Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Shiravi, A. Min, P.S. |
| Copyright Year | 2007 |
| Description | Author affiliation: Washington Univ. in St. Louis, St. Louis (Shiravi, A.; Min, P.S.) |
| Abstract | The LOOFA algorithm is a cell-based scheduler for CIOQ crossbar switches that can guarantee the work-conserving property in a cell-based switch if the crossbar switch works twice as fast as the line rate (speedup of two). Unfortunately, the cell based LOOFA algorithm is not work-conserving for variable- length packet switches because it interleaves the cells from different inputs to a particular output and does not necessarily serve cells belonging to a packet contiguously. Thus, the cells belonging to a variable- length packet must be reassembled at the output port before the packet can be transmitted. This requires a large buffer at the output stage, and causes extra delays. PLF, which is another suggested scheduling algorithm for variable-length packet switches, has its own limitations. PLF must use a considerable amount of memory at every crosspoint of the buffered crossbar, making the overall complexity high. In this paper we examine the work conserving property of the LOOFA and the PLF algorithms in variable-length packet switches and propose a packet-based version of the LOOFA (called the LOOFA-PB) for variable-length packets. The proposed algorithm is a $(L_{max}/2)-work-$ conserving algorithm and does not need a buffered crossbar or a speedup greater than two. In addition, the LOOFA-PB algorithm eliminates the need for reassembly and serves packets contiguously. As a result, it reduces the overall packet delay. Finally, eliminating the SAR functionality from the algorithm results in a smaller die size when implemented in an ASIC, and cheaper cost. |
| Starting Page | 6336 |
| Ending Page | 6343 |
| File Size | 288639 |
| Page Count | 8 |
| File Format | |
| ISBN | 1424403537 |
| DOI | 10.1109/ICC.2007.1049 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-06-24 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Packet switching Switches Scheduling algorithm Delay Communications Society Systems engineering and theory Communication switching Application specific integrated circuits Cost function Hardware |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|