A RF catheter system includes a catheter with a proximal portion, a distal portion having a distal end and a lumen extending from the proximal portion to the distal portion. Utilizing these techniques, a sequential program execution model with interrupts can be maintained in a highly parallel scalable pipelined array processing containing multiple processing elements and distributed memories and register files. The method further comprises causing user credentials data, based on the identification data, to be sent to an authentication process of the provider for a set of one or more network resources that includes the particular network resource requested by the user, if the data indicates that the user is successfully identified. How many concurrent write operations are being executed may vary according to the comparing. A driving speed of the step motor is limited using two or more of a temperature of a working oil of the speed change control unit, the speed ratio of the continuously variable transmission, and the detected rotation speed as parameters.