consumer.setNumberOfSubtasks(numSubtasks);
consumer.setNumberOfSubtasksPerInstance(numSubtasksPerInstance);
consumer.getConfiguration().setBoolean(IS_SLOW_RECEIVER_CONFIG_KEY, isSlowReceiver);
if (useForwarder) {
producer.connectTo(forwarder, ChannelType.NETWORK, DistributionPattern.BIPARTITE);
forwarder.connectTo(consumer, ChannelType.NETWORK, DistributionPattern.BIPARTITE);
forwarder.setVertexToShareInstancesWith(producer);
consumer.setVertexToShareInstancesWith(producer);
}