Practical evaluation of the Lasp programming model at large scale

Programming models for building large-scale distributed applications assist the developer in reasoning about consistency and distribution. However, many of the programming models for weak consistency, which promise the largest scalability gains, have little in the way of evaluation to demonstrate the promised scalability. We present an experience report on the implementation and largescale evaluation of one of these models, Lasp, originally presented at PPDP '15, which provides a declarative, functional programming style for distributed applications. We demonstrate the scalability of Lasp's prototype runtime implementation up to 1024 nodes in the Amazon cloud computing environment. It achieves high scalability by uniquely combining hybrid gossip with a programming model based on convergent computation. We report on the engineering challenges of this implementation and its evaluation, specifically related to operating research prototypes in a production cloud environment.H2020 - Horizon 2020 Framework Programme(609551)This work was partially funded by the SyncFree Project in the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement nº 609551, by the LightKone Project in the European Union Horizon 2020 Framework Programme for Research and Innovation (H2020/2014-2020), under grant agreement no 732505, by SMILES within project “TEC4Growth – Pervasive Intelligence, Enhancers and Proofs of Concept with Industrial Impact/NORTE-01- 0145-FEDER-000020” - nanced by the North Portugal Regional Operational Programme (NORTE 2020), under the PORTUGAL 2020 Partnership Agreement, and through the European Regional Development Fund (ERDF). Chris is funded by the Erasmus Mundus Doctorate Programme under grant agreement no 2012-0030.info:eu-repo/semantics/publishedVersio

Achlys : Towards a framework for distributed storage and generic computing applications for wireless IoT edge networks with Lasp on GRiSP

Internet of Things (IoT) has gained substantial attention over the past years. And the main discussion has been how to process the amount of data that it generates which has lead to the edge computing paradigm. Wether it is called fog1, edge or mist, the principle remains that cloud services must become available closer to clients. This documents presents ongoing work on future edge systems that are built to provide steadfast IoT services to users by bringing storage and processing power closer to peripheral parts of networks. Designing such infrastructures is becoming much more challenging as the number of IoT devices keeps growing. Production grade deployments have to meet very high performance requirements, and end-to-end solutions involve significant investments. In this paper, we aim at providing a solution to extend the range of the edge model to the very farthest nodes in the network. Specifically, we focus on providing reliable storage and computation capabilities immediately on wireless IoT sensor nodes. This extended edge model will allow end users to manage their IoT ecosystem without forcibly relying on gateways or Internet provider solutions. In this document, we introduce Achlys, a prototype implementation of an edge node that is a concrete port of the Lasp programming library on the GRiSP Erlang embedded system. This way, we aim at addressing the need for a general purpose edge that is both resilient and consistent in terms of storage and network. Finally, we study example use cases that could take advantage of integrating the Achlys framework and discuss future work for the latter.Comment: 7 page

Telescience Testbed Pilot Program

The Telescience Testbed Pilot Program is developing initial recommendations for requirements and design approaches for the information systems of the Space Station era. During this quarter, drafting of the final reports of the various participants was initiated. Several drafts are included in this report as the University technical reports

Mind Change as Related to Study Abroad: Students\u27 Perceptions about Changes in Their Religious Faith at the Latin American Studies Program

As the field of study abroad grows and diversifies, scholars call for more research on how the components of such programming impact students. In response to such calls, this study explored how alumni of the Latin American Studies Program (LASP) perceived specific study abroad components to influence changes in their religious faith. LASP alumni completed an anonymous, qualitative survey that invited them to indicate whether studying abroad influenced a change in their religious faith, describe this change and its consequent actions, and identify LASP components that most influenced this change. The survey generated 430 responses, which represent 24% of LASP\u27s alumni population. Results indicated that 89% of respondents perceived that studying abroad influenced a change in their religious faith. Respondents\u27 descriptions of this change revealed six themes--increased awareness of culture\u27s influence on religious faith, new embrace of doubt, more inclusive religious faith, greater emphasis on social justice, left Christianity, and solidified existing Christian faith. Respondents\u27 descriptions of the actions that emerged from these changes illustrated five themes--justice-centered vocation, creating sustainable economies, transforming communities, family decisions, and personal development. Respondents identified a blend of components that drove this change, which was characterized by formal learning experiences (lectures, readings, assignments) that were brought to life by reflective engagement of the Latin American context (relationships with host families, study trips, discussion groups). The results contribute to a growing body of research that identifies intercultural experience as a driver of religious change. Furthermore, the findings encourage educational leaders to prioritize study abroad programs that achieve integration between formal learning experiences and direct engagement of the host context

