dtt_svd error
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- Dominant language
- Python
- Stars
- 264
- Forks
- 73
- PR merge metrics
- No merged PRs in 30d
Description
When constructing a TT matrix from an Hamiltonian operator with a very large number of degrees of freedom the norm of the matrices passed to the QR factorization routine becomes too large.
The error can be reproduced using the attached code.
Raffaele
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the attached tt-tfd.py.gz reproduction and trace the dtt_svd path into the QR factorization routine. Determine where the large norm causes the error; done should mean the reported large-degree-of-freedom Hamiltonian construction completes without that failure.
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Assessment
- Tech stack
- python
- Domain
- data
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100