All Products
Search

This Product

    Elastic High Performance Computing:Use VNCViewer to intuitively access a cluster

    Document Center

    Elastic High Performance Computing:Use VNCViewer to intuitively access a cluster

    Last Updated:Apr 23, 2025

    VNCViewer is a software tool for remote access and control of the desktop. It implements remote desktop connection based on the Virtual Network Computing (VNC) protocol. VNCViewer allows you to view and control the desktop interface of a remote computer in real time on a local computer. This topic describes how to run VNCViewer to access the desktop interface of an Elastic High Performance Computing (E-HPC) cluster. You can manage cluster files and view job results in a visualized manner.

    Prerequisites

    The cluster is in the Running state.

    Procedure

    1. Log on to E-HPC Portal.

      For more information, see Log on to E-HPC Portal.

    2. Run VNCViewer.

      1. In the top navigation bar, click Task Management.

      2. In the upper part of the page, click VNCViewer.

      3. Configure the job information and click Submit.

        The following table describes the parameters.

        Parameter

        Description

        Username

        If the cluster type is SLURM and you log on to E-HPC Portal as the root user, you can submit jobs as the root user or a specified common user.

        Important

        If you specify a non-root user, make sure that the user has logged on and submitted jobs in E-HPC Portal.

        Session Name

        The name of the session generated by running VNCViewer to access the cluster.

        SpecNode

        The node on which VNCViewer runs.

        • If you set SpecNode to Queue, the system automatically allocates the nodes in the specified queue.

        • If you set SpecNode to Node, you can select only the localhost node, which is the current node.

        Cores per Node

        The number of CPU cores used to run VNCViewer.

        Resolution

        The resolution of the VNC interface.

    3. Open the VNC interface.

      1. In the top navigation bar, click Session Management.

      2. Find the VNC session and click the session name.

      3. Go to the visual interface of the E-HPC cluster to perform operations.

        VNC.png

    References

    You can view the session records of the current user, such as the sessions generated by running VNCViewer. For more information, see Manage cluster sessions.