Genoveva Vargas-Solar, CNRS, LIG-LAFMIA, France genoveva.vargas@imag.fr, http://www.vargas-solar.com
This material initially was prepared for the Keystone Cost Network 2nd Summer School
The hands on exercises were prepared by Javier Alfonso Espinosa Oviedo, Barcelona Supercomputing Centre, Spain, javier.espinosa@bsc.es
The lecture was then thought in the Federal Institute of Rio Grande do Norte, Brazil, with the technical help of Placido A. Souza Neto
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