Monitoring introduction + PerfMC section
Merge pull request #2 from walafc0/walafc0

Add part1.tex
Almost finished monitoring part. TODO : erci's part
Added eric's file, not finished yet
Modified monitoring part to fit with prof advices, still spell check to do on it. Modified eric part fixed è and à problem, still spell check to do.
Merge branch 'walafc0' of github.com:walafc0/PSAR-Docs into walafc0
y a plus qu'a relire normalement