A while ago I wanted to run a quantitative genetic analysis where the performance of genotypes in each site was considered as a different trait. If you think about it, with 70 sites and thousands of genotypes one is trying to fit a 70x70 additive genetic covariance matrix, which requires 70*69/2 = 2,415 covariance components.… Continue reading Bivariate linear mixed models using ASReml-R with multiple cores