For anyone using tmux and vim, I recommend having a look at vimux (https://github.com/benmills/vimux). It lets you control your tmux pane from within vim.

I use two tmux windows, one of each of my screens. One is code and the other runs `make && ./test blah blah` whenever I hit F5 in vim. To get vimux to use windows (as opposed to just panes) there's a fork under pull requests (disclaimer: I wrote it).