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- 18 Jul 2024, 06:08
- Forum: HowTos and FAQ for TeNPy
- Topic: Why is finite DMRG running so slowly?
- Replies: 1
- Views: 50396
Why is finite DMRG running so slowly?
Hi! I want to use Tenpy to find the ground state and first excited state energies. However, DMRG is running very slowly. For small system sizes, it is even slower than exact diagonalization! (~25 seconds for 10 spins; ~145 seconds for 12 spins.) My model is an Ising-type spin model with nearest and ...