Fig 4. Illustration of likelihood evaluation for HKY model and IS model on GPU.

CPU memory denote the RAM of computer. (A) S denote the sequences used for analyses, π denote the base frequencies of nucleotide, CL denote the conditional likelihood for non-leaf nodes in phylogenetic tree, CL(root) denote the conditional likelihood for root node in phylogenetic tree, SL denote the site likelihoods for root node, BL denote the block likelihood for root node and GL denote the global likelihood. (B) S denote the sequences used for analyses, T denote the phylogenetic tree, t denote the branch length, M denote the number of mutations, BT denote total branch length for phylogenetic tree, SL denote the site likelihoods for root node, BL denote the block likelihood for root node and GL denote the global likelihood.