Buffer Large Number of 100 million Points to DAQmx

I am trying to write a large buffer of 100 million data points to DAQmx and then output it on the AO of the NI USB 6001 Module using DAQmx in Finite Samples Mode. I have realized that if I interrupt the task by stopping and clearing the task, DAQmx does not release the memory; therefore, if I try the second time to start the task and write a new set of 100 million data points to the AO, I get the following error "Not enough memory to complete this operation".

If someone can explain why the memory is not released after the task is cleared and if there is anyway I can force DAQmx to release the memory after I clear the task.