Abstract. To solve problems that require far more memory than a single machine can supply, data can be swapped to disk in some manner, it can be compressed, and/or the memory of multiple parallel machines can be used to provide enough memory and storage space. Instead of implementing either functionality anew and specific for each application, or instead of relying on the operating system’s swa...

Conventional wisdom holds that Paxos is too expensive to use for high-volume, high-throughput, data-intensive applications. Consequently, fault-tolerant storage systems typically rely on special hardware, semantics weaker than sequential consistency, a limited update interface (such as append-only), primary-backup replication schemes that serialize all reads through the primary, clock synchroni...

Virtualization is becoming widely deployed in servers to efficiently provide many logically separate execution environments by reducing the demand for physical servers, so this approach reserves physical CPU resources. Nevertheless, it still consumes large amounts of storage because each virtual machine (VM) instance, needs its own multi-gigabyte disk image. Existing systems take efforts to red...

The Lincoln Laboratory IBM 360/67 is connected to the ARPA network and acts as a serving host providing access to the CP-67 virtual machine operating system. Upon completion of the Login procedure, users have control of a 360 virtual machine through a virtual 1052 online console. Attached to the virtual machine is a virtual card reader, card punch and line printer, and a number of disk storage ...

We study gravitational lensing by spiral galaxies, using realistic models consisting of halo, disk, and bulge components combined to produce a flat rotation curve. Proper dynamical normalization of the models is critical because a disk requires less mass than a spherical halo to produce the same rotation curve—a face-on Mestel disk has a lensing cross section only 41% as large as a singular iso...

This paper copes with the numerical simulation for convective heat transfer in the stator disk of an axial flux permanent magnet (AFPM) electrical machine. Overheating is one of the main issues in the design of AFMPs, which mainly occurs in the stator disk, so that it needs to be prevented. A rotor-stator configuration with 16 magnets at the periphery of the rotor is considered. Air is allowed ...

One of the main problems in design agricultural machines, including tillage is to ensure optimal energy intensity various technological operations. The design, kinematic and parameters rotary machines have a significant impact on indicators process quality tillage. These include diameter operating body machine, angular speed rotational disks, number cutting elements, translational body, height ...

Wind turbines require methods to predict the power produced as inflow conditions change. We compare the standard method of binning with a turbulence renormalization method and a machine learning approach using a data set derived from simulations. The method of binning is unable to cope with changes in turbulence; the turbulence renormalization method cannot account for changes in shear other th...

Cloud computing has become more and more popular and the technology of rapid virtual machine (VM) cloning is widely used in cloud computing environment to implement the fast deployment of VMs to meet the need of bursting computational request. However, the security issue of VM cloning technology is not considered thoroughly in current approaches. This paper proposes a virtual machine cloning ap...