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aurora_cluster:moving_data [2017/07/31 17:59]
florido
aurora_cluster:moving_data [2017/07/31 18:12]
florido [Uploading/Downloading data to/from an external source from Aurora]
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 Small files, whose size are below 10GB, can be moved using aurora'​s frontend. Small files, whose size are below 10GB, can be moved using aurora'​s frontend.
  
-Users of **Mathematical Physics**, as well as any other Lunarc user, can use their favorite tool to download and upload either from your own workstationthe Aurora front-end or the Aurora computing nodes. ​+Users of **Mathematical Physics**, as well as any other Lunarc user, can use their favorite tool to download and upload either from your own workstation ​or laptop to the Aurora front-end or the Aurora computing nodes. ​
 You can read about some of those tools on the [[iridium_cluster:​data| Move data to and from the Iridium Cluster]] pages. You can read about some of those tools on the [[iridium_cluster:​data| Move data to and from the Iridium Cluster]] pages.
  
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 ===== Moving big data for users of Nuclear, Theoretical and Particle Physics ===== ===== Moving big data for users of Nuclear, Theoretical and Particle Physics =====
  
-Users of these divisions can access the special node //fs2-hep// to be used for large downloads ​or uploads.+For big files (hundreds ​of gigabytes up) you should use ''​fs2-hep''​ as described below. Aurora is not a storage facility, therefore is not meant to be accessed by external sources to do data movement. If you move big data via the Aurora frontend it is extremely slow and will slow down your colleagues work. Also, Aurora frontend managers might interrupt your transfers if they see it is taking too much time.  
 + 
 +If handling big data, I strongly recommend to run an ssh/ftp server on your own laptop ​or workstation,​ or ask the sysadmin for a convenient form of online storage that can be accessed **from** Aurora as described below.
  
 //fs2-hep// has a direct very fast 10GB connection to the internet for downloads and uploads. //fs2-hep// has a direct very fast 10GB connection to the internet for downloads and uploads.
  
-Users of Particle and Theoretical Physics might need to download huge amount of data and therefore it was our objective ​to offload the Lunarc internal network and the usage of computing nodes as mere downloader nodes+Users of Particle and Theoretical Physics might need to download huge amount of data and therefore it was our goal to offload the Lunarc internal network and the usage of computing nodes as mere downloader nodes.
- +
-For big files (hundreds of gigabytes up) you should use ''​fs2-hep''​ as described below. Aurora is not a storage facility, therefore is not meant to be accessed by external sources to do data movement. If you move big data via the Aurora frontend it is extremely slow and will slow down your colleagues work. Also, Aurora frontend managers might interrupt your transfers if they see it is taking too much time.  +
- +
-If handling big data, I strongly recommend to run an ssh/ftp server on your own laptop or workstation,​ or ask the sysadmin for a convenient form of online storage that can be accessed **from** Aurora.+
  
-:​!:​**NOTE**:​!:​ **incoming connections from the internet are rejected**. This node can download FROM and upload TO the internet but cannot be accessed directly as a server to retrieve or upload data from OUTSIDE Lunarc. In other words, **it is not possible to directly connect TO** ''​fs2-hep''​ from the internet via ''​sftp''/''​ssh''/''​rsync''​. You can only run those on ''​fs2-hep''​ itself. Read more about this in [[#​Uploading/​Downloading data to/from Aurora from your laptop or workstation]].+:​!:​**NOTE**:​!:​ **incoming connections from the internet ​to fs2-hep ​are rejected**. This node can download FROM and upload TO the internet but cannot be accessed directly as a server to retrieve or upload data from OUTSIDE Lunarc. In other words, **it is not possible to directly connect TO** ''​fs2-hep''​ from the internet via ''​sftp''/''​ssh''/''​rsync''​.
  
 An overview of the upload/​download components are shown in the slide below: An overview of the upload/​download components are shown in the slide below:
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 The picture below shows the various steps. {{ :​aurora_cluster:​datamovementflowchartbiggfx.png?​600 |}} The picture below shows the various steps. {{ :​aurora_cluster:​datamovementflowchartbiggfx.png?​600 |}}
  
-==== Uploading/​Downloading data to/from an external source from Aurora ====+==== A. Uploading/​Downloading data to/from an external source from Aurora ====
   - Use your favourite download software. Some suggestions are available at [[iridium_cluster:​data|Moving data to and from Iridium]]. If the tool is not available please ask Florido to install it on ''​fs2-hep''​.   - Use your favourite download software. Some suggestions are available at [[iridium_cluster:​data|Moving data to and from Iridium]]. If the tool is not available please ask Florido to install it on ''​fs2-hep''​.
   - Use your home folder or one of the ''/​projects/​hep''​ folders as a destination folder. Any other path is not writable by your user. The ''/​tmp'' ​ folder will be deleted regularly so you should not use that. ''/​projects/​hep/​fs2''​ is accessible by everyone, while ''/​projects/​hep/​fs3''​ and ''/​projects/​hep/​fs4''​ is dedicated storage for the ATLAS project.   - Use your home folder or one of the ''/​projects/​hep''​ folders as a destination folder. Any other path is not writable by your user. The ''/​tmp'' ​ folder will be deleted regularly so you should not use that. ''/​projects/​hep/​fs2''​ is accessible by everyone, while ''/​projects/​hep/​fs3''​ and ''/​projects/​hep/​fs4''​ is dedicated storage for the ATLAS project.
aurora_cluster/moving_data.txt · Last modified: 2020/08/20 17:13 by florido

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