The BEgrid Tribune. Newsletter n 3 April Standardisation for grid computing. Rosette Vandenbroucke BEgrid Coordinator

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1 Newsletter n 3 April 2008 The BEgrid Tribune Contact BEgrid BELNET Wetenschapsstraat,4 Rue de la Science, BRUSSELS Tél: begrid@belnet.be Editorial Dear Reader, In this issue we have chosen to spend some time on standardisation for grid computing. This topic is not specific to BEgrid but has its relevance. We have chosen to use glite as grid middleware and in this way we can already connect to other major infrastructures. However there is more grid in the world and it is interesting and useful to see how standardisation and interoperability in the grid world proceed in order to create the future worldwide grid to which BEgrid participates. There is further news about research and grid, new developments in BEgrid, new grid events and many requests to let us know how you are using BEgrid, to let us know your needs (courses, applications,...). Please respond, BEgrid is there for you! Again, do distribute the BEgrid Tribune as widely as possible so that a maximum of researchers can learn about grid computing and the advantages it can represent for their work. Rosette Vandenbroucke Standardisation for grid computing Rosette Vandenbroucke BEgrid Coordinator The concept of grid computing and the expected benefits for users and their computing resource providers lead to major efforts in the development of grid middleware - grid middleware is the software layer that is installed above the operating system to realize the grid functionalities. Those grid middlewares, adopted by large or small grid infrastructures, by a well-defined research environment, by a country, and notwithstanding the fact that they offer about the same functionalities, are essentially not compatible. Each grid infrastructure based on a different middleware forms an island in the grid landscape. This phenomenon is a barrier to the creation of a world-wide grid to be compared with the world-wide web. Standardisation is here the only possible answer. Three organisations are active in grid standardisation: the Open Grid Forum (OGF, Open Middleware Infrastructure Institute Europe (OMII Europe, and ETSI (European Telecommunications Standards Institute, Those three organisations do very different work but cooperate in order to realize a grid environment that can be generally adopted. OGF, created by the integration of the Global Grid Forum and the Enterprise Grid Alliance, is accepted - 1 -

2 as the authority to define standards for grid computing. OGF-Europe was born in February this year. OGF defined the Open Grid Services Architecture as the framework for the development of grid middleware that will be compatible and that will be able to interoperate hence creating grid infrastructures that can be interconnected. OGF is a collaboration of users, developers and vendors. Specific workgroups develop the specifications for well defined parts (services) of the grid. Those are: applications, architecture, computing, data, infrastructure, management and security. In Europe, ETSI has added grid computing to its agenda and started a technical committee that looks after interoperability of grids and the relation between telecom operators and grid. The initial participants are Alcatel, ARCEP, BT Group, CETECOM, EADS, France Telecom, Fraunhofer, Fujitsu UK, Hitachi Europe, IBM, INRIA, INTEL, MINEFI, Oracle, Siemens AG and Telefonica. For the moment the committee identifies the interoperability problems and defines a test environment for grid interoperability testing. Another recent and important step forward is the foundation of OMII-Europe in the frame of a European FP6 project that counts 16 partners among which American, Chinese and European organisations. OMII-Europe develops software components to realize interoperability between different grid infrastructures. These developments follow the Open source principle and are based on webservices. Practically speaking they look at the interoperability between the middlewares glite (EGEE project), Unicore and Globus (commercial US product). To this goal OMII-Europe creates a database with quality software for a number of gridservices that ensure interoperability between different platforms. They focus for the moment on the following grid services: Basic Execution Service (BES), Data Integration service (OGSA-DAI), Virtual Organisation Management Service (VOMS), Accounting Service, Portal Capability. These services are mostly based on the corresponding standards defined by OGF. BES is a service that gives the user the possibility to start, monitor and manage computing requests. OGSA-DAI realises a uniform access to different data structures (relational databases, XML databases, flat file systems,...). VOMS manages the authorisation information for virtual organisations. The RUS (Resource Usage Service) OGF specification was taken as the basis for the development of the accounting service component. The GridSphere Portal Framework, an open source web portal, has been chosen to create the portal capability. In late April OMII-Europe will release five software components that allow grid users to work across Europe s three major grid platforms as mentioned above. The birth of OGF-Europe Rosette Vandenbroucke BEgrid Coordinator OGF-Europe, started in February 2008, is a project funded by the European Commission for mobilizing and integrating communities on grid standards & best practices globally. The lack of open standards in the critical area of middleware is one limiting factor in commercial adoption of Grid computing to date. The OGF-Europe project seeks to accelerate standards development and adoption, through a dynamic work plan that provides the mechanisms for achieving near-term solutions to known grid adoption challenges resulting in well-defined best practices and global standards. The ability for standards bodies to act in co-ordination with market requirements is an important factor in speeding adoption. OGF-Europe will focus on the essence of mobilisation and integration of Grid communities with the intent of delivering actionable and sustainable results. The OGF-Europe project is aligned with OGF s global mission of pervasive grid adoption through interoperable software standards. OGF-Europe will also coordinate an Industry Experts council to better understand how European enterprises are dealing with issues surrounding interoperation and standardisation and to engage them in the core work of OGF. An OGF-Europe workshop will be held: OGF23 in the first week of June 2008, hosted by the Barcelona Supercomputing Centre and OGF25 that is planned in collaboration with the EGEE User Forum in spring For more information:

