The checkpoint folders for project tasks are saved by default in /home/user. How do I save these folders to a different location? I need to define in the model.xml file an operator of the kind Op=\sum exp(i\theta n) or Op=i*sin(\theta) where \theta may take value different from pi or pi/2. Do I need to change any parameter in alps to use such operator in alps_mps_optim. Best regards, Henry K. Otobrise, Dept. Of Physics OAU, Ile-Ife, Nigeria