graph G {
    compound="true"
    rankdir="TB"
    bgcolor="white"
    node [
        fixedsize="false"
        fontname="Tahoma"
        color="white"
        fillcolor="deepskyblue2"
        fontcolor="black"
        shape="box"
        style="filled"
        penwidth="1.0"
    ]
    edge [
        fontname="Arial"
        color="crimson"
        fontcolor="black"
        fontsize="12"
        arrowsize="0.5"
        penwidth="1.0"
    ]


    "horovod/keras" -- "horovod/tensorflow" [label=" 102 ", penwidth="1"];
    "examples/elastic" -- "examples" [label=" 515 ", penwidth="10"];
    "horovod/torch" -- "horovod/tensorflow" [label=" 64 ", penwidth="1"];
    "horovod/mxnet" -- "horovod/torch" [label=" 100 ", penwidth="1"];

}