python freezes while performing torch operations #160809
Description
🐛 Describe the bug
i have made a docker container for xpu with comfyui. As the titel says the container just freezes sometime bc th python instance is getting defunct/ becomes a zombie the logs just say the last stap it is on and then nothing
i feel like there is somewhere a deadlock is happening
Pytoch: 2.8+xpu
IPEX: 2.8.10+xpu
dockerfile:
FROM intel/intel-extension-for-pytorch:2.8.10-xpu
# Install basic dependencies + OpenGL libraries
RUN apt-get update && apt-get install -y \
git wget python3-venv \
libgl1 libglib2.0-0 \
&& rm -rf /var/lib/apt/lists/*
# Create persistent workspace directory for ComfyUI
WORKDIR /workspace
# Clone ComfyUI (latest)
RUN git clone https://github.com/comfyanonymous/ComfyUI.git
# Install ComfyUI dependencies in system environment (so they persist with volume)
WORKDIR /workspace/ComfyUI
RUN pip install --upgrade pip && \
pip install -r requirements.txt
# Default command will run ComfyUI
CMD ["python", "main.py", "--listen", "0.0.0.0", "--port", "9002"]
Versions
Collecting environment information...
PyTorch version: 2.8.0+xpu
Is debug build: False
CUDA used to build PyTorch: None
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: Could not collect
Libc version: glibc-2.35
Python version: 3.10.12 (main, May 27 2025, 17:12:29) [GCC 11.4.0] (64-bit runtime)
Python platform: Linux-6.12.24-Unraid-x86_64-with-glibc2.35
Is CUDA available: False
CUDA runtime version: No CUDA
CUDA_MODULE_LOADING set to: N/A
GPU models and configuration: No CUDA
Nvidia driver version: No CUDA
cuDNN version: No CUDA
Is XPU available: True
XPU used to build PyTorch: 20250101
Intel GPU driver version:
- intel-opencl-icd: 25.05.32567.19-1099~22.04
- libze1: 1.20.2.0-1098~22.04
Intel GPU models onboard:
N/A
Intel GPU models detected: - [0] _XpuDeviceProperties(name='Intel(R) Arc(TM) B580 Graphics', platform_name='Intel(R) oneAPI Unified Runtime over Level-Zero', type='gpu', driver_version='1.6.33578+15', total_memory=11605MB, max_compute_units=160, gpu_eu_count=160, gpu_subslice_count=20, max_work_group_size=1024, max_num_sub_groups=64, sub_group_sizes=[16 32], has_fp16=1, has_fp64=1, has_atomic64=1)
HIP runtime version: N/A
MIOpen runtime version: N/A
Is XNNPACK available: True
CPU:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 43 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: AuthenticAMD
Model name: AMD Ryzen 7 3700X 8-Core Processor
CPU family: 23
Model: 113
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 1
Stepping: 0
Frequency boost: enabled
CPU max MHz: 4426.0000
CPU min MHz: 550.0000
BogoMIPS: 7199.54
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid overflow_recov succor smca sev sev_es
Virtualization: AMD-V
L1d cache: 256 KiB (8 instances)
L1i cache: 256 KiB (8 instances)
L2 cache: 4 MiB (8 instances)
L3 cache: 32 MiB (2 instances)
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerability Gather data sampling: 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: Mitigation; untrained return thunk; SMT enabled with STIBP protection
Vulnerability Spec rstack overflow: Mitigation; Safe RET
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; Retpolines; IBPB conditional; STIBP always-on; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
Versions of relevant libraries:
[pip3] dpcpp-cpp-rt==2025.1.1
[pip3] impi-rt==2021.15.0
[pip3] intel-cmplr-lib-rt==2025.1.1
[pip3] intel-cmplr-lib-ur==2025.1.1
[pip3] intel-cmplr-lic-rt==2025.1.1
[pip3] intel_extension_for_pytorch==2.8.10+xpu
[pip3] intel-opencl-rt==2025.1.1
[pip3] intel-openmp==2025.1.1
[pip3] intel-pti==0.12.3
[pip3] intel-sycl-rt==2025.1.1
[pip3] mkl==2025.1.0
[pip3] numpy==1.26.4
[pip3] oneccl==2021.15.2
[pip3] oneccl-bind-pt==2.8.0+xpu
[pip3] oneccl-devel==2021.15.2
[pip3] onemkl-sycl-blas==2025.1.0
[pip3] onemkl-sycl-dft==2025.1.0
[pip3] onemkl-sycl-lapack==2025.1.0
[pip3] onemkl-sycl-rng==2025.1.0
[pip3] onemkl-sycl-sparse==2025.1.0
[pip3] pytorch-triton-xpu==3.4.0
[pip3] tbb==2022.1.0
[pip3] tcmlib==1.3.0
[pip3] torch==2.8.0+xpu
[pip3] torchaudio==2.8.0+xpu
[pip3] torchsde==0.2.6
[pip3] torchvision==0.23.0+xpu
[pip3] umf==0.10.0
[conda] Could not collect