3 GIN, the OGF Grid Interoperability Now Community Group and its interoperability demonstrations Morris Riedel, Jülich Research Centre and GIN Many Grid projects have begun to offer production services to end-users during the past several years with an increasing number of application projects that require access to a wide variety of resources and services in multiple Grids. Therefore, the purpose of the Grid Interoperation Now (GIN) Community Group is to organize, manage and demonstrate a set of interoperation efforts among production Grid projects and e- Science infrastructures using computational or storage- related resources in more than one production Grid. The GIN group defines interoperation as what needs to be done to get production Grids to work together as a fast short-term achievement using as much existing technologies and workarounds as available today. Hence, this is not the perfect solution and different than interoperability that is defined as the native ability of Grids and Grid technologies to interact directly via common open standards in the near future. In other words, GIN demonstrates where standards are still missing in production Grids and provides lessons learned out of production Grids if standards have to be improved towards production usage. Interoperation efforts of production Grids typically involve a lot of different integrated components out of different technology areas like information, security or data. That's why GIN implements interoperation in specific areas. First, authorization and identity management (GIN-AUTH) deals with resource sharing among members of the GIN Virtual Organization (VO). Second, the data management and movement (GIN-DATA) area is working on the interoperation of different data management technologies currently in use of multiple e- Science infrastructures. These include the Storage Resource Broker (SRB), Storage Resource Managers (SRM) and GridFTP. Third, the job description and submission (GIN-JOBS) area focuses on job management across different Grid technologies and middlewares used in production. Another important area is the information services and schema (GIN-INFO) area, because the efforts conducted in this area basically provide the base for cross-grid interoperation taking up-to-date information into account. These interoperations rely on information models such as Common Information Model (CIM) and Grid Laboratory Uniform Environment (GLUE) or information systems such as Berkeley Database Information Index (BDII) and Monitoring and Discovery Services (MDS). Finally, the operations experience of pilot test applications (GIN-OPS) for cross-grid operations works on different applications that require resources from multiple Grid infrastructures. About 9 different interoperation demonstrations have been shown at booths at SC07 (Super Computer 2007) that either did daily demonstrations (e.g. Enabling Grids for e-science, Hungarian Grid, NorduGrid Collaboration booths) or a dedicated Grid day (e.g. John von Neumann Institute for Computing booth). In more detail, members of the group presented 'Storage Resource Broker (SRB) and Storage Resource Manager (SRM) Island interoperability', including the transfer of files between an SRM and an SRB using OGF's GridFTP specification as the file transfer protocol. Another demonstration related to data was the 'WS- DAIR interface for the glite AMGA Metadata Catalogue'. The glite-amga metadata catalogue, developed within the EGEE project, provides access to relational data on the Grid and is widely used in the scientific Grid community. The demonstration presented interoperation by implementation of a WS-DAIR compatible interface in AMGA. Another interesting demonstration was the 'information system interoperation'. An attempt was made to translate information from all the existing production Grid infrastructures in order to populate a single information resource. The resource chosen was a Berkeley Database Information Index (BDII) and the common format used was the Glue Schema version 1.2. The result is a BDII that contains information from 9 production Grid infrastructures (EGEE, OSG, NDGF, Naregi, Teragrid, Pragma, DEISA, NGS, APAC). This information was used to show the location of the computing centres in Google Earth and the current Grid landscape for the production Grids. There were also demonstrations that underlined how the standard landscape of OGF is evolving in production Grids. In the 'UNICORE and glite Interoperation' demonstration, the interoperation of the glite (European EGEE Grid) and UNICORE 5 (European DEISA Grid) production Grid middleware using proprietary protocols motivates the usage of standards from OGF in future. In this demonstration, users build a job on the glite User Interface and submit it through the glite Workload Manager to an interoperation Computing Element that forwards jobs to the UNICORE Grid for their execution on supercomputers. We see here a clear demand for an open standard like the OGSA-Basic Execution Services (BES) that could be used in cross- Grid job submission scenarios if both middleware would use it in future. Therefore, the 'VOMS- enabled and - 3 -

