It's a limitation because the codes are not optimized for very few particles - it essentially builds up the full Hilbert space of fermions on 32 sites (2^64 states) and filters out your few states. What are the target numbers of particles that you aim for?
Matthias
On Nov 25, 2011, at 1:37 PM, Volodymyr Derzhko wrote:
Dear Mr. Troyer,
I have another problem with a graph, which consists of 32 sites. fulldiag works perfectly with smaller graphs (8 and 18 sites) but won't with 32-sites one. I tried it under linux (command line, Vistrails) and Windows(Vistrails). There is no error, but it can't diagonalize it (time of diagonalizing is longer than several hours; I had to interrupt the process). Note, that I'm taking {N_total=1; Sz_total=1/2;}, and it's hard to believe, that it can take hours and hours to diagonalize it.
The lattice, model, and tasks files are attached.
Please, let me know what can be wrong. Probably, there is a limitation for big lattice size?
Thank you in advance, Volodymyr Derzhko <job_chb2x2pbc.txt><job_chb3x3pbc.txt><job_chb4x4pbc.txt><latt.xml><models.xml>