Python Version Conflict in Installation Instructions

[haolingke]

The Problem
The README specifies two conflicting Python versions:
Section (1) instructs creating a Python 3.9.19 environment:
conda create -n Nav-R2-evaluation python=3.9.19
Section (2) provides a flash_attn wheel compiled for Python 3.10:
pip install environment-modules-customed/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp310-cp310-linux_x86_64.whl

The cp310 in the filename indicates this wheel is built for Python 3.10 and cannot be installed in a Python 3.9 environment.

(test) llh@llhWs:~/NavR2/Nav-R2$ pip install environment-modules-customed/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp310-cp310-linux_x86_64.whl
Looking in indexes: https://mirrors.osa.moe/pypi/web/simple
ERROR: flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp310-cp310-linux_x86_64.whl is not a supported wheel on this platform.
(test) llh@llhWs:~/NavR2/Nav-R2$ python --version
Python 3.9.19

My system is Ubuntu22.04,and I installed this ehl successfully in my 3.10 conda environment.
(Nav-R2-evaluation) llh@llhWs:~/NavR2/Nav-R2$ conda list | grep flash flash-attn 2.7.4.post1 pypi_0 pypi (Nav-R2-evaluation) llh@llhWs:~/NavR2/Nav-R2$ python --version Python 3.10.19

Questions
Should the conda environment be created with Python 3.10 instead of 3.9.19?
Or should a Python 3.9 compatible version of flash_attn be provided?
Are the customized habitat-lab and habitat-baselines compatible with Python 3.10?

[haolingke]

I try the conda environment be created with Python 3.10 is ok

Thanks for your reply!
Have you repeated the train or test experiments in Python 3.10? And what's your habitat version?
Really appreciated as I'm troubled in the environment set.

[WZX0Swarm0Robotics]

I only attempted the evaluation part of the code, and I managed to get it running successfully. However, there were some issues with the environment configuration provided by the author, so I used the following setup instead:

1. create conda environment
   conda create -n Nav-R2-evaluation python=3.9
conda activate Nav-R2-evaluation
pip install -r requirements-for-evaluation-on-OVON.txt

2. Install flash_attn
   you can download flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp39-cp39-linux_x86_64.whl in https://github.com/Dao-AILab/flash-attention/releases/ ,

and then install it

pip install environment-modules-customed/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp39-cp39-linux_x86_64.whl

3. Install habitat-sim 0.3.1
   conda install habitat-sim=0.3.1 withbullet headless -c conda-forge -c aihabitat

4. Install extra libraries
   pip install -e environment-modules-customed/transformers_4.51.3-xwt-customed/transformers
pip install -e environment-modules-customed/habitat-related/ovon/habitat-lab
pip install -e environment-modules-customed/habitat-related/ovon/habitat-baselines

5. you need to replace the following code at line 12 of Nav-R2/Nav-R2-evaluation-ovon/ovon/task/simulator.py:

self.recompute_navmesh(self.pathfinder, navmesh_settings, include_static_objects=True)

with this

self.recompute_navmesh(self.pathfinder, navmesh_settings)

[WZX0Swarm0Robotics]

if you run it successfully, you can see this:

[haolingke]

thank you very much!Really appreciate for your help,I have run it successfully!

Addtionally, I notice that the HM3D-scenes_dir dataset downloaded at [https://www.modelscope.ai/datasets/XiangWentao666/Nav-R2-hm3d-scenes-dir/files] from [ModelScope] lack some data(00810-CrMo8WxCyVb) which may influence the test.
AssertionError: ESP_CHECK failed: No Stage Attributes exists for requested scene ... .../hm3d/val//00810-CrMo8WxCyVb/CrMo8WxCyVb.basis.glb does not correspond to any existing file...
Have you ever met this problem?

[WZX0Swarm0Robotics]

thank you very much!Really appreciate for your help,I have run it successfully!

