Computers and software • Re: mpirun exceeds requested CPU usage
On the mpirun level I tried the mapping parameter:Code: mpirun --map-by slot:PE=1 -n 8 cobaya-run test.yamlbut CAMB still exceeds the limits.Statistics: Posted by Christian Neissner — September 18 2024
View ArticleComputers and software • Re: Cobaya: How to use tabulated w(a) from CAMB?
No, the sound speed in CAMB defined by the fluid rest-frame $c_s^2=\delta P/\delta \rho$, which is 1 for quintessence models. You can separately change it to a different constant (or modify the code...
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Computers and software • GetDist : parameter statistics table
With getdist-gui, in the sample likelihood constraints panel, I got a very strange upper and lower bound. The lower bound value is bigger than best fit value, while the upper bound value is a abnormal...
View ArticleComputers and software • Re: GetDist : parameter statistics table
Marginalized constraints: These values are obtained by marginalizing the posterior probability distribution, representing the uncertainty of the parameters. The calculation considers the entire...
View ArticleJob vacancies • Postdoctoral position in Theoretical Cosmology/Astroparticle...
The cosmology and astroparticle theory group in the Physics Department at Simon Fraser University invites applications for postdoctoral positions with a starting date in September, 2025. This includes...
View ArticleComputers and software • CAMB: matter power spectrum from interpolator and...
Hi, I am using CAMB version 1.5.8 and seeing small differences in the matter power spectrum obtained from transfer function `get_matter_transfer_data` (using the formula P_k =...
View ArticleComputers and software • Re: CAMB: matter power spectrum from interpolator...
My guess is you want ns-1 not ns, and factor of h somewhereStatistics: Posted by Antony Lewis — October 04 2024
View ArticleComputers and software • Could not find random point giving finite posterior...
Hello everyone!In this my first time running cobaya for a cosmological likelihood. I want to get the plot Omega_m vs Omega_dark energy. I am goint to describe my steps:I got my measured Cls from a...
View ArticleComputers and software • Re: Could not find random point giving finite...
Just with --debug to get more detailed trace. (your likelihood seems not to use any error model)Statistics: Posted by Antony Lewis — October 09 2024
View ArticleComputers and software • Re: CAMB: fixing sigma8
Hi, I am facing the same problem. I tried the above solution. However, it gives me errors like error halofit. How can I solve this issue? Thanks,ThaherStatistics: Posted by Thaher Chowdhury — October...
View ArticleComputers and software • Re: CAMB: Modifications for Altered Background Dynamics
Thank you so much for your helpful response!To clarify my original question, I was specifically looking for where `grho_no_de` is defined in the CAMB source code. I’ve since located it in...
View ArticleJob vacancies • Postdoctoral positions in Cosmology at Univeristy of Oslo
One or two positions as Postdoctoral Research Fellow are available at the Institute of Theoretical Astrophysics.Starting date as soon as possible.The appointments are full time positions. The first...
View ArticleComputers and software • CosmoMC: Adding rd as a prior
Hello,I'm trying to add r_drag measurement as a prior in CosmoMC. I just followed the recipe of the priors baryon_density.ini [omegabh2] or theta.ini [theta], However, it doesn't work properly. In...
View ArticleComputers and software • Re: CosmoMC: Adding rd as a prior
To put a prior on r_drag directly seehttps://cobaya.readthedocs.io/en/latest/params_prior.html#priors-on-theory-derived-parametersStatistics: Posted by Antony Lewis — November 05 2024
View ArticleJob vacancies • Postdoctoral Fellowship in the HEPCAT Group at the University...
The High Energy Physics, Cosmology & Astrophysics Theory (HEPCAT) group in the Department of Mathematics and Applied Mathematics at the University of Cape Town (UCT) invites applications for a...
View ArticleComputers and software • About Including Reheating e-Fold Duration in Cobaya
Dear Antony,I hope this message finds you well.I am reaching out to inquire whether it is possible to incorporate variations in the duration of reheating e-folds as an input parameter in the Cobaya...
View ArticleComputers and software • Re: About Including Reheating e-Fold Duration in Cobaya
If you have a Theory model where that is a parameter, then sure. The default CMB codes use phenomenological parameters, so do not need a reheating parameter.Statistics: Posted by Antony Lewis —...
View ArticleComputers and software • Quintessence module
Dear all,I have a question about the default oscillating quintessence module introduced in DarkEnergyQuintessence.90. If I want to use this module in CosmoMC, is it necessary to define a constraint...
View ArticleComputers and software • Re: Quintessence module
I don't think so, in CAMB normally omv calculated from density parameters and you just need to make sure your model gives an energy density today consistent with that. I've not thought about CosmoMC...
View ArticleComputers and software • CAMB: minimum value of k for calculating angular...
For a cosmological model, I have data for the power spectrum corresponding to each k. I am feeding CAMB code with this set of data as:---------------------# computing the TT power spectrum by feeding...
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