Sockets Direct Protocol (SDP) is an industry standard pseudo socketslike implementation to allow existing sockets applications to directly and transparently take advantage of the advanced features of current generation networks such as InfiniBand. The SDP standard supports two kinds of sockets semantics, viz., Synchronous sockets (e.g., used by Linux, BSD, Windows) and Asynchronous sockets (e.g., used by Windows, upcoming support in Linux). Due to the inherent benefits of asynchronous sockets, the SDP standard allows several intelligent approaches such as source-avail and sink-avail based zero-copy for these sockets. Unfortunately, most of these approaches are not beneficial for the synchronous sockets interface. Further, due to its portability, ease of use and support on a wider set of platforms, the synchronous sockets interface is the one used by most sockets applications today. Thus, a mechanism by which the approaches proposed for asynchronous sockets can be used for synchronous sockets is highly desirable. In this paper, we propose one such mechanism, termed as AZ-SDP (Asynchronous Zero-Copy SDP), where we memory-protect application buffers and carry out communication asynchronously while maintaining the synchronous sockets semantics. We present our detailed design in this paper and evaluate the stack with an extensive set of benchmarks. The experimental results demonstrate that our approach can provide an improvement of close to 35% for medium-message unidirectional throughput and up to a factor of 2 benefit for computationcommunication overlap tests and multi-connection benchmarks.

Problem statement: An inherent feature of mobile ad hoc networks is the frequent change of network topology leading to stability and reliability problems of the network. Highly dynamic and dense network have to maintain acceptable level of service to data packets and limit the network control overheads. This capability is closely related as how quickly the network protocol control overhead is managed as a function of increased link changes. Dynamically limiting the routing control overheads based on the network topology improves the throughput of the network. Approach: In this study we propose Varying Overhead -Ad hoc on Demand Vector routing protocol (VO-AODV) for highly dynamic mobile Ad hoc network. The VO-AODV routing protocol proposed dynamically modifies the active route time based on the network topology. Results and Conclusion: Simulation results prove that the proposed model decreases the control overheads without decreasing the QOS of the network.

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The submerged perception circumstances cause incredible difficulties to the issue of article location from the low-goals submerged pictures. In this paper, we acquaint an effective strategy with improve the pictures caught submerged and corrupted in light of the medium dispersing and retention. It expands on the mixing of 2 pictures that are legitimately gotten from a shading redressed and white-adjusted adaptation of the first corrupted picture. In the wake of improving the submerged picture, plans to identify object that present in the submerged by utilizing novel edge saving and multiscale logical neural network. We concentrated for the most part on discovery of an item in the submerged that they are utilized to isolate them an article from the foundation by utilizing a mix of programmed difference extending pursued by picture number-crunching task, worldwide edge, and least channel. Our system could be a solitary picture approach that doesn't need particular equipment or information about the submerged conditions or scene structure. our upgraded pictures are described by better exposedness of the dull area, improved worldwide complexity and edge sharpness and our striking article recognition accomplishes both clear identification limit and multi-scale logical vigor at the same time in this manner accomplishes an enhanced presentation.