No. The scalar update udf i have is working perfectly fine. The results from UDF match with all theoretical results, the only problem is it's extremely slow and i want to speed it up. that's why i am trying to parallelize. the erosion example does not help my cause. Is there any example like this that shows how parallelizing of UDF is done?

If not for the manual is there any other reference book maybe a textbook or something that explains how the udf's can be parallelized?