Session Command in Fastload - forum topic by arunshan04

Hi can any one explain me how SESSION command is working in teradata;
example:
.SET SESSIONS 13;
Assume that i have 18 PE's in my teradata system. Will it login to 13 PE's at the same time. Please coreect me if i am wrong.
How to calculate No of sessions in teradata & what are the things we need to consider for sessions.
Thanks
Arun