Summary information for Hoffmann researchers, as of 12/

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12/13:

Helios and Sol will be unavailable to researchers between Monday, Jan. 6th at 9am and approximately Thursday, Jan 9th, at noon.

• Before the shutdown, all data of value must be copied off of Sol.
  • All user directory data will be removed.
• Before the shutdown, all jobs on both Sol and Helios must be stopped.
  • Any remaining jobs will be stopped by ChemIT staff
• Only Sol will be up after this work is done.(Helios will no longer be available after all this is done.)
  • Data will be moved from Helios to Sol.
  • And Helios's nodes will be added to Sol.

Detailed information for cluster migration:

1) Reduce the amount of

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researchers’ temporary, test user data on Sol to the bare minimum during the break.

• After the break, ChemIT will be deleting the content within everyone's test home directories on Sol. (Those directories were originally copied there as a testing convenience during our test phase.)
  • We do this deletion before the final copy to ensure a clean import of researchers' researchers’ current production home directories from Helios.
  • Lulu advised researchers of this step before the Thanksgiving break, so hopefully no surprises.
• During the winter break, Sol's backup is...? data will be backed up.
  • As with Helios, Sol's data will be copied and versioned to a dedicated, internal hard drive.
  • NEW: EZ-Backup will be enabled on Sol, providing off-site backup protection.
  • QUESTION for Roald: What backup will Sol have during the winter break, and beyond? Versioning? EZ-Backup? Both?

Bottom line: If there are any files on Sol which researchers cannot afford to lose, researchers must move that data to Helios (or elsewhere) before Sol is turned off.

2) Monday, Jan. 6th at 9am: Helios AND Sol being turned off to researchers

Researchers mus must know that:

• ALL jobs must cease by then, or they . Any remaining jobs will be turned off by ChemIT.
• Also, there must be no remaining research data on Sol.

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• Confirm that Sol is "good". That is, there is no need to "roll back" to using Helios's head node and for us to start again.
• Hoffmann group members are encouraged to install their shared group software in the /datahome/ Hoffmannhoffmann/bin/ directory. Including:
  • Materials Studio software. (Who? If Prasad is not available to do this, let's let’s discuss your options- thank you.)
  • vasp
  • gulp
  • etc.

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• Once Hoffmann researchers confirm Sol is "good", Helios's head node can be added as a compute node to Sol.

NOTE: Helios will no longer be available after all this is done.

• Data will be moved from Helios to Sol.
• And Helios's nodes will be added to Sol.

Thank you -ChemIT

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Older or other notes:

Data rates

12/11/13: Users data to transfer from Helios to Sol is about 80GB. The transfer time, using rsync, is expected to take about 24 hours.

Next steps

• Meet to review all options and confirm desired direction and expected timing.
• Review resources. Huayun Gen has cluster management experience, including set-up.

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