update faq for libpython3.10.so not found (#838)

docs/source/conf.py

@@ -81,6 +81,9 @@ todo_include_todos = True
 
 rst_epilog = """
 .. _sherpa-ncnn: https://github.com/k2-fsa/sherpa-ncnn
+.. _icefall: https://github.com/k2-fsa/icefall
 .. _git-lfs: https://git-lfs.com/
 .. _ncnn: https://github.com/tencent/ncnn
+.. _LibriSpeech: https://www.openslr.org/12
+.. _musan: http://www.openslr.org/17/
 """

docs/source/faqs.rst

@@ -65,3 +65,43 @@ The fix is:
   pip uninstall setuptools
 
   pip install setuptools==58.0.4
+
+ImportError: libpython3.10.so.1.0: cannot open shared object file: No such file or directory
+--------------------------------------------------------------------------------------------
+
+If you are using ``conda`` and encounter the following issue:
+
+.. code-block::
+
+  Traceback (most recent call last):
+    File "/k2-dev/yangyifan/anaconda3/envs/icefall/lib/python3.10/site-packages/k2-1.23.3.dev20230112+cuda11.6.torch1.13.1-py3.10-linux-x86_64.egg/k2/__init__.py", line 24, in <module>
+      from _k2 import DeterminizeWeightPushingType
+  ImportError: libpython3.10.so.1.0: cannot open shared object file: No such file or directory
+
+  During handling of the above exception, another exception occurred:
+
+  Traceback (most recent call last):
+    File "/k2-dev/yangyifan/icefall/egs/librispeech/ASR/./pruned_transducer_stateless7_ctc_bs/decode.py", line 104, in <module>
+      import k2
+    File "/k2-dev/yangyifan/anaconda3/envs/icefall/lib/python3.10/site-packages/k2-1.23.3.dev20230112+cuda11.6.torch1.13.1-py3.10-linux-x86_64.egg/k2/__init__.py", line 30, in <module>
+      raise ImportError(
+  ImportError: libpython3.10.so.1.0: cannot open shared object file: No such file or directory
+  Note: If you're using anaconda and importing k2 on MacOS,
+        you can probably fix this by setting the environment variable:
+    export DYLD_LIBRARY_PATH=$CONDA_PREFIX/lib/python3.10/site-packages:$DYLD_LIBRARY_PATH
+
+Please first try to find where ``libpython3.10.so.1.0`` locates.
+
+For instance,
+
+.. code-block:: bash
+
+  cd $CONDA_PREFIX/lib
+  find . -name "libpython*"
+
+If you are able to find it inside ``$CODNA_PREFIX/lib``, please set the
+following environment variable:
+
+.. code-block:: bash
+
+  export LD_LIBRARY_PATH=$CONDA_PREFIX/lib:$LD_LIBRARY_PATH

docs/source/recipes/Non-streaming-ASR/librispeech/distillation.rst

@@ -1,8 +1,8 @@
 Distillation with HuBERT
 ========================
 
-This totorial shows you how to perform knowledge distillation in ``icefall`` 
-with the `LibriSpeech <https://www.openslr.org/12>`_ dataset. The distillation method
+This tutorial shows you how to perform knowledge distillation in `icefall`_
+with the `LibriSpeech`_ dataset. The distillation method
 used here is called "Multi Vector Quantization Knowledge Distillation" (MVQ-KD).
 Please have a look at our paper `Predicting Multi-Codebook Vector Quantization Indexes for Knowledge Distillation <https://arxiv.org/abs/2211.00508>`_
 for more details about MVQ-KD.
@@ -18,7 +18,7 @@ for more details about MVQ-KD.
 .. note::
 
   We assume you have read the page :ref:`install icefall` and have setup
-  the environment for ``icefall``.
+  the environment for `icefall`_.
 
 .. HINT::
 
@@ -27,13 +27,13 @@ for more details about MVQ-KD.
 Data preparation
 ----------------
 
-We first prepare necessary training data for ``LibriSpeech``. 
-This is the same as in `Pruned_transducer_statelessX <./pruned_transducer_stateless.rst>`_.
+We first prepare necessary training data for `LibriSpeech`_.
+This is the same as in :ref:`non_streaming_librispeech_pruned_transducer_stateless`.
 
