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- Adding a USB connection from the UPS to a system allows that system to execute a shutdown command, properly shutting the system down in a timely manner during a prolonged power outage. Otherwise the system will simply lose power, and that kind of forced shutdown can often cause software and hardware failures.
- Ideally, ChemIT will have the resources to expand our capabilities to enable shutting down UPS-protected systems during prolonged power outages running beyond the capacities of the UPS, beyond the systems with a direct USB connection to the UPS.
Cluster name | UPS for | UPS shutdown algorithm, if any | Tools used | Other notes |
|---|---|---|---|---|
NONE | n/a | n/a | ||
(Unknown) | n/a | n/a | Cluster managed by CAC, not ChemIT | |
Done Spring'14 |
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Done Spring'14 |
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Done Spring'14 |
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NONE | n/a | n/a | ||
Scheraga: Current, production Matrix | Done Fall'14 |
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| Scheraga: Forthcoming Matrix | Done Fall'14 | 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's own s/w. On Linux systems, running "nut". | |
Yes |
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ChemIT (C4) | Done |
| ||
| Baird: 1 rack-mounted computational computer | NONE | n/a | n/a | |
| Freed: Eldor | NONE | n/a | n/a | |
| Petersen: 2 rack-mounted computational computers | Yes, but needs to be deployed in true production; using Widom's UPS for now. | UPS supporting both system #50 and system #51. UPS is USB-connected to system #50, which itself does not send signal to system #51. Algorithms for System #50 is: Shutdown if only 10% battery power is left. (System #51 currently does not have a way to be shutdown properly if there is a prolonged power outage.) | Windows OS | ChemIT would like to: 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 | n/a | n/a |
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