dynamicInput = ssg.isInput(node);
dynamicInput = ssg.isInput(node) || SSG.simulator instanceof NoSimulator;
    private DirectCommunication(StaticStreamGraph SSG, FlatNode node) {        this.ssg = SSG;        this.node = node;        this.filter = (SIRFilter) node.contents;        // if this is a source of an ssg then set dynamicInput        dynamicInput = ssg.isInput(node);    }