The MareNostrum Universe is one of the largest cosmological SPH simulation
done so far. This nonradiative simulation consists of 1024^3 dark and 1024^3
gas particles in a box of 500 h-1 Mpc on a side. I will present some
ongoing projects and first results obtained from this simulation. In
particular I will discuss baryonic oscillations, the shapes and spins of the
dark matter and gas components of the 10,000 clusters and groups extracted
from the simulation as well as the baryonic fraction in those objects and
the expected radio emission of massive clusters.