Hi, I ask myself what would be the better config to run graph tool easily with large graphs (made from 5.10^5 square sparse correlation matrix with around 2/3 sparsity) As far as I Know GPU dosn't suit to openMP. I conclue CPU multi threading is the best option but maybe I am wrong ? Regards -- Sent from: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/