File transfer to/from Rackham

There are multiple ways to transfer files to/from Rackham:

Method	Features
Using a graphical program	Graphical interface, intuitive, for small amounts of data only
Using SCP	Terminal, easy to learn, can be used in scripts
Using SFTP	Terminal, easy to learn, secure
Using transit	Terminal, easy to learn, secure, can transfer between HPC clusters

Each of these methods is discussed below.

Using a graphical program

One can transfer files to/from Rackham using a graphical program. A graphical interface is intuitive to most users. However, it can be used for small amounts of data only and whatever you do cannot be automated.

See Rackham file transfer using a graphical program for a step-by-step guide how to transfer files using a graphical tool.

Using SCP

One can transfer files to/from Rackham using SCP in a terminal. This works similar to a regular copy of files, except that a remote address needs to be specified. The advantage of SCP is that is can be used in scripts.

See Rackham file transfer using SCP for a step-by-step guide how to transfer files using SCP.

Using SFTP

One can transfer files to/from Rackham using SFTP in a terminal. One connects a local and a remote folder, after which one can upload and download files. SFTP is considered a secure file transfer protocol.

See Rackham file transfer using SFTP for a step-by-step guide how to transfer files using SFTP.

Using transit

One can transfer files to/from Rackham using the UPPMAX transit server. One connects a local folder and the transit server, after which one can upload and download files.

See Rackham file transfer using transit for a step-by-step guide how to transfer files using the transit UPPMAX server.

Overview

flowchart TD

    %% Give a white background to all nodes, instead of a transparent one
    classDef node fill:#fff,color:#000,stroke:#000

    %% Graph nodes for files and calculations
    classDef file_node fill:#fcf,color:#000,stroke:#f0f
    classDef calculation_node fill:#ccf,color:#000,stroke:#00f
    classDef transit_node fill:#fff,color:#000,stroke:#fff

    subgraph sub_inside[SUNET]
      direction LR
      user(User)
      user_local_files(Local user files):::file_node

      subgraph sub_transit_env[Transit]
        transit_login(Transit login):::calculation_node
        files_on_transit(Files posted to Transit):::transit_node
      end
      subgraph sub_rackham_shared_env[Rackham]
          rackham_login(Rackham login node):::calculation_node
          files_in_rackham_home(Files in Rackham home folder):::file_node
      end
    end

    %% Shared subgraph color scheme
    %% style sub_outside fill:#ccc,color:#000,stroke:#ccc
    style sub_inside fill:#ccc,color:#000,stroke:#000
    style sub_transit_env fill:#cfc,color:#000,stroke:#000
    style sub_rackham_shared_env fill:#fcc,color:#000,stroke:#000

    user --> |has|user_local_files
    user --> |logs in |transit_login
    user --> |logs in |rackham_login

    user_local_files <--> |graphical tool|files_in_rackham_home
    user_local_files <--> |SCP|files_in_rackham_home
    user_local_files <--> |SFTP|files_in_rackham_home
    user_local_files <--> |graphical tool|files_on_transit
    user_local_files <--> |SFTP|files_on_transit

    rackham_login --> |can use|files_in_rackham_home

    transit_login --> |can use|files_on_transit
    files_on_transit <--> |transfer|files_in_rackham_home

    files_in_rackham_home ~~~ transit_login

Overview of file transfer on Rackham The purple nodes are about file transfer, the blue nodes are about 'doing other things'. The user can be either inside or outside SUNET.