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3. Operation of Open OnDemand

This section describes how to use Open OnDemand.

This section explains how to use the menu bar at the top of the screen.

3.1.1. File operations

Select Home Directory from Files on the menu bar to display TSUBAME's home directory.

Standard file operations can be performed from the buttons on the screen.

Button Operation Description
Open in Terminal Terminal Open TSUBAME terminal with a new tab
Refresh Refresh Refresh directory
New File File Create new file
New Directory Directory Create new directory
Upload Upload Upload a file
Download Download Download selected file(s)
Copy/Move Copy/Move Copy/Move selected file(s)
Delete Delete Delete selected files(s)
Change directry Directory Change directory
↑ Directory Move up to the parent directory
Copy path Path Copy current directory's path

3.1.2. Login to TSUBAME

Selecting "Clusters > TSUBAME cluster Shell Access", you can login to TSUBAME with. Multiple terminals can be opened.

To log out of TSUBAME and exit the terminal, type exit and close the browser tab.

Tips

The terminal will automatically disconnect after a certain period of inactivity. Please click here for a workaround. Session suddenly disconnected while working on TSUBAME4.0

3.1.3. Interactive Apps

For Interactive Apps, lease refer to 3.2. Interactive Apps.

3.1.4. Sessions

My Interactive Sessions can display own sessions.

Press Delete for each session to exit the session.

Tips

When the browser is narrower, the My Interactive Sessions string in the menu bar disappears, leaving only the icon display.

3.1.5. Help and Restart

Press Help for manual display and refresh.

If you have problems with Open OnDemand, try Restart Web Server first.

3.1.6. Logout

To log out of Open OnDemand, press Log Out on the menu bar.

Warnning

If you close your browser without pressing Log Out, your Open OnDemand session will remain open for a certain amount of time. If you close your browser without pressing Log Out, your Open OnDemand session will remain for a certain period of time, which may cause problems when you try to log in to Open OnDemand again.

3.2. Interactive Apps

The following three Interactive Apps are available for Open OnDemand in TSUBAME4.0.

  • TSUBAME Desktop (xfce)
  • Jupyter
  • code server

Interactive Apps are further divided into two types according to execution type.

  • Use normal compute nodes
  • Use a dedicated queue for interactive jobs (* interactive is included in the name)

Differences by execution type are as follows

Execution type Use normal compute nodes Use Interactive job queue
Mode of Use onerous Free on-campus use , onerous
Resource type selectable Interactive job queue only (Assigned resources number of physical CPU cores 24 cores, 96GB memory, 1MIG, but up to 12 people share the same resources.)
Number of nodes selectable 1 node only
Premium Options available not available
Reserving available not available

Below are the instructions for using Interactive Apps.

Info

The screenshots shown here are for "TSUBAME Desktop (xfce)".
There is no difference in the settings depending on the application, so please read them accordingly.

3.2.1. Selecting the application/execution type

From Pinned Apps at the bottom center of the screen, click the icon for the application you wish to use.

Go to the environment setting screen.

3.2.2. Environment setting

Set up the environment items and click the Launch button. The request is submitted as a job.

Catption Item Description
Select resouce type Resource type Select required resource type
Number of Request resources number Required node number
TSUBAME group group Select TSUBAME group
Maximum run time(hh:mm:ss) duration Set the maximum value for the scheduled usage time (can be terminated midway)
Priority Option priority Priority
Reservation Number (AR ID) ARID Specify the reservation number (AR ID) when using a reservation

Info

When using Interactive job queue, "TSUBAME group" and "Maximum run time" can only be set.

Info

Interactive job queue is available free of charge only for intramural users (tgz-edu) and access card users.
To use Interactive job queue free of charge, please specify “Free” in the “TSUBAME group” field.
Please note that if you specify a group, you will be charged for the target group.

Tips

The only resource types for which reservations can be used are node_f, node_h, node_q, and node_o.

3.2.3. Launching Applications

The request is submitted as a job, and when the specified resource is allocated, the session is set to Running.
If it is Queued, it is waiting to be executed, so wait a while before checking the status.

Once the session is Running, click “Launch app name” to launch the application.

Info

Compression” and ‘Image Quality’ are only displayed in TSUBAME Desktop (xfce).

Info

Pressing View Only (Share-able Link) opens a copy of the X desktop in a new tab.
You will not be able to control the screen, but you will see a mirrored display of the previous desktop.
By sending the URL of this tab via e-mail or other means, you can simply share or monitor the screen.

Below are the initial screens of each application (there is no difference depending on the execution type).
Please refer to the official website for details on how to use these applications.

3.2.4. Deleting a session

To exit the X desktop, close the browser tab and Delete the session from the session list. Once closed, the session will be marked as Completed.
The session will also be marked as Completed when the specified usage time has elapsed.
Sessions that have been marked as Completed will be automatically deleted from the list after a certain period of time.
If you want to delete a session immediately, press Delete.