Issue with outputlevel=2 in tdvp Producing the Same Output as outputlevel=1

ITensor Julia Questions
1

I have tried setting outputlevel=2 in tdvp, but it produces the same output as outputlevel=1. This option works correctly in dmrg.
My versioninfo:

(@v1.10) pkg> status "ITensors"
Status `C:\Users\swan\.julia\environments\v1.10\Project.toml`
  [9136182c] ITensors v0.6.11

(@v1.10) pkg> status "ITensorMPS"
Status `C:\Users\swan\.julia\environments\v1.10\Project.toml`
  [0d1a4710] ITensorMPS v0.2.4

(@v1.10) pkg> status "ITensorTDVP"
Status `C:\Users\swan\.julia\environments\v1.10\Project.toml`
  [25707e16] ITensorTDVP v0.4.4

julia> VERSION
v"1.10.4"

Minimal example is from ITensorMPS.jl/examples/01_tdvp.jl at main · ITensor/ITensorMPS.jl (github.com).

The reason I need the information at each site is that I’m calculating a rather challenging (long-range) model which is extremely sensitive to the initial state. I want to apply tdvp to perform the imaginary time evolution as a warm-up and then proceed with DMRG. However, the tdvp is extremely slow and even fails when combining QNs due to attempting to factorize/exponentiate a matrix containing NaNs/Infs. But whatever, these questions may come as some follow-up posts.

2

Thanks and good catch, I’ve opened a PR for it here
In the meantime you can modify your own copy to add that missing line

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