lesgourg / class_public

Public repository of the Cosmic Linear Anisotropy Solving System (master for the most recent version of the standard code; GW_CLASS to include Cosmic Gravitational Wave Background anisotropies; classnet branch for acceleration with neutral networks; ExoCLASS branch for exotic energy injection; class_matter branch for FFTlog)
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ndf15 estimating tolerance #468

Open GiorgiArsenadze opened 2 years ago

GiorgiArsenadze commented 2 years ago

Hi! I have been trying to use ndf15. However it seems that if I change tolerance entry in the ndf15 it effects the solutions a great deal. Also if I change parameters in equation I have to change tolerance to get at least close to the true solution. Is there a way to estimate tolerance for given parameters of equation to get correct solution? Sorry for this question this is less of a ndf15 issue and more of my lack of understanding but maybe you might know something that can help. Thank you in advance!