4 OGSA-BES-based job submits between UNICORE and glite' demonstration showed the evolution of the above mentioned demonstration for future usage in the production Grids using emerging open standards from OGF and OASIS. The UNICORE 6 BES and CREAM-BES of glite are both OGF OGSA-BES-compliant services developed in OMII-Europe. However, lessons learned from GIN indicate that job submission standards alone are not enough for interoperation and security is also a major point. Therefore, we used the new SAML-compliant Virtual Organization Membership Service (VOMS) of OMII-Europe as security setup. All in all, the demonstration showed one client that is able to submit jobs to both of these Grid middleware systems without changing the security setup or the job description language. This was not possible before and is a real success story coming out of OMII-Europe. Hence, there are components from OMII-Europe that provide technical interoperability between EGEE (through glite) and DEISA (through UNICORE 6) in the near future. End-users at SC2007 have seen the 'GIN portals' demonstration in action based on P-GRADE (Parallel Grid Run-time and Application Development Environment). This is a service rich graphical environment for the development, execution and monitoring of data-driven Grid applications. The P-GRADE Portal is used by users and application developers of several national (UK NGS, HunGrid, Turkish Grid, etc.) and international Grid based virtual organizations (EGEE, SEE-GRID, etc.). The demonstration included most important features and typical use cases of the environment as well as other outcomes of the developer alliance which is behind the P-GRADE Portal efforts. Another demonstration showed the emerging interoperability between the accounting systems DGAS and SGAS achieved by the OMII-Europe project. DGAS is the accounting system of glite used within EGEE and is currently augmented with an OGF OGSA - Resource Usage Service (RUS) compliant interface. SGAS is the accounting system of the Swedish Grid and Globus Toolkits (Tech Preview) and is also currently augmented with an emerging OGF OGSA- Resource Usage Service (RUS) interface. Here the exchange of accounting information was demonstrated by using an SGAS client to extract usage records compliant with the OGF Usage Record Format (URF) standard from a DGAS server. Aligned with this demonstration an OGSA-RUS interface in UNICORE has been shown that uses the URF information for resource-level monitoring in an interoperable application called LLView that could leverage URFs via OGSA-RUS interfaces also from other systems such as DGAS or SGAS. The Interoperation demonstration showed the processing of a small workflow employing the NAMD molecular dynamics suite. Several DEISA sites participated and specific jobs have been formulated using OGF's JSDL specification. Within the workflow a number of compute intensive jobs have been submitted to DEISA sites with the help of the DESHL UNICORE command line interface that uses the OGF SAGA standard. At the same time a similar number of jobs have been submitted via GRAM to the AU Grid and executed primarily at Monash. Output from the Australian jobs will be moved to the DEISA GPFS filesystem via OGF's GridFTP and post-processed later. In another demonstration, a subset of the GridFTP2 protocol has been shown as implementation in dcache, Globus C, and Java client libraries. These libraries are already used within production Grids and a demonstration was shown by the NDGF. Compliance and interoperability testing of the High Performance Computing Basic Profile Demonstration Steven Newhouse, Co-Chair, OGF HPC Basic Profile Working Group SuperComputing 2007 in Reno saw the second 'interoperability fest' involving the OGF's HPC Basic Profile (HPCBP) specification. Groups from academia, research and industry came together to demonstrate the interoperability of the core specification and to prototype extensions to the core specification used to support more advanced capabilities - such as file staging. High Performance Computing Basic Profile (HPCBP) Background The HPCBP specification has been developed by the OGF's HPC Profile Working Group over the last 18 months to define how to submit, monitor and manage jobs using standard mechanisms across different job schedulers or Grid middleware - 4 -

