792 research outputs found
The KB paradigm and its application to interactive configuration
The knowledge base paradigm aims to express domain knowledge in a rich formal
language, and to use this domain knowledge as a knowledge base to solve various
problems and tasks that arise in the domain by applying multiple forms of
inference. As such, the paradigm applies a strict separation of concerns
between information and problem solving. In this paper, we analyze the
principles and feasibility of the knowledge base paradigm in the context of an
important class of applications: interactive configuration problems. In
interactive configuration problems, a configuration of interrelated objects
under constraints is searched, where the system assists the user in reaching an
intended configuration. It is widely recognized in industry that good software
solutions for these problems are very difficult to develop. We investigate such
problems from the perspective of the KB paradigm. We show that multiple
functionalities in this domain can be achieved by applying different forms of
logical inferences on a formal specification of the configuration domain. We
report on a proof of concept of this approach in a real-life application with a
banking company. To appear in Theory and Practice of Logic Programming (TPLP).Comment: To appear in Theory and Practice of Logic Programming (TPLP
Report from GI-Dagstuhl Seminar 16394: Software Performance Engineering in the DevOps World
This report documents the program and the outcomes of GI-Dagstuhl Seminar
16394 "Software Performance Engineering in the DevOps World".
The seminar addressed the problem of performance-aware DevOps. Both, DevOps
and performance engineering have been growing trends over the past one to two
years, in no small part due to the rise in importance of identifying
performance anomalies in the operations (Ops) of cloud and big data systems and
feeding these back to the development (Dev). However, so far, the research
community has treated software engineering, performance engineering, and cloud
computing mostly as individual research areas. We aimed to identify
cross-community collaboration, and to set the path for long-lasting
collaborations towards performance-aware DevOps.
The main goal of the seminar was to bring together young researchers (PhD
students in a later stage of their PhD, as well as PostDocs or Junior
Professors) in the areas of (i) software engineering, (ii) performance
engineering, and (iii) cloud computing and big data to present their current
research projects, to exchange experience and expertise, to discuss research
challenges, and to develop ideas for future collaborations
Automatic Deployment of Services in the Cloud with Aeolus Blender
International audienceWe present Aeolus Blender (Blender in the following), a software product for the automatic deployment and configuration of complex service-based, distributed software systems in the " cloud ". By relying on a configuration optimiser and a deployment planner, Blender fully automates the deployment of real-life applications on OpenStack cloud deployments , by exploiting a knowledge base of software services provided by the Mandriva Armonic tool suite. The final deployment is guaranteed to satisfy not only user requirements and relevant software dependencies , but also to be optimal with respect to the number of used virtual machines
Automatic deployment and reproducibility of workflow on the Cloud using container virtualization
PhD ThesisCloud computing is a service-oriented approach to distributed computing that has
many attractive features, including on-demand access to large compute resources. One
type of cloud applications are scientific work
ows, which are playing an increasingly
important role in building applications from heterogeneous components. Work
ows are
increasingly used in science as a means to capture, share, and publish computational
analysis. Clouds can offer a number of benefits to work
ow systems, including the
dynamic provisioning of the resources needed for computation and storage, which has
the potential to dramatically increase the ability to quickly extract new results from
the huge amounts of data now being collected.
However, there are increasing number of Cloud computing platforms, each with different
functionality and interfaces. It therefore becomes increasingly challenging to
de ne work
ows in a portable way so that they can be run reliably on different clouds.
As a consequence, work
ow developers face the problem of deciding which Cloud to
select and - more importantly for the long-term - how to avoid vendor lock-in.
A further issue that has arisen with work
ows is that it is common for them to stop
being executable a relatively short time after they were created. This can be due to
the external resources required to execute a work
ow - such as data and services -
becoming unavailable. It can also be caused by changes in the execution environment
on which the work
ow depends, such as changes to a library causing an error when a
work
ow service is executed. This "work
ow decay" issue is recognised as an impediment
to the reuse of work
ows and the reproducibility of their results. It is becoming
a major problem, as the reproducibility of science is increasingly dependent on the
reproducibility of scientific work
ows.
In this thesis we presented new solutions to address these challenges. We propose a new
approach to work
ow modelling that offers a portable and re-usable description of the
work
ow using the TOSCA specification language. Our approach addresses portability
by allowing work
ow components to be systematically specifed and automatically
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deployed on a range of clouds, or in local computing environments, using container
virtualisation techniques.
To address the issues of reproducibility and work
ow decay, our modelling and deployment
approach has also been integrated with source control and container management
techniques to create a new framework that e ciently supports dynamic work
ow deployment,
(re-)execution and reproducibility.
To improve deployment performance, we extend the framework with number of new
optimisation techniques, and evaluate their effect on a range of real and synthetic
work
ows.Ministry of Higher Education and
Scientific Research in Iraq and Mosul Universit
Selecting a Deployment Automation Tool for CRM Software in Elisa Oy
Software passes through several phases during its production process which are typically designing, developing, testing and delivering. In the software development life cycle (SDLC), the ultimate aim is to deliver the software product to its intended users with the expected functionality. Deployment is a critical step which harnesses all the work done in the previous stages in the SDLC and makes the software available to the end user. Thus, failure in the final deployment stage will waste the effort expended in earlier phases.
The responsibility for deployment usually belongs to operations teams and it is done manually or then partially automated, often using inefficient scripts. Manual deployment can be extremely difficult task, and it is easy to blunder with repetitive routines consisting of many steps such as setting up similar environments and installing software components in those environments. Some operations teams attempt to ease the manual work by writing scripts to automate the process, but ultimately this method can become complicated and burdensome.
The deployment process delays can be avoided and redundant costs eliminated in the error prone manual deployment process by changing the work culture and automating said processes. There are several products on the market to help automate this process. Achieving fully automated provisioning is the ultimate goal to produce and update services rapidly within enterprise applications in large corporations. Full automation is accomplished when the environments are set up automatically, and software installation is automatic in those environments.
The objective of this research is to introduce these automation tools to the Customer Relation Management (CRM) system at Elisa Oy and to develop a proposal for automating the deployment process as an alternative to its current manual process. CRM as a large system consists of numerous sub systems and software components. A deployment case with a selected tool will be demonstrated to show how the automation can be accomplished
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