    def run(options = {})
      options = {
        build_reference:      true,
        send_email:           false,
        email_all_developers: false,
        report_results:       false,
        uses_lsf:             true
      }.merge(options)
      options = load_options if running_in_reference_workspace?
      targets = prepare_targets(options)
      if running_in_reference_workspace?
        Origen.lsf.clear_all
        yield options
        wait_for_completion(options) if options[:uses_lsf]
        save_and_delete_output
      else
        if options[:build_reference]
          @reference_tag = version_to_tag(options[:version] || get_version(options))
          # passing the options for regression to the setup reference workspace method.
          setup_reference_workspace(options)
          # Generate the reference files
          save_options(options)
          Origen.with_origen_root(reference_origen_root) do
            disable_origen_version_check do
              Dir.chdir reference_origen_root do
                Bundler.with_clean_env do
                  system 'rm -rf lbin'
                  # If regression is run using a service account, we need to setup the path/bundler manually
                  # The regression manager needs to be passed a --service_account option when initiated.
                  if options[:service_account]
                    puts "Running with a service account, setting up the workspace manually now, assuming it runs BASH!! <-- can't assume bash always"
                    puts 'This is not an ideal way, need to discuss. Though, a normal user will never set service_account to true'
                    # Future enhancement, probably add the sourcing of files in a service_origen_setup file.
                    # Check if service_origen_setup exists, if it does, load/execute the file. If not, ask user to provide it.
                    # If running as a service account, service_origen_setup file is NOT optional.
                    # More enhancements to come on this bit of code, but if someone finds a better cleaner way, I am happy to discuss the issues I have seen and come up with a solution.
                    system 'source ~/.bash_profile'
                    system 'source ~/.bashrc.user'
                    system 'bundle install --gemfile Gemfile --binstubs lbin --path ~/.origen/gems/' # this needs to be executed as 'origen -v' does not seem to handle it on its own.
                    system 'origen -v' # Let origen handle the gems installation and bundler setup.
                  else
                    if Origen.site_config.gem_manage_bundler
                      system 'origen -v'
                      system 'bundle install' # Make sure bundle updates the necessary config/gems required for Origen.
                      system 'origen m debug'
                    else
                      system 'bundle install' # Make sure bundle updates the necessary config/gems required for Origen.
                      system 'bundle exec origen -v'
                      system 'origen m debug'
                    end
                  end
                  Origen.log.info '######################################################'
                  Origen.log.info 'running regression command in reference workspace...'
                  Origen.log.info '######################################################'
                  Origen.log.info
                  if Origen.site_config.gem_manage_bundler
                    system 'origen regression'
                  else
                    system 'bundle exec origen regression'
                  end
                end
              end
            end
          end
        end
        # Generate the latest files for comparison
        Origen.lsf.clear_all
        Origen.log.info '######################################################'
        Origen.log.info 'running regression command in local workspace...'
        Origen.log.info '######################################################'
        Origen.log.info
        yield options
        wait_for_completion(options) if options[:uses_lsf]
        summarize_results(options)

        # call exit code false to force process fail
        unless Origen.app.stats.clean_run?
          exit 1
        end
      end
    end