For torch==2.6.0.dev20250104, AttributeError: type object 'torch._C._distributed_c10d.BackendType' has no attribute 'XCCL'

[lifelongeeek]

🐛 Describe the bug

It seems that current required torch nightly version is dev20250104.
(reference: https://github.com/pytorch/executorch/blob/ee00caa7ed26917a05706e62a5850e6a2454d42c/install_requirements.py#L136C20-L136C31)

The installation of install_requirements.sh success, however, importing torch encounters the following error:

>>> import torch
torch.Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/__init__.py", line 2107, in <module>
    from torch import _VF as _VF, functional as functional  # usort: skip
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/functional.py", line 7, in <module>
    import torch.nn.functional as F
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/nn/__init__.py", line 8, in <module>
    from torch.nn.modules import *  # usort: skip # noqa: F403
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/nn/modules/__init__.py", line 1, in <module>
    from .module import Module  # usort: skip
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/nn/modules/module.py", line 29, in <module>
    from torch.utils._python_dispatch import is_traceable_wrapper_subclass
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/utils/__init__.py", line 8, in <module>
    from torch.utils import (
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/utils/data/__init__.py", line 1, in <module>
    from torch.utils.data.dataloader import (
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/utils/data/dataloader.py", line 20, in <module>
    import torch.distributed as dist
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/distributed/__init__.py", line 122, in <module>
    from .device_mesh import DeviceMesh, init_device_mesh
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/distributed/device_mesh.py", line 40, in <module>
    from torch.distributed.distributed_c10d import (
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/distributed/distributed_c10d.py", line 234, in <module>
    class Backend(str):
  File "/root/miniconda3/envs/et_qnn/lib/python3.10/site-packages/torch/distributed/distributed_c10d.py", line 285, in Backend
    XCCL: ProcessGroup.BackendType.XCCL,
AttributeError: type object 'torch._C._distributed_c10d.BackendType' has no attribute 'XCCL'. Did you mean: 'NCCL'?

Could anyone tell me the clue how to resolve this issue?

Versions

PyTorch version: N/A
Is debug build: N/A
CUDA used to build PyTorch: N/A
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 3.31.4
Libc version: glibc-2.35

Python version: 3.10.0 (default, Mar 3 2022, 09:58:08) [GCC 7.5.0] (64-bit runtime)
Python platform: Linux-5.15.0-91-generic-x86_64-with-glibc2.35
Is CUDA available: N/A
CUDA runtime version: 12.2.140
CUDA_MODULE_LOADING set to: N/A
GPU models and configuration:
GPU 0: NVIDIA GeForce RTX 3090
GPU 1: NVIDIA GeForce RTX 3090
GPU 2: NVIDIA GeForce RTX 3090
GPU 3: NVIDIA GeForce RTX 3090
GPU 4: NVIDIA GeForce RTX 3090
GPU 5: NVIDIA GeForce RTX 3090
GPU 6: NVIDIA GeForce RTX 3090
GPU 7: NVIDIA GeForce RTX 3090

Nvidia driver version: 525.147.05
cuDNN version: Probably one of the following:
/usr/lib/x86_64-linux-gnu/libcudnn.so.8.9.5
/usr/lib/x86_64-linux-gnu/libcudnn_adv_infer.so.8.9.5
/usr/lib/x86_64-linux-gnu/libcudnn_adv_train.so.8.9.5
/usr/lib/x86_64-linux-gnu/libcudnn_cnn_infer.so.8.9.5
/usr/lib/x86_64-linux-gnu/libcudnn_cnn_train.so.8.9.5
/usr/lib/x86_64-linux-gnu/libcudnn_ops_infer.so.8.9.5
/usr/lib/x86_64-linux-gnu/libcudnn_ops_train.so.8.9.5
HIP runtime version: N/A
MIOpen runtime version: N/A
Is XNNPACK available: N/A

CPU:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 46 bits physical, 57 bits virtual
Byte Order: Little Endian
CPU(s): 112
On-line CPU(s) list: 0-111
Vendor ID: GenuineIntel
Model name: Intel(R) Xeon(R) Gold 6348 CPU @ 2.60GHz
CPU family: 6
Model: 106
Thread(s) per core: 2
Core(s) per socket: 28
Socket(s): 2
Stepping: 6
CPU max MHz: 3500.0000
CPU min MHz: 800.0000
BogoMIPS: 5200.00
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 invpcid_single intel_ppin ssbd mba ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb intel_pt avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local split_lock_detect wbnoinvd dtherm ida arat pln pts hwp hwp_act_window hwp_epp hwp_pkg_req avx512vbmi umip pku ospke avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg tme avx512_vpopcntdq la57 rdpid fsrm md_clear pconfig flush_l1d arch_capabilities
Virtualization: VT-x
L1d cache: 2.6 MiB (56 instances)
L1i cache: 1.8 MiB (56 instances)
L2 cache: 70 MiB (56 instances)
L3 cache: 84 MiB (2 instances)
NUMA node(s): 2
NUMA node0 CPU(s): 0-27,56-83
NUMA node1 CPU(s): 28-55,84-111
Vulnerability Gather data sampling: Mitigation; Microcode
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Mitigation; Clear CPU buffers; SMT vulnerable
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Enhanced IBRS, IBPB conditional, RSB filling, PBRSB-eIBRS SW sequence
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected

Versions of relevant libraries:
[pip3] executorch==0.5.0a0+57d86d7
[pip3] numpy==1.21.3
[pip3] torch==2.6.0+cpu
[pip3] torchao==0.8.0
[pip3] torchaudio==2.6.0+cpu
[pip3] torchsr==1.0.4
[pip3] torchvision==0.21.0+cpu
[conda] executorch 0.5.0a0+57d86d7 pypi_0 pypi
[conda] numpy 1.21.3 pypi_0 pypi
[conda] torch 2.6.0+cpu pypi_0 pypi
[conda] torchao 0.8.0 pypi_0 pypi
[conda] torchaudio 2.6.0+cpu pypi_0 pypi
[conda] torchsr 1.0.4 pypi_0 pypi
[conda] torchvision 0.21.0+cpu pypi_0 pypi