testing - multiple user logins in jmeter -

i using jmeter test php application. need create different thread unique session each user. because in application can have 1 login per user @ time putting 100 times same user not conclusion. have created 40 users user0,user1....user39 same password there way automatically create simultaneous threads each of them?

thanks

you can use csv data set config. control allow use external source of variables. add -> config element -> csv data set config must set variable names, like: variable names (comma-delimited): username,password

then can use variables in http requests parameters like: ${username} , ${password}