1. Developing Grid Applications with Ganga: A Case-Study of the
HammerCloud Stress Testing System
This tutorial will present an introduction to developing EGI grid
applications using Ganga. Ganga is most commonly used as an end-user
interface to the EGI and other grids, but its included Grid
Programming Interface (GPI) also allows application developers to
easily submit and manage jobs to the various grid backends using
Python. The tutorial will be formulated as case study of the
development of HammerCloud, a distributed analysis testing tool
employed by three HEP VOs. The tutorial will also highlight some of
the more powerful features of Ganga, such as the GangaRobot module and
how to incorporate multi-threading in your Ganga applications.

2. Using HammerCloud: A Site Stress Testing Tool for HEP VOs
HammerCloud (HC) is a distributed analysis stress testing tool that is
available for three HEP VOs: ATLAS, CMS, and LHCb. This tool enables
site and regional administrators to customize and schedule on-demand
tests of their computing facilities using typical analysis jobs drawn
from the user communities, without requiring VO-specific knowledge.
The tests sent by HammerCloud are useful to help commission new sites,
to evaluate changes to software or configurations and to benchmark
sites for comparison purposes. The results of the HammerCloud tests
are presented in a friendly web interface and users can drill down
into the results to get performance statistics and detail metrics
related to the job performance (e.g. CPU times, storage I/O times,
etc...).