Oleg Goldshmidt

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This paper describes partition allocation for parallel jobs in the Blue Genet/L supercomputer. It describes the novel network architecture of the Blue Gene/L (BG/L) three-dimensional (3D) computational core and presents a preliminary analysis of its properties and advantages compared those of with more traditional systems. The scalability challenge is(More)
The BlueGene/L supercomputer will use system-on-achip integration and a highly scalable cellular architecture to deliver 360 Teraflops of peak computing power. With 65,536 compute nodes, BlueGene/L represents a new level of scalability for parallel systems. As such, it is natural for many scalability challenges to arise. In this paper, we discuss challenges(More)
Three-dimensional torus is a common topology of network interconnects of multicomputers due to its simplicity and high scalability. A parallel job submitted to a three-dimensional toroidal machine typically requires an isolated, contiguous, rectangular partition connected as a mesh or a torus. Such partitioning leads to fragmentation and thus reduces(More)
Today's system management tools focus on a computer as a visible enclosure of both computational resources (CPU and memory) and the functionality and data that reside in the storage subsystem. Recent technological trends, such as shared SAN or NAS storage and virtualization, have the potential to break this tight association between functionality and(More)
The processing elements of many modern tightly coupled multicomputers are connected via mesh or toroidal networks. Such interconnects are simple and highly scalable, but suffer from high fragmentation, low utilization, and insufficient fault tolerance when the resources allocated to each job are dedicated. High-dimensional interconnects may be more(More)
Present day servers must support a variety of legacy I/O devices and protocols that are rarely used in the day to day server operation, at a significant cost in board layout complexity, reliability, power consumption, heat dissipation, and ease of management. We present a design of an IP Only Server, which has a single, unified I/O interface: IP network.(More)
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