Current cloud computing infrastructure typically assumes a homogeneous collection of commodity hardware, with details about hardware variation intentionally hidden from users. In this paper, we present our approach for extending the traditional notions of cloud computing to provide a cloud-based access model to clusters that contain a heterogeneous architectures and accelerators. We describe our ongoing work extending the OpenStack cloud computing stack to support heterogeneous architectures and accelerators, and our experiences running OpenStack on our local heterogeneous cluster testbed.
A destructive examination of a B-25 waste storage container that was buried in a shallow nonradiological land burial facility for approximately 8 years showed that pitting was the most prevalent form of corrosion and suggested that continued burial would result in through-wall pits after 30 years. This result suggests that through wall pits will provide a path for water flow into and out of similar B-25 containers after approximately 30 years of burial. Pitting was the most severe on the exterior of the lid. However, the lid had collapsed into the container, probably because the soil loading exceeded the support capacity of the lid. This observation demonstrates that lid strength is a significant factor when assessing structural integrity of the B-25 containers. The lid had collapse had allowed the container to fill with soil and water. A review of procurement specifications for the B-25 containers suggest that the container examined in this work was purchased from an earlier version of the B-25 container procurement specification.
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