Set fdmrg max sites to 2 to speed up initialization
Set fdmrg max sites to 2 to speed up initialization


Former-commit-id: d62797aa7771364ec825e8f5542aad2dc1efeb65
DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG