adding total number of time steps in file sent to themis
working if recalculating the size of all blocks in process 0
asynchrounous refresh stencil otherwise send are stuck
timer en clair, affichage systematique des 3 1er pas
fixing total time step printed?
running fine with -O2 but not with -O3
debugging problem in zdac:665 with -O3 on claui2t0
meilleure prise en compte de checkpoint_now