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+# Greengrass Software diagram
+This diagram shows the flow of how Greengrass sets up and starts from an installer command. All steps in the diagram are running under main thread
+
+Note:
+
+1. Dashed boarders doesn’t contains solid code execution, they only represent the name of the sub-events
+2. Bold texts are the major flows of how greengrass is performing a set up
+
+![Nucleus provisioning diagram(1).jpg](..%2F..%2F..%2FDownloads%2FNucleus%20provisioning%20diagram%281%29.jpg)
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