Port Used on Window HPC Cluster Between Head Node and Compute Node

Question

We are installing HPC Pack 2019 on Azure Window VMs. We need to get understanding about what exact ports are used to communicate between various Nodes.

1. Port used between Head Node and Compute Node.
2. Port used between Client node and Head Node.

We are also using one window server as shared file storage. Application intermediate data is stored on this server. Which Port will be used to communicate with this server.

Answer 1

Hi @Ankur Mittal ,

Thank for reaching out to Microsoft Q&A forum.

To establish a communication between different nodes of a Window HPC Cluster you need to enable a certain ports to establish a effective communication between nodes.

Below are the some of the common ports required for both client-to-head node and head-to-compute node communications are :

• TCP 443: Used for secure communication over HTTPS.
• TCP 8040-8041: these ports facilitate communication for job submission and management tasks.
• TCP 9090: Used for HPC Cluster Manager for managing cluster resources and monitoring performance metrics.
• TCP/UDP 3389: Used for Remote Desktop Protocol (RDP) access where it allows users to connect remotely to the head node or client nodes.
• TCP 445: Used for SMB (Server Message Block) communication.

If you are using one window server as shared file storage and to establish a communication with it, you need to enable some of below ports for communication:

• TCP 445: Primary port used for Server Message Block (SMB) communication in modern Windows environments. It allows for file sharing over the network. This port is the recommended choice for secure file sharing.
• TCP 139: NetBIOS session service.
• UDP 137: Used for NetBIOS name service.
• UDP 138: Used for a NetBIOS datagram service.

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