The DEISA (distributed European infrastructure for supercomputing applications) project will hold a symposium on high performance computing in Paris, France, on 9 and 10 May. The purpose of the event is to provide a forum for the discussion of scientific and strategic challenges in the field of high performance computing, and to assess the impact of DEISA on computational science in Europe. Leading computational scientists will discuss topics such as material sciences, climate modelling, astrophysics, aeronautical engineering, bio-informatics, quantum chromodynamics, plasma physics and quantum chemistry. For further information, please consult the following web address: deisa.org/symposium,