Top 500 Clusters
Class slides and lab manual on HPC from University of Tartu in Estonia
Slides:
https://courses.cs.ut.ee/MTAT.08.037/2014_spring/uploads/Main/slides1.pdf
https://courses.cs.ut.ee/MTAT.08.037/2014_spring/uploads/Main/slides2.pdf
https://courses.cs.ut.ee/MTAT.08.037/2014_spring/uploads/Main/slides3.pdf
https://courses.cs.ut.ee/MTAT.08.037/2014_spring/uploads/Main/slides4.pdf
https://courses.cs.ut.ee/MTAT.08.037/2014_spring/uploads/Main/slides5.pdf
https://courses.cs.ut.ee/MTAT.08.037/2014_spring/uploads/Main/slides6.pdf
https://courses.cs.ut.ee/MTAT.08.037/2014_spring/uploads/Main/slides7.pdf
Lab manuals:
https://courses.cs.ut.ee/MTAT.08.037/2015_spring/uploads/Main/Lab2.pdf
https://courses.cs.ut.ee/MTAT.08.037/2015_spring/uploads/Main/Lab3.pdf
https://courses.cs.ut.ee/MTAT.08.037/2015_spring/uploads/Main/Lab4.pdf
https://courses.cs.ut.ee/MTAT.08.037/2015_spring/uploads/Main/Lab5.pdf
https://courses.cs.ut.ee/MTAT.08.037/2015_spring/uploads/Main/Lab6.pdf
Especially the Lab6 mentioned about using Raspberry Pi to build a cluster and do topology optimization.