:00
comfyanonymous 2622c55aff Automatically use RF variant of dpmpp_2s_ancestral if RF model. 2024-08-18 00:47:25 -04:00
Ashen 1beb348ee2 dpmpp_2s_ancestral_RF for rectified flow (Flux, SD3 and Auraflow). 2024-08-18 00:33:30 -04:00
comfyanonymous 05e831697a Switch to the real cfg++ method in the samplers. 
The old _pp ones will be updated automatically to the regular ones with 2x
the cfg.

My fault for not checking what the "_pp" samplers actually did.
 2024-06-29 11:59:48 -04:00
comfyanonymous 44947e7ad4 Add DEIS order 3 sampler. 
Order 4 seems to give bad results.
 2024-06-26 22:40:05 -04:00
comfyanonymous 69d710e40f Implement my alternative take on CFG++ as the euler_pp sampler. 
Add euler_ancestral_pp which is the ancestral version of euler with the
same modification.
 2024-06-25 07:41:52 -04:00
comfyanonymous d5efde89b7 Add ipndm_v sampler, works best with the exponential scheduler. 2024-06-20 08:51:49 -04:00
comfyanonymous e11052afcf Add ipndm sampler. 2024-06-19 16:32:30 -04:00
comfyanonymous f2e844e054 Optimize some unneeded if conditions in the sampling code. 2024-06-15 02:26:19 -04:00
comfyanonymous f81a6fade8 Fix some edge cases with samplers and arrays with a single sigma. 2024-05-01 17:05:30 -04:00
comfyanonymous 5d875d77fe Fix regression with lcm not working with batches. 2024-03-20 20:48:54 -04:00
comfyanonymous 150a3e946f Make LCM sampler use the model noise scaling function. 2024-03-20 01:35:59 -04:00
comfyanonymous 57eea0efbb heunpp2 sampler. 2023-11-14 23:50:55 -05:00
comfyanonymous 002aefa382 Support lcm models. 
Use the "lcm" sampler to sample them, you also have to use the
ModelSamplingDiscrete node to set them as lcm models to use them properly.
 2023-11-09 18:30:22 -05:00