Kaldi_CU

Kaldi recipe for CU Kids Speech Corpus data model building

Steps: Make sure kaldi is installed first before proceeding.

1. Download the CU Kids Speech Corpus dataset
2. In s5/run.sh modify CU_ROOT to point to the main directory of the dataset
3. ./run.sh This will build the HMM-GMM model
4. After completed successfully run local/nnet3/run_tdnn_delta.sh for the TDNN model THe script s5/clean.sh will remove file created from s5/run.sh so that you can train the models again.

Install Kaldi: Refer to: https://kaldi-asr.org/doc/tutorial_setup.html

1. git clone https://github.com/kaldi-asr/kaldi.git
2. Look at the kaldi/INSTALL file and follow the instructions there
3. Download SRILM by running kaldi/tools/install_srilm.sh

Initialising katana:

To execute the steps using the supercomputer katana.

1. ssh [email protected] in terminal. Or, use the alias katana.
2. Create a new screen using screen -S nameOfSession.
3. Request an interactive GPU node using qsub -I -l select=1:ngpus=2:ncpus=16:mem=80gb,walltime=10:00:00. Once the node is ready, you are now in the node. The terminal will show (zID@kxxx), where kxxx is your node.
4. Now you are inside the screen, and inside the GPU node. Run whatever process you need.
5. Load modules by running

module load cuda/10.1
module load python/3.6.5
module load intel/19.0.0.117
module load sox/14.4.2

Note: If there is an error message saying Permission Denied when running a script, use chmod u+x -R /path/to/directory to change the permissions of all the files in the directory so that you have permission to execute.

To install any python packages not in katana, use a virtual environment: https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/ The virtual environment I am using currently is kaldi/egs/Kaldi_CU source Kaldi_CU/bin/activate Includes num2words package.

Leaving katana Asumming you are inside a screen, and inside a requested GPU node.

1. CtrlA D to detach from the screen session.
2. exit to logout of the katana session.

Returning to katana

1. ssh [email protected] in terminal. Or, use the alias katana.
2. Go back to your screen screen -r nameOfSession eg. screen -r ogi

Useful katana screen things

• To create a new window (tab) within a screen, use CtrlA C
• To go to next and previous windows, use CtrlA N and CtrlA P respectively.
• To check if you are in a screen, type the command echo $TERM