Addtionally, I notice that the HM3D-scenes_dir dataset downloaded at [https://www.modelscope.ai/datasets/XiangWentao666/Nav-R2-hm3d-scenes-dir/files] from [ModelScope] lack some data(**00810-CrMo8WxCyVb**) which may influence the test. `AssertionError: ESP_CHECK failed: No Stage Attributes exists for requested scene ... .../hm3d/val//00810-CrMo8WxCyVb/CrMo8WxCyVb.basis.glb does not correspond to any existing file...` Have you ever met this problem?

you can download full datasets in this url https://github.com/facebookresearch/habitat-sim/blob/main/DATASETS.md

[Beatlesso]

thank you very much!Really appreciate for your help,I have run it successfully!

Addtionally, I notice that the HM3D-scenes_dir dataset downloaded at [https://www.modelscope.ai/datasets/XiangWentao666/Nav-R2-hm3d-scenes-dir/files] from [ModelScope] lack some data(**00810-CrMo8WxCyVb**) which may influence the test. `AssertionError: ESP_CHECK failed: No Stage Attributes exists for requested scene ... .../hm3d/val//00810-CrMo8WxCyVb/CrMo8WxCyVb.basis.glb does not correspond to any existing file...` Have you ever met this problem?

I also encountered similar problems:

Traceback (most recent call last):
  File "/home/admin/workspace/congshen/Nav-R2/Nav-R2-evaluation-ovon/run_qwen_ovon.py", line 137, in <module>
    main()
  File "/home/admin/workspace/congshen/Nav-R2/Nav-R2-evaluation-ovon/run_qwen_ovon.py", line 71, in main
    run_exp(**vars(args))
  File "/home/admin/workspace/congshen/Nav-R2/Nav-R2-evaluation-ovon/run_qwen_ovon.py", line 123, in run_exp
    evaluate_agent_ovon(config, split_id, dataset_split, model_path, result_path, use_unified_prompt = use_unified_prompt)
  File "/home/admin/workspace/congshen/Nav-R2/Nav-R2-evaluation-ovon/agent/citywalker_agent.py", line 111, in evaluate_agent_ovon
    env = Env(config, dataset)
  File "/home/admin/workspace/congshen/Nav-R2/environment-modules-customed/habitat-related/ovon/habitat-lab/habitat/core/env.py", line 114, in __init__
    self._sim = make_sim(
  File "/home/admin/workspace/congshen/Nav-R2/environment-modules-customed/habitat-related/ovon/habitat-lab/habitat/sims/registration.py", line 19, in make_sim
    return _sim(**kwargs)
  File "/home/admin/workspace/congshen/Nav-R2/Nav-R2-evaluation-ovon/ovon/task/simulator.py", line 10, in __init__
    super().__init__(config)
  File "/home/admin/workspace/congshen/Nav-R2/environment-modules-customed/habitat-related/ovon/habitat-lab/habitat/sims/habitat_simulator/habitat_simulator.py", line 283, in __init__
    super().__init__(self.sim_config)
  File "<attrs generated methods habitat_sim.simulator.Simulator>", line 40, in __init__
  File "/mnt/data/miniconda3/envs/Nav-R2-evaluation/lib/python3.9/site-packages/habitat_sim/simulator.py", line 118, in __attrs_post_init__
    self.__set_from_config(self.config)
  File "/mnt/data/miniconda3/envs/Nav-R2-evaluation/lib/python3.9/site-packages/habitat_sim/simulator.py", line 269, in __set_from_config
    self._config_backend(config)
  File "/mnt/data/miniconda3/envs/Nav-R2-evaluation/lib/python3.9/site-packages/habitat_sim/simulator.py", line 200, in _config_backend
    super().__init__(config.sim_cfg, config.metadata_mediator)
AssertionError: ESP_CHECK failed: Missing (at least) one of scene dataset attributes, stage attributes, or dataset scene attributes for scene '/home/admin/workspace/datasets/Nav-R2-eval/Nav-R2-hm3d-scenes-dir/hm3d-scenes_dir/hm3d/val//00848-ziup5kvtCCR/ziup5kvtCCR.basis.glb'.  Likely an invalid scene name.