How to increase concurrency on Server
There is no concurrency limit from within the installation for server customers. You just have to increase the
nomad_clients autoscaling group to the desired value and add
parallelism attribute in the config file like below.
version: 2.1 jobs: test: docker: - image: cimg/<language>:<version TAG> parallelism: 4
More about Parallelism: https://circleci.com/docs/2.0/parallelism-faster-jobs/#specifying-a-jobs-parallelism-level