---
tags:
- ahead-of-time
- pytorch
library_name: diffusers
---
> [!NOTE]
> This **README** has been auto-generated by the **HF Job** run linked below
> and the whole repository is a reproducible artifact of this Job
# Ahead-of-time repository
AoT repos contain **pre-compiled binaries** of PyTorch models, enabling:
- fast startup times (no `torch.compile` needed)
- significant **speedup**
- **ZeroGPU** compatibility
## How to use
``` python
import os
import tempfile
import numpy as np
import torch
import spaces
from PIL import Image
from diffusers import LTX2InContextPipeline
from diffusers.pipelines.ltx2.pipeline_ltx2_ic_lora import LTX2ReferenceCondition
from diffusers.pipelines.ltx2.utils import DISTILLED_SIGMA_VALUES
# base == distilled in architecture, so one compiled graph serves both; distilled is
# what most demos use. The AOTI package is weight-agnostic, so this base graph also
# serves any FUSED LoRA (fuse_lora before aoti_load on the Space).
MODEL_ID = os.environ.get("LTX_MODEL_ID", "diffusers/LTX-2.3-Distilled-Diffusers")
pipe = LTX2InContextPipeline.from_pretrained(MODEL_ID, torch_dtype=torch.bfloat16)
pipe.to("cuda")
pipe.vae.enable_tiling()
spaces.aoti_load(
module=pipe.transformer,
repo_id='linoyts/LTX-2.3-Transformer-GroupA-sm120-cu130-r9e',
)
```
## How to reproduce or customize
``` bash
hf jobs uv run job.py --flavor rtx-pro-6000 --image pytorch/pytorch:2.9.1-cuda13.0-cudnn9-devel --secrets HF_TOKEN
```
## Samples
| Before compilation (0.37s) | After compilation (0.30s) |
|---|---|
| | |
Speedup: **1.21x**
## Environment
Click to expand
```
PyTorch version: 2.12.0+cu130
Is debug build: False
CUDA used to build PyTorch: 13.0
ROCM used to build PyTorch: N/A
OS: Ubuntu 22.04.5 LTS (x86_64)
GCC version: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
Clang version: Could not collect
CMake version: version 4.1.2
Libc version: glibc-2.35
Python version: 3.10.19 (main, Oct 31 2025, 23:02:46) [Clang 21.1.4 ] (64-bit runtime)
Python platform: Linux-6.12.88-119.157.amzn2023.x86_64-x86_64-with-glibc2.35
Is CUDA available: True
CUDA runtime version: 13.0.48
CUDA_MODULE_LOADING set to:
GPU models and configuration: GPU 0: NVIDIA RTX PRO 6000 Blackwell Server Edition
Nvidia driver version: 580.159.03
cuDNN version: Could not collect
Is XPU available: False
HIP runtime version: N/A
MIOpen runtime version: N/A
Is XNNPACK available: True
Caching allocator config: N/A
CPU:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 46 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 192
On-line CPU(s) list: 0-191
Vendor ID: GenuineIntel
Model name: Intel(R) Xeon(R) Platinum 8559C
CPU family: 6
Model: 207
Thread(s) per core: 2
Core(s) per socket: 48
Socket(s): 2
Stepping: 2
BogoMIPS: 4800.00
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq monitor ssse3 fma cx16 pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault ssbd ibrs ibpb stibp ibrs_enhanced fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves avx_vnni avx512_bf16 wbnoinvd ida arat avx512vbmi umip pku ospke waitpkg avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg tme avx512_vpopcntdq rdpid cldemote movdiri movdir64b md_clear serialize amx_bf16 avx512_fp16 amx_tile amx_int8 flush_l1d arch_capabilities
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 4.5 MiB (96 instances)
L1i cache: 3 MiB (96 instances)
L2 cache: 192 MiB (96 instances)
L3 cache: 640 MiB (2 instances)
NUMA node(s): 2
NUMA node0 CPU(s): 0-47,96-143
NUMA node1 CPU(s): 48-95,144-191
Vulnerability Gather data sampling: Not affected
Vulnerability Indirect target selection: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Enhanced / Automatic IBRS; IBPB conditional; PBRSB-eIBRS SW sequence; BHI BHI_DIS_S
Vulnerability Srbds: Not affected
Vulnerability Tsa: Not affected
Vulnerability Tsx async abort: Not affected
Vulnerability Vmscape: Not affected
Versions of relevant libraries:
[pip3] Could not collect
[conda] numpy 2.3.4 py311h2e04523_0 conda-forge
[conda] nvidia-cublas 13.0.0.19 pypi_0 pypi
[conda] nvidia-cuda-cupti 13.0.48 pypi_0 pypi
[conda] nvidia-cuda-nvrtc 13.0.48 pypi_0 pypi
[conda] nvidia-cuda-runtime 13.0.48 pypi_0 pypi
[conda] nvidia-cudnn-cu13 9.13.0.50 pypi_0 pypi
[conda] nvidia-cufft 12.0.0.15 pypi_0 pypi
[conda] nvidia-curand 10.4.0.35 pypi_0 pypi
[conda] nvidia-cusolver 12.0.3.29 pypi_0 pypi
[conda] nvidia-cusparse 12.6.2.49 pypi_0 pypi
[conda] nvidia-cusparselt-cu13 0.8.0 pypi_0 pypi
[conda] nvidia-nccl-cu13 2.27.7 pypi_0 pypi
[conda] nvidia-nvjitlink 13.0.39 pypi_0 pypi
[conda] nvidia-nvtx 13.0.39 pypi_0 pypi
[conda] optree 0.17.0 pypi_0 pypi
[conda] torch 2.9.1+cu130 pypi_0 pypi
[conda] torchaudio 2.9.1+cu130 pypi_0 pypi
[conda] torchelastic 0.2.2 pypi_0 pypi
[conda] torchvision 0.24.1+cu130 pypi_0 pypi
[conda] triton 3.5.1 pypi_0 pypi
```