POPackage pk = GenPhyOp.topPackageOp();
pk.setRequestedParallelism(25);
php.addAsLeaf(pk);
POSplit sp2 = GenPhyOp.topSplitOp();
php.addAsLeaf(sp2);
POFilter fl3 = GenPhyOp.topFilterOp();
fl3.setRequestedParallelism(100);
POFilter fl4 = GenPhyOp.topFilterOp();
fl4.setRequestedParallelism(80);