Abstract
Water cooling of servers is emerging to high-performance computing (HPC) platforms, not only due to the requirements on effective cooling of high-density server blades, but also for effective recycling of waste heat. In this poster paper, we compare the measurement results of two production-grade HPC racks of the Norwegian Stallo supercomputer: one with air-cooled CPUs and the other with retrofitted direct-to-chip liquid cooling. The performance and power consumption measurements were recorded for computer room temperatures 20-30 °C. It was observed that the median performance measures with water cooling were 0.8-1.4% higher than with air cooling; while the average power consumption with water cooling was 9.4-14.4% lower than with air cooling. During this study, the computation-intensive LINPACK benchmark was executed on all the servers.
| Original language | English |
|---|---|
| Title of host publication | SoutheastCon 2016 |
| Publisher | IEEE |
| Number of pages | 2 |
| Volume | 2016-July |
| ISBN (Electronic) | 978-1-5090-2246-5 |
| DOIs | |
| Publication status | Published - 7 Jul 2016 |
| MoE publication type | A4 Conference publication |
| Event | IEEE Region 3 South East Conference - Norfolk, United States Duration: 30 Mar 2016 → 3 Apr 2016 |
Conference
| Conference | IEEE Region 3 South East Conference |
|---|---|
| Abbreviated title | SoutheastCon |
| Country/Territory | United States |
| City | Norfolk |
| Period | 30/03/2016 → 03/04/2016 |
Keywords
- computing performance
- direct water cooling
- high-performance computing
- power consumption
- waste heat recycling
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