Hp Scalable Visualization Array Software Manuale Utente Scaricare il pdf (Pagina 61)

IMPORTANT: Note that the you may lose the video display; however, the keyboard and mouse

continue to work such that you can actually control the multi-tile image. This is because the

multi-tile display device may be using a resolution that is unsupported by the KVM or RKM.

You should be able to use the arrow keys to move among the various cluster nodes, including

the head node.

Figure 6-3 shows the relationships among the processes that run when you launch a visualization

job.

There are four processes that must run when a visualization session begins:

• The X Servers.

• Xdmx.

• Chromium.

• The visualization application.

Xdmx is a process that begins when you submit a visualization session. It must be launched

before the application. Xdmx is the single frontend proxy X Server that acts as a proxy to a set

of backend X servers; thus there is a single instance of Xdmx running on one of the display nodes.

Figure 6-3 Processes Running with Chromium-DMX Script

GFX

GigE

To External

Network

To Display

Device

Xdmx

Application

X Server

External Node

Display Node 1

DMX

Window

Console

GFX

GigE

Display Node 2

cursor

Display Device (2 tiles)

To Display

Device

Keyboard

Chromium

GigE

X Server

Chromium

6.3.5 Data Access

For a serial application that uses Chromium, place the data files in a convenient location for your

site configuration. One location that provides fast access to data is on a local disk on the Execution

Host (the node running your application). Given that the application in this example runs on a

single node, there is little to be gained by distributing the data. You can choose the /tmp directory

to store data on the local disk.

6.3 Running a Workstation Application Using a Multi-Tile Display 61

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