LUTF High Level Design

Introduction

Objectives 

This High Level Design Document describes the current LUTF design, code base, infrastructure requirements for its setup and the new features that can be added on top of the current design.

Reference Documents

Document Structure

This document is made up of the following sections:

Design Overview: Describes the existing infrastructure, code base and components of LUTF.

Setup and Usage: Describes how to setup and run LUTF on test nodes.

New Features: Describes the new features to be added to the current design.

LUTF Design Overview

The below diagram shows how LUTF interacts with LNet

Figure 1: System Level Diagram

LUTF Master-Agent

 The LUTF is designed with a Master-Agent approach to test LNet. The Master and Agent LUTF instance uses a telnet python module to communicate with each other and more than one Agent can communicate with single Master instance at the same time. The Master instance controls all the Agents connected to it. It controls the execution of the python test scripts to test LNet on Agent instances, collects the results of all the tests run on Agents and write them to a YAML file. It also controls the synchronization mechanism between test-scripts running on different Agents.

SWIG & DLC Library

SWIG is used to wrap the DLC library and make it callable from Python. This allows Python test scripts to call DLC APIs directly to test LNet