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DM - Site Hardware (1.09.07)

Tom Crawford

CMB-S4 Collaboration Meeting – March 8th-12th 2021

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Site Computing Resources (aka 1.09.07: Site Hardware): Description

  • What is it and what is it for?
    • Computing hardware on-site at South Pole to produce high-cadence (~daily) maps for QA and transient searches.
    • Needed because baseline bandwidth from Pole not enough to get full TOD to US in quasi-real time.*
    • All the cyan stuff over here.
    • Small component of on-site hardware at Atacama too, but budget/requirements dominated by Pole.
    • New aspect in PBDR: Full copy of Pole hardware in US.

NOTE: Daily map-making / transient search will be a simple scaled-up copy of this same analysis being on SPT-3G data on-site at Pole, so hardware requirements should scale as well.

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* still discussing whether to make full

bandwidth from Pole a requirement

CMB-S4 Collaboration Meeting – March 8th-12th 2021

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Site Computing Resources (aka 1.09.07: Site Hardware): Cost & BOE

Non-Labor (Hardware): Scale from SPT-3G Pole computing hardware budget using ratio of # of detectors and assuming disk costs go down by ~30%.

  • Roughly $400k of compute + $280k of disk for Pole hardware, slightly less for US copy (less disk needed).

Labor: Scale from SPT-3G Pole computing design, procurement, installation, and testing effort.

  • 4.5 non-scientist, on-project FTE years, all in FY 2025 & 2026.
  • This will probably change soon as personnel responsibilities get worked out between Sites and DM.

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CMB-S4 Collaboration Meeting – March 8th-12th 2021

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Site Computing Resources (aka 1.09.07: Site Hardware): Schedule

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FY23

FY26

South Pole system design. (FY23+24)

Procure, build & test US copy of Pole system. (FY25)

Chile system design. (FY24+25)

Procure, build & test Pole system. (FY26)

Procure, build & test Chile system. (FY26)

CMB-S4 Collaboration Meeting – March 8th-12th 2021

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Site Computing Resources (aka 1.09.07: Site Hardware): Interfaces and Opportunities

  • Major interfaces:
    • Sites:
      • power, space, network, cooling
      • Requirements described in Chile-DM and South Pole-DM ICDs (CMBS4 Documents 432 and 433 in docdb).
  • Opportunities:
    • If Pole bandwidth is upgraded significantly, Pole Site Hardware requirements and budget decrease (almost to zero).
    • Is this an opportunity or a requirement?

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CMB-S4 Collaboration Meeting – March 8th-12th 2021