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A snapshot of the UPS's used to support servers, switches, and other equipment under ChemIT's management. Mostly within ChemIT's Baker 248 server room.

UPS inventory for CCB Clusters and non-cluster HPCs

Note: Currently none of the clusters ChemIT manages have UPSs for their computer nodes.

Cluster name

UPS for
main system or headnode

UPS shutdown algorithm, if any

Tools usedOther notes

Abruna

NONE
Unique: Need to do ASAP (no backup of OS!)

n/a

n/a 

Ananth

 (Unknown)

n/a

n/aCluster managed by CAC, not ChemIT

Collum

Done Spring'14

 

  

Hoffmann

Done Spring'14

 

  

Lancaster (w/ Crane)

Done Spring'14
(Funded by Crane)

 

  

Loring

NONE
Unique: Need to do ASAP (no backup of OS!)

n/a

n/a 

Scheraga: Current, production Matrix

Done Fall'14
(See below for stand-alone computational (GPU) computers)

 

  
Scheraga: Forthcoming Matrix

Done Fall'14
(See below for stand-alone computational (GPU) computers, if any are to remain as such)

UPS supporting both Synology storage system and headnode.

UPS USB-connected to Synology storage system. Synology thus sends a signal to headnode. Algorithms are:

  • Synology:
  • Headnode:

Synology's own s/w.

On Linux systems, running "nut".

 

Widom

Yes
Waiting for head node to deploy (on C4 at the moment)

 

  

ChemIT (C4)

Done
Old UPS; on the margin

 

  
Baird: 1 rack-mounted computational computer

NONE
ChemIT recommended making this investment (standard of practice), but group decided explicitly not to make the investment.

n/an/a 
Freed: EldorNONEn/an/a 
Petersen: 2 rack-mounted computational computers

Yes, but needs to be deployed in true production; using Widom's UPS for now.
ChemIT using UPS for testing UPS-related control software.

UPS supporting both stem #50 and system #51.

UPS USB-connected to system #50, which itself does not send signal to system #51.

On system #50: Shutdown if only 10% battery power is left.

On system #51: No s/w running to listen for signal from system #50(if signal were to be sent).

Windows OSTo do: Establish sending a signal from system #50 to system #51 and have system #51 properly shut down in the event of a prolonged outage.
Scheraga: 4 GPU rack-mounted computational computers

NONE
($900, estimate)
Need to protect? Data point: Feb'14 outage resulted in one of these not booting up correctly.

n/an/a 

What does it cost to UPS a research system?

Current goal: Do all head nodes and stand-alone computers in 248 Baker Lab. Started getting done, fall 2014.

Assuming protection for 1-3 minutes MAXIMUM:

About $180 (APC brand) per head node or server every ~3-4 years  (3 yr for warranty and ~4 years actual battery life).

  • Unusual case: ~$900/ set of 4 GPU systems (Scheraga) every ~3-4 years (for this, must confirm approach, appropriateness, and estimates).

Remaining UPS's to invest in

Clusters

Most we been done Spring 14, after the spate of power failures. See CCB's HPC page (first chart, in "UPS for headnode" column) for details

Cluster

Done

Not done

Notes

Loring

 

X

Unique: Need to do ASAP

Abruna

 

X

Unique: Need to do ASAP

Non-clusters

See CCB's HPC page (second chart, in "UPS" column) and CCB's non-HPC page (in "UPS" column) for details of the few that are already done.

Stand-alone computers' UPS status:

Computer

Done

Note done

Notes

Coates: MS SQL Server

 

X

Unique: Need to do ASAP

Freed: Eldor

 

X

Unique: Need to do ASAP? (Q: Is OS backed up?)

Review others at above two cited pages which might need a UPS, after above ones done.

Switches

Do all switches: Maybe ~$340 ($170*2), every ~4 years.

  • Recommend: Do ASAP.
  • Q: Funding?
  • Other issues and concerns with actually implementing this approach:
    • Rack space. Maybe power. Maybe cord lengths. What other issues?

Do all compute nodes: ~$18K initially, and perhaps ~$4.5K every ~4 years to replace batteries and deal with UPS hardware failures.

  • ~20 20amp UPS's ($900 each) required.
    • Replacement batteries ~$200 each, or ~1/4 replacement cost.
  • Estimates are simply back-of-the-envelope calculations.
  • If were to actually implement, there may be smarter ways to do this, but the total cost will likely not be lower.
    • In fact, costs may be higher, if sufficiently higher benefit doing it a different way, for example.
  • Issues and concerns with actually implementing this approach:
    • Costs. Rack space. Maybe power. Maybe cord lengths. What other issues?

Compute node counts, for UPS pricing estimates. Does not include head node:

Cluster

Compute node count

Power strip equivalents
(~8/strip MAX)

Cost estimate,
every 4 years

Notes

Collum

8

1

$900

 

Lancaster, with Crane (new)

10

2

$1.8K

 

Hoffmann

19

2

$1.8K

 

Scheraga

91

13

$11.7K

 

Loring

4

1

$900

 

Abruna

9

1

$900

 

C4 head node: pilot
Widom's 2 nodes there.

N/A

N/A

N/A

This CCB Community head node pilot has no compute nodes of its own.
It hosts compute nodes from CCB researchers.

Widom

2

1

?

Compute nodes are hanging off of "C4" head node, above.

TOTALS

~140?

21

$18K + Widom

 

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