Cloud as a Service by Enrique Castro-Leon & Robert Harmon

Author:Enrique Castro-Leon & Robert Harmon
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA

Identifying Opportunities for Cloud Platform Innovation

ASCP instances can define their own platforms in the sense that functionality is not fixed. Once an ASCP design becomes publicly available in a venue such as OCP, other industry players, be it a CSP with a pain point to address, or a technology provider intent on bringing a new capability to the industry can take the base design and augment it.

There are at least two possible paths to bring up new functionality: by improving on the original design through enhanced firmware algorithms or through a more sophisticated baseboard logic design, or perhaps more interestingly because it mimics the pattern seen in service networks, by composition. We revisit this example from an application design perspective. For now, let us focus on the original example of inoculating a rack with pooled power supplies against PSU failures without overprovisioning PSUs. Because of the large number of nodes relative to the available space for PSUs, overprovisioning is not a feasible alternative in practice.

Contemporary server baseboards exhibit a highly dynamic power consumption behavior, with very low idle power draw in the 50- to 60-watt range for a dual-CPU baseboard. This power consumption figure can rise as much as 350 to 400 watts when an application drives the CPUs to full utilization. Figure 5-3 shows a measurement of a lightly configured cloud platform baseboard with only two DIMMs running the Intel Power and Thermal Utility (PTU) stress test showing a power draw of 351 watts. These boards have fulfilled the aspirational requirements called for by Barroso and Hölzle in their classic 2007 paper[12].

Figure 5-3.Power draw of a cloud platform baseboard running the Intel PTU stress test

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.