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[ITensorGPU] [BUG] DMRG not working with Observer

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**Description of bug** without a DMRGObserver object my code works on the GPU, however I want to early stop depending on some tolerance on the energy. For this I used...

unnormalized MPS after DMRG when getting samples in multithread mode

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# Problem Hi @GTorlai, I am trying to use your code with ITensors.jl to compute the groundstate of a 2D Heisenberg model and obtain random pauli measurements from it. The...

# Description I added a small example on how to construct the GHZ state as an MPS and how to check the correctness of the construction by comparing the contracted...

How to utilize multigpus?

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Hi thank you for the awesome library! Everything works fine and was easy to install. However I have a multi-gpu system where I want to run ripser on a large...