 .. hint::
 
    The data preparation is the same as other recipes on LibriSpeech dataset,
-   if you have finished this step, you can skip to ``Codebook index preparation`` directly.
+   if you have finished this step, you can skip to :ref:`codebook_index_preparation` directly.
 
 .. code-block:: bash
 
@@ -61,8 +61,8 @@ For example,
 
 .. HINT::
 
-  If you have pre-downloaded the `LibriSpeech <https://www.openslr.org/12>`_
-  dataset and the `musan <http://www.openslr.org/17/>`_ dataset, say,
+  If you have pre-downloaded the `LibriSpeech`_
+  dataset and the `musan`_ dataset, say,
   they are saved in ``/tmp/LibriSpeech`` and ``/tmp/musan``, you can modify
   the ``dl_dir`` variable in ``./prepare.sh`` to point to ``/tmp`` so that
   ``./prepare.sh`` won't re-download them.
@@ -84,6 +84,8 @@ We provide the following YouTube video showing how to run ``./prepare.sh``.
 ..  youtube:: ofEIoJL-mGM
 
 
+.. _codebook_index_preparation:
+
 Codebook index preparation
 --------------------------
 
@@ -91,9 +93,10 @@ Here, we prepare necessary data for MVQ-KD. This requires the generation
 of codebook indexes (please read our `paper <https://arxiv.org/abs/2211.00508>`_.
 if you are interested in details). In this tutorial, we use the pre-computed
 codebook indexes for convenience. The only thing you need to do is to
-run ``./distillation_with_hubert.sh``. 
+run `./distillation_with_hubert.sh <https://github.com/k2-fsa/icefall/blob/master/egs/librispeech/ASR/distillation_with_hubert.sh>`_.
 
 .. note::
+
   There are 5 stages in total, the first and second stage will be automatically skipped
   when choosing to downloaded codebook indexes prepared by `icefall`_.
   Of course, you can extract and compute the codebook indexes by yourself. This
@@ -115,7 +118,7 @@ For example,
   $ ./distillation_with_hubert.sh --stage 0 --stop-stage 0 # run only stage 0
   $ ./distillation_with_hubert.sh --stage 2 --stop-stage 4 # run from stage 2 to stage 5
 
-Here are a few options in ``./distillation_with_hubert.sh`` 
+Here are a few options in `./distillation_with_hubert.sh <https://github.com/k2-fsa/icefall/blob/master/egs/librispeech/ASR/distillation_with_hubert.sh>`_
 you need to know before you proceed.
 
 - ``--full_libri`` If True, use full 960h data. Otherwise only ``train-clean-100`` will be used
@@ -151,7 +154,7 @@ following screenshot for the output of an example execution.
   set ``use_extracted_codebook=False`` and set ``embedding_layer`` and
   ``num_codebooks`` by yourself.
 
-Now, you should see the following files under the direcory ``./data/vq_fbank_layer36_cb8``.
+Now, you should see the following files under the directory ``./data/vq_fbank_layer36_cb8``.
 
 .. figure:: ./images/distillation_directory.png
   :width: 800
@@ -191,6 +194,7 @@ Here is the code snippet for training:
 
 There are a few training arguments in the following
 training commands that should be paid attention to.
+
   - ``--enable-distillation`` If True, knowledge distillation training is enabled.
   - ``--codebook-loss-scale`` The scale of the knowledge distillation loss.
   - ``--manifest-dir`` The path to the MVQ-augmented manifest.
@@ -217,4 +221,3 @@ You should get similar results as `here <https://github.com/k2-fsa/icefall/blob/
 
 That's all! Feel free to experiment with your own setups and report your results.
 If you encounter any problems during training, please open up an issue `here <https://github.com/k2-fsa/icefall/issues>`_.
-

docs/source/recipes/Non-streaming-ASR/librispeech/pruned_transducer_stateless.rst

@@ -1,3 +1,5 @@
+.. _non_streaming_librispeech_pruned_transducer_stateless:
+
 Pruned transducer statelessX
 ============================