[galaxy-dev] How can I execute one module with different input parameters in several nodes ?

Hi, How can I execute a module with different input parameters in several nodes ? For example, there is a module that calculates chromosome length, and a input file that contains 25 chromosome sequences. When I execute the module for the input file, I want to execute the module in 25 nodes with each chromosome sequence. In this situation, when I make a workflow, can I place the module once in the workflow ? not placing the module 25 times. Thanks Suan cho