OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of compute technologies. APSR – an efficient parallel random resource management algorithm that requires information only from a small number of hosts and dynamically adjusts the degree of parallelism to provide provable decline ratio guarantees

Implementation copywriter: Or Peres - pereo@post.bgu.ac.il ,Liron Cohen- cohenlir@post.bgu.ac.il

This is implementation of article "Parallel Virtual Machine Placement with Provable Guarantees" Supervisors: Dr. Scalosub Gabriel Dr. Einziger Gil

Note: APSR scheduler replace the filter schedulers

Get Started: ---------

1. Start by cloning this project.

2. Run scripts

0-prepare.sh

This command is to prepare the installed OpenStack environment before the 1st benchmarking. It replace the nova code to support the APSR vertion. The scrip also create the configuration file.

1-run_APSR.sh

This start the APSR controller

Configuration File: ---------You can find all APSR configuration at - /etc/nova/APSR_CONFIG.txt

[DEFAULT]

#determine how often the APSR controller will work

INTERVAL_SIZE = 10

# parameters for APSR algorithm estimate K factor

ALPHA = 0.1

# APSR's target decline ratio (0.1)

EPSILON = 0.1

# Set the APSR type, 0 - APSR , 1- APSR AVG

TYPE = 0

#Budget for overall number of queries

BUDGET_SIZE = 100

#APSR is allow to open up to MAX_SCHDULERS schedulers

MAX_SCHDULERS = 100

In order to debug the project you can use-

• APSR log file - /lib/python2.7/site-packages/nova/APSR_CONTROLLER.log

* Nova logs - /var/log/nova/* README.rst