multi-core processor about parallelizing udf
 

Hi, everyone
I have written a udf for ship wave simulation with fluent6.3.28
My computer is six-core processor, but the udf cannot be interpreted when i run the fluent with "D:\Program Files\Fluent6.3.26\ntbin\ntx86\fluent.exe -t6"

error: udf compiler: cannot execute cpp -I"D:\Program Files\fluent6.3.26/src" -I"D:\Program Files\fluent6.3.26/cortex/src" -I"D:\Program Files\fluent6.3.26/client/src" -I"D:\Program Files\fluent6.3.26/multipor
/src"

the udf is OK with one-core

so， anyone can tell me how to write the udf when use multi core processor?
thank you for giving a example if you can!