Installing a reentrant load module

You will get the most benefit from reentrancy if you link the program with the RENT attribute and any other attributes you would normally use, and have your system programmer install the load module in the link pack area (LPA) or the extended link pack area (ELPA) of the system.

Installing a module in the LPA, ELPA or saved segment requires an initial program load (IPL) of your operating system. You can use the SET PROG=xx console command to add or remove modules from dynamic LPA.