5 from different software providers. A significant milestone was passed in August 2007 when the HPC Profile Working Group's first specification - the HPC Basic Profile was published as a proposed recommendation. As part of the process of moving the HPCBP from a proposed to a full recommendation it is necessary to gather experiences of implementing the specification, and to demonstrate its interoperability between two or more independent implementations. The working group, comprising individuals from industry, academia and research, decided to use SuperComputing 2007 as the venue for an 'interoperability fest' of the published specifications. The HPCBP is focused on just managing job submission yet it provides sufficient core functionality to enable its use as a basis for integration into applications (both desktop and web based), its use as a basis for meta-scheduling and from within workflow engines. It leverages standards developed within the OGF (the Basic Execution Service and the Job Submission Description Language specification) and those from the broader web services community (WS- Security, WSDL and SOAP). At SC06 last year over a dozen groups drawn from industry, academia and research demonstrated interoperability between their prototype implementations of this web service on their existing job submission infrastructures. This year, with the HPCBP specification now a proposed OGF standards recommendation, many of these groups returned to show how the longer-term integration of the HPCBP into their plans was proceeding. Several commercial organizations were using prototypes developed by their engineering teams as part of their plans for inclusion in their products. Teams from academia and research were showing how their implementations could be deployed and used with large scale Gird infrastructure deployments. SuperComputing 2007 Demonstration Results Participants in this year's activity included Altair Engineering, Inc, Microsoft, Platform Computing, the London e-science Centre at Imperial College London on behalf of OMII-UK, the University of Virginia e-science group, and representatives from the EGEE and NIC/FZJ groups within the OMII-Europe project. All of the participants were demonstrating their implementations of the HPCBP, revised from last year's versions due to the final changes made in the specification during the public comment period, and verifying their continued interoperability with other participating implementations. This interoperability work had been greatly accelerated through the use of a web based compatibility tester developed by the University of Virginia e-science group. The portal allows users to run a series of tests, derived from the HPCBP specification, to verify that their endpoint is compliant with the standard by seeing how it accepts and generates the XML messages, and responds to failures or incorrect messages. From this ground work, the interoperability testing that took place in the run-up to SC07 and at the meeting was broadly very successful. Jobs were passing from clients to services located on different operating systems (e.g. different versions of Linux and Windows), using different web service stacks (including Windows Communication Foundation, gsoap, Axis, XFire) and interfacing to different jobs scheduling interfaces (including PBS, LSF, Windows Compute Cluster Server v1 & v2, SGE, Torque, ARC, CREAM and Globus). Minor issues continue to be found relating to the interoperability of different web service hosting environments, (e.g. in how WS-Security is handled) rather than any fundamental problems with the HPCBP specification. Commercial Adoption Plans Several commercial organizations also announced their plans to provide implementations of the HPCBP compatible web services in their products. Platform Computing have contributed their implementation to an open source project (BES++ hosted on SourceForge) that uses the gsoap toolkit to submit jobs through the HPCBP into LSF. Work is ongoing at the University of Virginia to extend this software to submit jobs into other schedulers, such as PBS. This software will be integrated as part of Platform's product line in Microsoft were demonstrating a prototype of an HPCBP compatible web service running on Windows HPC Server the next version of Microsoft's HPC product due out in the second half of It uses the Windows Communication Foundation as its web service stack and it is currently planned for inclusion in the second beta of HPC Server 2008 due out in Spring Altair Engineering also had a - 5 -