Telescience testbed pilot program, volume 3: Experiment summaries

Space Station Freedom and its associated labs, coupled with the availability of new computing and communications technologies, have the potential for significantly enhancing scientific research. A Telescience Testbed Pilot Program (TTPP), aimed at developing the experience base to deal with issues in the design of the future information system of the Space Station era. The testbeds represented four scientific disciplines (astronomy and astrophysics, earth science, life sciences, and microgravity sciences) and studied issues in payload design, operation, and data analysis. This volume, of a 3 volume set, which all contain the results of the TTPP, presents summaries of the experiments. This experiment involves the evaluation of the current Internet for the use of file and image transfer between SIRTF instrument teams. The main issue addressed was current network response times

Bridgewater State University Undergraduate & Graduate Catalog 2010-2011

This 2010-2011 Bridgewater State University Catalog outlines programs of study. The rules, regulations, policies, fees and other charges, courses of study, and academic requirements that appear in this catalog were in effect at the time of its publication. Like everything else in this catalog, they are published for informational purposes only, and they do not constitute a contract between the university and any student, applicant for admission or other person. Whether noted elsewhere in this catalog or not, the university reserves the right to change, eliminate, and add to any existing (and to introduce additional) rules, regulations, policies, fees and other charges, courses of study and academic requirements. Whenever it does so, the university will give as much advance notice as it considers feasible or appropriate, but it reserves the right in all cases to do so without notice. Statement of Student Responsibility In all cases, the student bears ultimate responsibility for reading the catalog and following the academic policies and regulations of the university.https://vc.bridgew.edu/bsu_catalogs/1001/thumbnail.jp

Bridgewater State University Undergraduate & Graduate Catalog 2012-2013

This 2012-2013 Bridgewater State University Catalog outlines programs of study. The rules, regulations, policies, fees and other charges, courses of study, and academic requirements that appear in this catalog were in effect at the time of its publication. Like everything else in this catalog, they are published for informational purposes only, and they do not constitute a contract between the university and any student, applicant for admission or other person. Whether noted elsewhere in this catalog or not, the university reserves the right to change, eliminate, and add to any existing (and to introduce additional) rules, regulations, policies, fees and other charges, courses of study and academic requirements. Whenever it does so, the university will give as much advance notice as it considers feasible or appropriate, but it reserves the right in all cases to do so without notice. Statement of Student Responsibility In all cases, the student bears ultimate responsibility for reading the catalog and following the academic policies and regulations of the university.https://vc.bridgew.edu/bsu_catalogs/1003/thumbnail.jp

Bridgewater State University Undergraduate & Graduate Catalog 2013-2014

This 2013-2014 Bridgewater State University Catalog outlines programs of study. The rules, regulations, policies, fees and other charges, courses of study, and academic requirements that appear in this catalog were in effect at the time of its publication. Like everything else in this catalog, they are published for informational purposes only, and they do not constitute a contract between the university and any student, applicant for admission or other person. Whether noted elsewhere in this catalog or not, the university reserves the right to change, eliminate, and add to any existing (and to introduce additional) rules, regulations, policies, fees and other charges, courses of study and academic requirements. Whenever it does so, the university will give as much advance notice as it considers feasible or appropriate, but it reserves the right in all cases to do so without notice. Statement of Student Responsibility In all cases, the student bears ultimate responsibility for reading the catalog and following the academic policies and regulations of the university.https://vc.bridgew.edu/bsu_catalogs/1004/thumbnail.jp