if(_noutputs > 0){
final VectorGroup vg = vecs[0].group();
_appendables = new AppendableVec[_noutputs];
appendableChunks = new NewChunk[_noutputs];
for(int i = 0; i < _appendables.length; ++i){
_appendables[i] = new AppendableVec(vg.vecKey(_vid+i));
appendableChunks[i] = _appendables[i].chunkForChunkIdx(_lo);
}
}
// Call all the various map() calls that apply
_profile._userstart = System.currentTimeMillis();