Since MPI 1] has become a standard for message-passing on distributed memory machines a number of implementations have evolved. Today there is an MPI implementation available for all relevant MPP systems, a number of which is based on MPICH 2]. In this paper we are going to present performance comparison for several implementations of MPI on diierent MPPs. Results for the Cray T3E, the IBM RS/6...

This research project deals with interconnection technologies for parallel and distributed computing systems. Nowadays, interconnection networks are ubiquitous in the computing field. At the chip level, networks are present in clustered microprocessors, on-chip multiprocessors and systems on chip. Some workstations and servers begin to use switched networks to interconnect their different modul...

We propose Range-based Ternary Search Tree (RTST), a tree-based approach for flow-table lookup in SDN network. RTST builds upon flow-tables in SDN switches to provide a fast lookup among flows. We present a parallel multi-pipeline architecture for implementing RTST that benefits from high throughput and low latency. The proposed RTST and architecture achieve a memory efficiency of 1 byte of mem...

We consider some methods of evaluating parallel performance on clusters and MPP platforms. These methods are based on using a parallel code for the numerical simulation of 3D incompressible viscous flow in a cylindrical domain. Details of the efficient parallelization of this code are discussed for distributed memory computers with relatively slow communication links. Results of measurements of...

The impact of the Belt and Road Initiative (BRI) on environment is an important but controversial topic. But assessing it faces a significant challenge for separating its policy from overall effect economic development that will also have environmental impacts. This paper attempts to provide evolutionary counterfactual baseline evaluate BRI, based distribution dynamics approach mobility probabi...

Abstract Network latency is a critical factor for the perceived quality of experience many applications. With an increasing focus on interactive and real-time applications, which require reliable low latency, ability to continuously efficiently monitor becoming more important than ever. Always-on passive monitoring can provide continuous metrics without injecting any traffic into network. Howev...

The penetration result obtained on a filter test stand depends on several factors. Two of these are challenge aerosol size distribution and the particle detector used to measure the particle size and concentration. Some filter testers employ a monodisperse aerosol challenge while others use a polydisperse challenge. Some particle detectors are based on particle counting while others are based o...

We have taken a Grand Challenge 3d Multi-Grid code, initially developed on the Cray C-90 and subsequently parallelized for MPPs, and implemented it using the DUDE object-oriented, run-time system which combines both task and data parallelism. The Grand Challenge 3d Multi-Grid code, QGMG (Quasi-Geostrophic Multi-Grid), solves the quasigeostrophic equations which describe the nonlinear dynamics o...

Chronic inflammation is a common feature of aging and numerous diseases such as diabetes, obesity, autoimmune syndromes has been linked to the development hematological malignancy. Blood-forming hematopoietic stem cells (HSC) can contribute these via production tissue-damaging myeloid and/or acquisition mutations in epigenetic transcriptional regulators that initiate evolution toward leukemogen...

Internet protocol (IP) packet filtering as a firewall (FW) technology is one of the most widely researched networks functions over past two decades. IP process incoming and outgoing network packets by matching several headers fields with thousands predefined filters known filter-set. With development modern technologies such software-defined networking (SDN) increase in attacks threatening secu...