PyUIT

Python wrapper for DoD HPCMP UIT+ REST interface

INSTALL

conda install:

conda install -c erdc/label/dev -c conda-forge pyuit

development install:

git clone https://github.com/erdc/pyuit.git
cd pyuit
conda env create -f environment.yml
conda activate uit
pip install -e .

CONFIGURE

For PyUIT to communicate with the UITP+ REST API you must first register a client application on the UIT+ site (refer to the UIT+ docs for more details). When registering the client application you should select Web Application for "Client Type", and use the following URL as the "Return URL":

http://localhost:5000/save_token

Once you have registered a client application you should have a Client ID and a Client Secret. You need to use these two keys to configure PyUIT locally.

There are three ways that you can configure PyUIT to use the Client ID and the Client Secret. PyUIT search for these keys in this order:

1. Pass in the keys using the client_id and client_secret key word arguments to the Client constructor

from uit import Client

c = Client(client_id='<YOUR_CLIENT_ID>', client_secret='<YOUR_CLIENT_SECRET>')

2. Set the UIT_ID and UIT_SECRET environmental variables

If the client_id or the client_secret are not passed into the Client when it is instantiated, then it will next look for those values from environmental variables. On UNIX systems you can set the environmental variables as follows:

export UIT_ID="<YOUR_CLIENT_ID>"
export UIT_SECRET="<YOUR_CLIENT_SECRET>"

3. Store the keys in a :file:`~/.uit` configuration file

If the Client does not receive they Client ID and Client Secret keys from either the key word arguments or environmental variables it will finally look in a configuration file. By default it will look for a configuration file in the user's home directory called :file:`.uit`. The file should look like this:

client_id: <YOUR_CLIENT_ID>
client_secret: <YOUR_CLIENT_SECRET>

If you have a configuration file located somewhere other than :file:`~/.uit` then you either need to specify the path in the UIT_CONFIG_FILE environment variable or pass the path to the file into the Client constructor:

export UIT_CONFIG_FILE="/path/to/your/uit/config/file"
c = Client(config_file="/path/to/your/uit/config/file")

PyUIT comes with a default specification of the nodes types for the DSRC HPC systems which should work in most situations. In the rare event that the default is not sufficient, it can be overridden by specifying a custom file in the :file:`~/.uit` configuration file or by defining a UIT_NODE_TYPES_FILE environment variable:

node_types_file: /path/to/your/node_types/file
export UIT_NODE_TYPES_FILE="/path/to/your/node_types/file"

The file should be a CSV file with a header row specifying the system and then the node types and value rows specifying the system and then number of cores on each node type. For example:

system,compute,gpu,bigmem,transfer,mla,highclock
nautilus,128,128,128,1,128,32

The dodcerts library is used to provide the default Certificate Authority bundle. If a custom certificate bundle file is required it can be specified in the :file:`~/.uit` configuration file or by using the UIT_CA_FILE environment variable. It can also be passed into the Client constructor:

ca_file: /path/to/custom/dod/ca/bundle
export UIT_CA_FILE="/path/to/custom/dod/ca/bundle"
c = Client(ca_file="/path/to/custom/dod/ca/bundle")

CONDA BUILD

conda build -c erdc -c conda-forge conda.recipe