Improve contract performance - Githubissues

CQCL / pytket-cutensornet

cuTensorNet Python API extensions for pytket quantum SDK

Apache License 2.0

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Improve contract performance #36

Closed PabloAndresCQ closed 8 months ago

PabloAndresCQ commented 8 months ago

This PR changes the way cq.contract is called across mps.py, mps_gate.py and mps_mpo.py so that:

Handles of library and device are always passed to them as arguments.
When doing a contraction of a small number of tensors, the explicit contraction path is given.

A subset of these changes (in particular, those applying to vdot increased the performance of Mekena's use case on GCP).