No threads being created when ippSetNumThreads is called

I have been trying to compress and decompress a text file using the LZO algorithm that IPP provides. It works fine when single threaded.

I tried using the function ippSetNumThreads() with arguments greater than 1.
Inorder to check if the specified number of threads are created I used the ippGetNumThreads() function.
The result is always 1 :( 

I have been using the function ippsEncodeLZO_8u() to compress and ippsDecodeLZO_8u() to decompress.
Though i have changed the parameters to be IppLZO1XMT as specified in the documentaion there seems to be no change in the number of threads created.