starboard/tools/testing/sharding_configuration.json

{
  "default": [
    {
      "base_unittests": [1, 2],
      "layout_tests": "*"
    },
    {
      "nplb":"*",
      "player_filter_tests": [1, 2]
    },
    {
      "base_unittests": [2, 2],
      "net_unittests": [2, 2],
      "player_filter_tests": [2, 2]
    }
  ],
  "raspi-2":[
    {
      "base_unittests": [1, 6],
      "layout_tests": [5, 6],
      "net_unittests": [2, 6],
      "player_filter_tests": [1, 6],
      "renderer_test": [6, 6]
    },
    {
      "base_unittests": [2, 6],
      "layout_tests": [4, 6],
      "net_unittests": [1, 6],
      "nplb": [1, 5],
      "player_filter_tests": [5, 6],
      "renderer_test": [5, 6]
    },
    {
      "base_unittests": [3, 6],
      "layout_tests": [6, 6],
      "net_unittests": [4, 6],
      "nplb": [4, 5],
      "player_filter_tests": [3, 6],
      "renderer_test": [1, 6]
    },
    {
      "base_unittests": [5, 6],
      "layout_tests": [3, 6],
      "net_unittests": [5, 6],
      "nplb": [2, 5],
      "player_filter_tests": [2, 6],
      "renderer_test": [2, 6]
    },
    {
      "base_unittests": [6, 6],
      "layout_tests": [1, 6],
      "net_unittests": [3, 6],
      "nplb": [3, 5],
      "player_filter_tests": [4, 6],
      "renderer_test": [4, 6]
    }
  ]
}