Le mercredi 22 janvier 2020 07:43:52 UTC+1, Mattia Villani a écrit :
>
> How to use parallelization on contraction of tensor? Consider the case I
> have two successive contraction like this:
>
> Tud=etuu['^{ab}']*eamup['^c_b']
> Tp=Tud['^{ab}']*eamup['^c_a']
>
> How con I parallelize it?
>
It suffices to type, before your code for contraction:
Parallelism().set(nproc=8)
Then the calculus of the contactions will be parallelized on 8 processes.
Of course, you can adapt the value of nproc to your computer.
An example is here
<https://nbviewer.jupyter.org/github/sagemanifolds/SageManifolds/blob/master/Notebooks/SM_Kerr.ipynb>
.
Best wishes,
Eric.
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