+{% set host = host or 'node1' %}
+{% set benchmark = benchmark or 'int' %}
+{% set runspec_iterations = runspec_iterations or 1 %}
+{% set runspec_tune = runspec_tune or 'base' %}
+{% set runspec_size = runspec_size or 'ref' %}
+{% set runspec_rate = runspec_rate or 1 %}