6 prototype integration of an HPCBP compatible client in their PBS product that demonstrated the use of this specification as a meta-scheduler. Job submitted into PBS using the conventional command line utilities could be transferred to another HPCBP compliant resource. At SC07 jobs were being submitted into a PBS instance running on Linux on the Altair stand and being executed through the HPCBP web service on a Windows machine on the Microsoft stand. Next Steps After SC07 work is continuing within the working group to capture our interoperability experiences in order to support the migration of the HPCBP specification from a proposed to a full recommendation. These experiences are also being used to refine those implementations that will be emerging in 2008 as products. The practical experience gained at SC07 with the Data Staging and Activity Credential extensions will be used to develop a single extension focused exclusively on integrating File Staging operations that need different credentials with the current JSDL specification already used in the HPCBP. It is hoped that this specification will be submitted into the OGF process in early EGEE and interoperability As you might have noticed on the preceding pages, EGEE is also participating to interoperability and interoperation testing. is an interesting paper for further reading. News from the European grid front EGEE The EGEE-II project ( ) has been extended till the end of April 2008 to ensure that there is no gap with EGEE-III. This latter is due to start on the first of May and will last two years. This project should pave the way to a sustainable grid infrastructure in Europe. EGEE-III will continue the development of glite and contribute to the further growth of a worldwide grid. Almost all European countries as well as Asian, North- and South-American institutions are participating in EGEE-III. VUB and ULB are partners in EGEE-III and share the EGEE benefits with other institutes via BEgrid. The European Grid Initiative Design Study EGI-DS ( ) is a European project that studies how a sustainable European grid infrastructure can be realised. It will come up with an organisational model and the related financial consequences and ultimately initiate the construction of the EGI organization. EGI-DS has requested and got the support of 38 countries. The idea is to build EGI upon the National Grid Infrastructures (NGIs) which operate the grid infrastructures in each country. BEgrid has been recognised as the NGI for Belgium

7 Grid computing helps research in grid computing DISTRIBUTED VIDEO TRANSCODING VISION Divide et impera! Philippus II from Macedonia said it once and it proved effective. In this day and age we notice that there is a large-scale need for converting video files into smaller, more compressed videos (e.g. for publication on the web). Thus, we have used the aforementioned strategy for transcoding video files on the BEgrid: by dividing a large video file in smaller chunks, then sending them to different worker nodes to be transcoded and finally merging the results back together, we have noticed serious performance boosts. SETUP In our transcoding application, jobs are not autonomous: some jobs have to finish before others can be submitted. It makes no sense to merge before the file is split and transcoding a non-split video is exactly what we want to avoid. Therefore the notion of a batch is introduced: a batch contains multiple jobs, with each job possibly depending on the results of one or more predecessor jobs. Our program takes care of keeping track of which jobs have been submitted, scheduled and completed in a particular batch, and which jobs still rely on others to be able to launch. Job status is retrieved periodically, and when changes have been detected, necessary follow-up actions are triggered. For our performance measurements, we have used the UGent BEgrid nodes (reserved exclusively for this test). The UGent Grid consists of 41 Dual Opteron 242 worker nodes with 2GB RAM and 5 service nodes which are responsible for Grid management and installation. On the Grid setup detailed above, four different mpeg2 / vob input video files, with respective sizes of 277MB, 360MB, 720MB and 1GB have been used (note that vob files have a 1GB size limit) as input. These video files were split into a parameterized number of chunks (2, 4, 8, 12, 16, 20, 24 chunks), transcoded to Xvid in a distributed manner, and then merged back Jens Buysse, Bruno Volckaert IBBT-UGent, figure 1 influence of parallelism on total job turnaround into the resulting single output video with sizes of 76MB, 120MB, 231MB and 364MB respectively. In figure 1, the mean time for the full transcoding cycle (splitting, transcoding, merging) of the 1GB input file is shown for different numbers of chunks. By dividing the video in more chunks the amount of time spent transcoding decreases rapidly, while splitting and merging times rise. Overall, a clear performance gain can be spotted. One cannot keep increasing the parallelism (i.e. number of chunks) though, as linearly increasing merging and splitting times quickly become detrimental to the overall performance. This work is part of the larger IBBT-VRT GEISHA (Grid Enabled Infrastructure for Service Oriented High Definition Media Applications) project, which among others investigates the relevance of Grid computing technology for high definition media production and storage environments. For more information see

