Computers and software • Re: Problem in CosmoMC with mpirun
Hello Prof. Lewis,Sorry for replying to an old thread - I was wondering if this is still an issue now? i.e. Is it still recommended that we use intel before 2019 to use mpirun?For some context, we’re...
View ArticleConferences and meetings • "The Cosmic Dawn", CNRS thematic school,...
We are pleased to announce the CNRS thematic School « The Cosmic Dawn » to be held October 5th - 11th, 2025 at Institut d’Études Scientifiques de Cargèse (IESC), France.It aims to bring together...
View ArticleComputers and software • Set a prior to the inverse of a sampled parameter
I want to set a prior to the inverse of the effective sterile neutrino mass. Would this be the correct way to add the prior in the .yaml file? Code: params: meffsterile: latex: m_\mathrm{effst}...
View ArticleComputers and software • Re: Set a prior to the inverse of a sampled parameter
Follow the pattern of getting As from sampled logA, e.g.Code: logA: prior: min: 1.61 max: 3.91 ref: dist: norm loc: 3.05 scale: 0.001 proposal: 0.001 latex: \log(10^{10} A_\mathrm{s}) drop: true As:...
View ArticleComputers and software • MCMC.f90: Couldn't start after 1000 tries
camb can be executed correctly after modification, but when running the chain, an error is reported, MCMC.f90: Couldn't start after 1000 tries - check starting ranges, I don't know what the reason...
View ArticleComputers and software • CosmoMC: Using external correlation functions/matrices
I have an indexed correlation function/matrix in units of [math]h^{-1} \text{ Mpc} and its associated power spectrum, and would like to know how I can use it as the sample data in CosmoMC instead of...
View ArticleComputers and software • Clarification on Perturbation Variables in CAMB's...
Hello everyone,I'm currently studying CAMB's perturbation equations (in equations.f90) and have a few clarifying questions:1. The Fractional Density Perturbations:What exactly are the fractional...
View ArticleComputers and software • Re: Clarification on Perturbation Variables in...
The CAMB notes define most thingshttps://cosmologist.info/notes/CAMB.pdfThe transfer function is just a definition (including Lambda would be odd as it would change the order of magnitude of the power...
View ArticleComputers and software • GetParams with same output as SampleDict
Hi, I have notice that the function GetParams from the GetDist library only returns the values that have been simulated in a MCMC, but not those which had been added as priors with no variations. For...
View ArticleComputers and software • Re: GetParams with same output as SampleDict
Can try MCSamples.ranges.fixedValueDict()Statistics: Posted by Antony Lewis — March 27 2025
View ArticleComputers and software • The MCMC does not start properly.
camb can be executed correctly after modification, but when running the chain, an error is reported, MCMC.f90: Couldn't start after 1000 tries - check starting ranges, I don't know what the reason...
View ArticleComputers and software • Re: The MCMC does not start properly.
Can try building and running with Debug option.If you ran with Cobaya instead, you could use --debug option to see output of parameters being tried and what the likelihood being returned...
View ArticleCosmoCoffee • Re: Can not register, username problem
Are you using "Ronaldo Batista" as the username?Statistics: Posted by Antony Lewis — March 31 2025
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