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Hello, I have a question about the number of iterations for precision. #180
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Please try to remove the line |
What is the purpose of the PreCG parameter, and why does it have such a big impact? |
https://www.sciencedirect.com/science/article/pii/S001046552400016X?via%3Dihub In general, preconditioning is effective when the diagonal term of Hamiltonian is large (see Fig. 5), |
In the model below, I set Lanczos_max to 8000, but it still doesn't converge. What could be the reason for this? How should I resolve this issue? In regular training, is it better to have a larger Lanczos_max? Does it affect the runtime?
calcmod.txt
greenone.txt
greentwo.txt
interAll.txt
kitaev-heisenberg_137513.txt
locspn.txt
modpara.txt
namelist.txt
Ztrans.txt
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