for (int i = 0; i < count; i++)
blocklens[i] = blocklength;
int retval = simgrid::smpi::Datatype::create_hindexed(count, blocklens, indices, old_type, new_type);
for (int i = 0; i < count; i++)
blocklens[i] = blocklength;
int retval = simgrid::smpi::Datatype::create_hindexed(count, blocklens, indices, old_type, new_type);