Browsing Grup de Recerca en Computació Distribuïda (INSPIRES) by Author "Hernandez, Porfidio"
Now showing items 1-14 of 14
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Adjusting the Lengths of Time Slices when Scheduling PVM Jobs with High Memory Requirements
Giné, Francesc; Solsona Tehàs, Francesc; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2002)Our research is focussed on keeping both local and parallel jobs together in a non-dedicated cluster and scheduling them efficiently. In such systems, the overflow of the physical memory into the virtual memory usually ... -
Adjusting Time Slices to Apply Coscheduling Techniques in a non-dedicated NOW
Giné, Francesc; Solsona Tehàs, Francesc; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2002)Our research is focussed on keeping both local and parallel jobs together in a time-sharing NOW and efficiently scheduling them by means of coscheduling mechanisms. In such systems, the proper length of the time slice ... -
Cooperating Coscheduling in a Non-dedicated Cluster
Giné, Francesc; Solsona Tehàs, Francesc; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2003)Our research is focussed on keeping both local and parallel jobs together in a time-sharing NOW. In such systems, new scheduling approaches are needed to allocate the underloaded resources among parallel jobs. In this ... -
Coscheduling and Multiprogramming Level in a Non-dedicated Cluster
Hanzich, Mauricio; Giné, Francesc; Hernandez, Porfidio; Solsona Tehàs, Francesc; Luque, Emilio (Springer Verlag, 2004)Our interest is oriented towards keeping both local and parallel jobs together in a time-sharing non-dedicated cluster. In such systems, dynamic coscheduling techniques, without memory restriction, that consider the ... -
Dealing with Memory Constraints in a Non-Dedicated Linux Cluster
Giné, Francesc; Solsona Tehàs, Francesc; Hernandez, Porfidio; Luque, Emilio (SAGE, 2003)Our research is focused on keeping both local and parallel jobs together in a non-dedicated cluster and scheduling them efficiently. In such a system, memory becomes a critical resource for both kinds of job. Thus, the ... -
Exploiting Traffic Balancing and Multicast Efficiency in Distributed Video-on-Demand Architectures
Cores Prado, Fernando; Ripoll, A.; Qazzaz, Bahjat; Suppi, Remo; Yang, Xiaoyuan; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2003)Distributed Video-on-Demand (DVoD) systems are proposed as a solution to the limited streaming capacity and null scalability of centralized systems. In a previous work, we proposed a fully distributed large-scale ... -
Implementing and Analysing an Effective Explicit Coscheduling Algorithm on a NOW
Solsona Tehàs, Francesc; Giné, Francesc; Molina, Fermín; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2001)Networks of workstations (NOWs) have become important and cost-effective parallel platforms for scientific computations. In practice, a NOW system is heterogeneous and non-dedicated. These two unique factors make ... -
Implementing Explicit and Implicit Coscheduling in a PVM Environment
Solsona Tehàs, Francesc; Giné, Francesc; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2000)Our efforts are directed towards the understanding of the coscheduling mechanism in a NOW system when a parallel job is executed with local workloads, balancing parallel efficiency against the local interactive response. ... -
MemTo: A Memory Monitoring Tool for a Linux Cluster
Giné, Francesc; Solsona Tehàs, Francesc; Navarro, Xavi; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2001)Studies dealing with tuning, performance debugging and diagnosis in cluster environments largely benefit from in-depth knowledge of memory system information. In this paper a tool (called MemTo) for monitoring the ... -
Minimizing Paging Tradeoffs Applying Coscheduling Techniques in a Linux Cluster
Giné, Francesc; Solsona Tehàs, Francesc; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2003)Our research is focused on keeping both local and parallel jobs together in a non-dedicated cluster or NOW (Network of Workstations) and efficiently scheduling them by means of coscheduling mechanisms. The performance ... -
Monito: A Communication Monitoring Tool for a PVM-Linux Environment
Solsona Tehàs, Francesc; Giné, Francesc; Lérida Monsó, Josep Lluís; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2000)In this paper a new tool for monitoring the different queues of messages in a PVM environment is presented. The main aim of implementing this facility is to provide a means of capturing the bottlenecks and overheads of ... -
Multiprogramming Level of PVM Jobs in a Non-dedicated Linux NOW
Giné, Francesc; Solsona Tehàs, Francesc; Barrientos, Jesus; Hernandez, Porfidio; Hanzich, Mauricio; Luque, Emilio (Springer Verlag, 2003)Our research is focussed on keeping both local and PVM jobs together in a time-sharing Network Of Workstations (NOW) and efficiently scheduling them by means of dynamic coscheduling mechanisms. In this framework, we ... -
Predictive Coscheduling Implementation in a non-dedicated Linux Cluster
Solsona Tehàs, Francesc; Giné, Francesc; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2001)Our research is focussed on keeping both local and parallel jobs together in a non-dedicated cluster or NOW (Network Of Workstations) and efficiently scheduling them by means of coscheduling mechanisms. A real implementation ... -
Supporting Caching and Mirroring in Distributed Video-on-Demand Architectures
Yang, X. Y.; Cores Prado, Fernando; Ripoll, A.; Hernandez, Porfidio; Qazzaz, Bahjat; Suppi, Remo; Luque, Emilio (Springer Verlag, 2004)Distributed Video-on-Demand (DVoD) systems are proposed as a solution to the limited streaming capacity and null scalability of centralized systems. In such full decentralized architectures with storage constraints, ...