I'm currently involved in the organization/program committees of several conferences, including:

• Europar (I've organized the conference in Pisa, in 2004)
• PDP Euromicro (we've organized the conference in Pisa, Feb 2010)
• PARCO
• CoreGRID Symposium (last “official” Symposium was in Gran Canaria (E), after the end of the EU NoE, we started an ERCIM WG that run a workshop in Delft, associated to EuroPar'09)

We organized in Pisa Euromicro PDP 2010, the 18th Euromicro Conference on Parallel, Distributed and Network-Based Computing (PDP 2010 web site)

• Euromicro PDP'09
• IPDPS'09 IEEE International Parallel and Distributed Processing Symposium
• Workshop on large scale processing (with IPDPS'09)
• CCGrid'09 9th IEEE International Symposium on Cluster Computing and the Grid, May 2009, Shanghai, China
• LSPP'09 Workshop on Large-Scale Parallel Processing 2009 (with IPDPS'09)
• International Workshop on Advanced Topics in Mobile Computing for Emergency Management: Communication and Computing Platforms (MCEM 2009)

• HPDC 2008
• CBHPC'2008
• IPDPS 2008
• ServiceWave 2008
• Euromicro PDP 2008
• EuroPar 2008
• CoreGRID Symposium 2008

I also participate reviewing papers for several journals, including

• Parallel computing (Elsevier)
• IEEE Transactions on Parallel and Distributed Systems
• Future Generation Computer Systems (Elsevier)