8 Send us your article If you are a researcher currently using BEgrid or if you have recently used BEgrid, we would like to feature your research as a case study for our website ( ) and to possibly use it as a promotional literature in the BEgrid Tribune. If you are interested in distributing your research findings to the Belgian audience then please contact begrid@belnet.be News about BEgrid developments BEgrid User Interfaces While a new command line user interface (UI), able to accept the new glite commands has been installed, work is being done to make a graphical grid user interface available. This web UI is based on the EnginFrame software and adapted to BEgrid. The first users are testing this new service. More news about its full availability will be announced via the mailing list and posted on the BEgrid website ( Adding dynamically more resources to BEgrid You might remember, from the previous BEgrid Tribune or from the BEgrid Seminar 2007, the project that adds the computing resources from student PC-rooms to the grid during off-time. This project is now in an evaluation phase and its results will be made available. In the mean time two related projects have been started in collaboration with Greek colleagues. The first project consists in the realisation of a CD and/or a DVD that contains the glite worker node software. An individual researcher can boot from this CD/DVD and add her/his computer to the BEgrid infrastructure for a time frame she/he decides. The second project goes a step further and implements the glite worker node software in a virtual machine realising in this way the permanent connection of an individual computer to the grid. The planning is to have both projects up and running before the end of the year. Applications on BEgrid? Up to now most BEgrid users execute their own code on the grid and only a few applications have been installed, most often on one of the grid clusters for a particular user group. There has been some software of general interest like Octave that has been installed in UGent and KULeuven. What we would know from you is if you are interested in having software packages of general interest (sometimes for certain disciplines) available on the grid. Below you find an example of software that is not bound to commercial licenses and that could be candidates for installation. PC GAMESS is a freely available ab initio and DFT computational chemistry program developed to offer high performance on Intel-compatible x86, AMD64, and EM64T processors. It was initially based on the free GAMESS(US) program sources but extends its functionality in some important areas. All time-critical sections of the original GAMESS code were modified to achieve the maximum possible performance, and most of them (at present, approximately 60-70% of the original GAMESS(US) code) was rewritten completely or replaced by the much more efficient code developed at MSU. Furthermore, very efficient assembler-level libraries, both self-made and those provided by vendors like Intel's MKL are used throughout. GAMESS-UK is the general purpose ab initio molecular electronic structure program for - 8 -

9 performing SCF-, DFT- and MCSCF-gradient calculations, together with a variety of techniques for post Hartree Fock calculations. Siesta (Spanish Initiative for Electronic Simulations with Thousands of Atoms) is both a method and its computer program implementation, to perform electronic structure calculations and ab initio molecular dynamics simulations of molecules and solids. DL_POLY is a general purpose serial and parallel molecular dynamics simulation package developed at Daresbury Laboratory by W. Smith, T.R. Forester an d I.T. Todorov. The original package was developed by the Molecular Simulation Group (now part of the Computational Chemistry Group, MSG) at Daresbury Laboratory under the auspices of the Engineering and Physical Sciences Research Council (EPSRC) for the EPSRC's Collaborative Computational Project for the Computer Simulation of Condensed Phases ( CCP5). Later developments were also supported by the Natural Environment Research Council through the eminerals project. The package is the property of the Central Laboratory of the Research Councils. GULP is a program for performing a variety of types of simulation on materials using boundary conditions of 0-D (molecules and clusters), 1-D (polymers), 2-D (surfaces, slabs and grain boundaries), or 3-D (periodic solids). The focus of the code is on analytical solutions, through the use of lattice dynamics, where possible, rather than on molecular dynamics. DOCK addresses the problem of "docking" molecules to each other. In general, "docking" is the identification of the low-energy binding modes of a small molecule, or ligand, within the active site of a macromolecule, or receptor, whose structure is known. A compound that interacts strongly with, or binds, a receptor associated with a disease may inhibit its function and thus act as a drug. CASTEP is a software package which uses density functional theory to provide a good atomic-level description of all manner of materials and molecules. CASTEP can give information about total energies, forces and stresses on an atomic system, as well as calculating optimum geometries, band structures, optical spectra, phonon spectra and much more. It can also perform molecular dynamics simulations. Amber is the collective name for a suite of programmes that allow users to carry out molecular dynamic simulations. GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with Matlab. It may also be used as a batch-oriented language. R is a language and environment for statistical computing and graphics. R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering,...) and graphical techniques, and is highly extensible. SABRE is a program for the statistical analysis of multi-process random effect response data. These responses can take the form of binary, ordinal, count and linear recurrent events. The response sequences can be of different types. Such multi-process data is common in many research areas, e.g. the analysis of work and life histories. Sabre has been used intensively on many longitudinal datasets surveys either with recurrent information collected over time or with a clustered sampling scheme. Weka is a comprehensive toolbench for machine learning and data mining. Its main strengths lie in the classification area, where all current ML approaches -- and quite a few older ones -- have been implemented within a clean, object-oriented Java class hierarchy. BLAST provides a method for rapid searching of nucleotide and protein databases. It detects local as well as global alignments. EMBOSS is a suite of bioinformatics applications i.e. sequence analysis programs and other assorted programs like enzyme kinetics. If you are interested in one of more of these programs then send a mail to begrid@belnet.be. If you have suggestions for other packages then do not hesitate to let us know

