nd4j-parameter-server-parent/nd4j-parameter-server/src/main/java/org/nd4j/parameterserver/updater/TimeDelayedParameterUpdater.java
@Override
    public boolean shouldReplicate() {
        long now = System.currentTimeMillis();
        long diff = Math.abs(now - lastSynced);
        return diff > syncTime;
    }
@Override
    public boolean shouldReplicate() {
        long now = System.currentTimeMillis();
        long diff = Math.abs(now - lastSynced);
        return diff > syncTime;
    }
Returns true if
the updater has accumulated enough ndarrays to
replicate to the workers

@return true if replication should happen,false otherwise