I have requirement to run performance test suite, where each script will consist of set of  REST APIs for one particular functionality on a given platform, like in Loadrunner or Jmeter we can run multiple scripts together or in parallel either  using thread group in Jmeter or Controller in Loadrunner. Is it the same possible on Locust??
In Locust every test is group/scenario/case is represented by a Locust User. You could develop several Users with all the tests scripts that you need to run and execute all of them in a single parallel Locust run configuration.
Option in Locust to run multiple Locustfile together like in Jmeter running multiple Thread Groups in Parallel