10 Look back on the 2007 BEgrid courses The last quarter of 2007 was a very busy time for the BEgrid staff and partners. At the starter level several BEgrid hands-on courses took place (in Brussels, Gent and Leuven) drawing in total more than 100 persons that want to give the grid a try. Computer scientists and other interested researchers could get some more background on grid computing by attending the course BEgrid for computer scientists. Finally a comprehensive BEgrid cluster installation course assembled participants of sites that planned to install a gridcluster and connect to BEgrid. New courses will be readied for the second half of If you need a grid course do not hesitate to communicate your needs to begrid@belnet.be BEgrid Seminar 2007 and 2008 Just over 100 people registered for this annual event that was very much appreciated. About 89% of the attendees answered that they would attend a next issue. It was the first time that parallel sessions were defined at a BEgrid Seminar and this option will be continued for the 2008 event. A stream for grid novices will also be started so that experienced users as well as newcomers can find the presentations that suit them best. The BEgrid Seminar 2008 will take place on the 21st of October at the International Auditorium, Brussels. Book this date in your agenda

11 Are you a researcher? Come and join BEgrid! You are a researcher temporarily or permanently in quest of computing power that your research laboratory or your institution cannot provide. Think about using BEgrid! BEgrid has more than 800 cores at your service. Using this infrastructure might give your research a real boost: obtaining results faster or even giving you the possibility to tackle more complex problems. Joining the grid if your institution already participates is a mere formality. Is your institution not yet a participant in BEgrid, then your request and use of the grid computing facilities can be a trigger for their participation. Interested? Send a mail to begrid@belnet.be. BEgrid Participants BELNET- Facultés Universitaires Notre Dame de la Paix Namur - Hogeschool Antwerpen- Katholieke Universiteit Leuven - Universiteit Antwerpen- Universiteit Gent - Université Libre de Bruxelles - Vlaams Instituut voor de Zee - Vrije Universiteit Brussel Become a BEgrid participant On the BEgrid website you find the current participants and also those that intend to join. Why do you not belong to that select club? Has your institute ever envisaged to join? Participating in BEgrid is a plus for your institution. It will open the door for your researchers to more computing power at the Belgian and international levels. It can be a very good tool to further co-operation amongst Belgian research groups: share data and computing power seamlessly. Do not hesitate any longer to contact begrid@belnet.be

12 8-9 May 2008 Grid events is the second in a series of international conferences on Grid and Large-Scale Distributed Systems jointly organized by the University of Mons-Hainaut and the Polytechnic Faculty of Mons. The purpose of the Grid@Mons initiative is to promote collaboration among researchers and practitioners interested in large-scale distributed systems in general, and Grid Computing in particular. Grid@Mons2008, will be held in Mons, Belgium on the 8th and 9th of May 2008, and is hosted by the Université de Mons-Hainaut The participation is free of charge, but registration is mandatory. Registration has to be done via the Grid@Mons Website ( before APRIL 30th, ADDRESS OF THE EVENT: Centre Vésale, Université de Mons-Hainaut Avenue du Champ de Mars Mons BEinGRID Industry Days - June 3-5, Barcelona, Spain BEinGRID Is Demonstrating Grid for Business This major event co-located with OGF23 and OGF-Europe is addressed to Grid experts and those interested in learning how Grid is THE solution for their business. The BEinGRID Industry Days will demonstrate real-world applications of Grid in a wide range of sectors including finance, supply chain management, media, leisure and environmental sciences, among others. These practical examples are complemented by internationally recognized experts in Grid who have a clear business approach. Sectors will be highlighted, showcasing Grid solutions through demos of successful BEinGRID Business Experiments, guest-speakers keynotes, success stories from the software and services industry, and roundtables. Information, Registration and Sponsorship Opportunities : BEgrid Seminar 2008, 21 October Please block already this date in your agenda so that you are sure to join us on that occasion

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