Gianluca Peco - Academia.edu (original) (raw)

Papers by Gianluca Peco

Proceedings of International Symposium on Grids and Clouds (ISGC) 2016 — PoS(ISGC 2016), 2017

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EPJ Web of Conferences, 2020

iTHEPHY is an EU strategic partnership ERASMUS+ project aiming at developing innovative student-c... more iTHEPHY is an EU strategic partnership ERASMUS+ project aiming at developing innovative student-centred Deeper Learning Approaches (DPA) for students enrolled in particle physics master’s degree programmes. This paper describes the iTHEPHY project status and main goals attained, with a focus on a web-based virtual environment developed to support groups of students and teams of teachers during their DPA learning and teaching activities. The platform is described in detail, focusing on the methodologies and technologies which enabled to deliver a modular, user-friendly, open-source, scalable and reusable platform. Identity and Access Management are the building blocks installed for the iTHEPHY project. Different configurations of services in the cloud will be also covered.

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IEEE Transactions on Nuclear Science, 2010

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Il Nuovo Cimento C, 2009

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Journal of Physics: Conference Series, 2008

Database replication is a key topic in the framework of the LHC Computing Grid to allow processin... more Database replication is a key topic in the framework of the LHC Computing Grid to allow processing of data in a distributed environment. In particular, the LHCb computing model relies on the LHC File Catalog, i.e. a database which stores information about files spread across the GRID, their logical names and the physical locations of all the replicas. The LHCb computing model requires the LFC to be replicated at Tier-1s. The LCG 3D project deals with the database replication issue and provides a replication service based on Oracle Streams technology. This paper describes the deployment of the LHC File Catalog replication to the INFN National Center for Telematics and Informatics (CNAF) and to other LHCb Tier-1 sites. We performed stress tests designed to evaluate any delay in the propagation of the streams and the scalability of the system. The tests show the robustness of the replica implementation with performance going much beyond the LHCb requirements.

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The LHCb experiment at CERN will have an online trigger farm composed of up to 2000 PCs. In order... more The LHCb experiment at CERN will have an online trigger farm composed of up to 2000 PCs. In order to monitor and control each PC and to supervise the overall status of the farm, a Farm Monitoring and Control System (FMC) was developed. The FMC is based on DIM (Distributed Information Management System) as network communication layer, it is accessible both through a command line interface and through the PVSS (Prozessvisualisierung und Steuerung) graphical interface, and it is interfaced to the Finite State Machine (FSM) of the LHCb Experiment Control System (ECS) in order to manage anomalous farm conditions. The FMC is an integral part of the ECS, which is in charge of monitoring and controlling all on-line components; it uses the same tools (DIM, PVSS, FSM, etc.) to guarantee its complete integration and a coherent look and feel throughout the whole control system.

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IEEE Transactions on Nuclear Science, 2006

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Abstract—In the prospect of employing 10 Gigabit Ethernet as networking technology for online sys... more Abstract—In the prospect of employing 10 Gigabit Ethernet as networking technology for online systems and offline data anal-ysis centers of High Energy Physics experiments, we performed a series of measurements with point-to-point data transfers over 10 Gigabit Ethernet links, ...

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IEEE Transactions on Nuclear Science, 2008

The LHCb experiment at CERN will have an on-line trigger farm composed of up to 2000 PCs. In orde... more The LHCb experiment at CERN will have an on-line trigger farm composed of up to 2000 PCs. In order to monitor and control each PC and to supervise the overall status of the farm, a farm monitoring and control system (FMC) was developed. The FMC is based on distributed information management (DIM) system as network communication layer, it is accessible

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IEEE Transactions on Nuclear Science, 2011

Amongst link technologies, InfiniBand has gained wide acceptance in the framework of High Perform... more Amongst link technologies, InfiniBand has gained wide acceptance in the framework of High Performance Computing (HPC), due to its high bandwidth and in particular to its low latency. Since InfiniBand is very flexible, supporting several kinds of messages, it is suitable, in principle, not only for HPC, but also for the data acquisition systems of High Energy Physics (HEP) Experiments. In order to check the InfiniBand capabilities in the framework of on-line systems of HEP Experiments, we performed measurements with point-to-point UDP data transfers over a 4-lane Double Data Rate InfiniBand connection, by means of the IPoIB (IP over InfiniBand) protocol stack, using the Host Channel Adapter cards mounted on a 8-lane PCI-Express bus of commodity PCs both as transmitters and receivers, thus measuring not only the capacity of the link itself, but also the effort required by the host CPUs, buses and Operating Systems. Using either the "Unreliable Datagram" or the "Reliable Connected" InfiniBand transfer modes, we measured the maximum achievable UDP data transfer throughput, the frame rate and the CPU loads of the sender/receiver processes and of the interrupt handlers as a function of the datagram size. Performance of InfiniBand in UDP point-to-point data transfer are then compared with that obtained with analogous tests per formed between the same PCs, using a 10-Gigabit Ethernet link.

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ABSTRACT Amongst link technologies, InfiniBand has gained wide acceptance in the framework of Hig... more ABSTRACT Amongst link technologies, InfiniBand has gained wide acceptance in the framework of High Performance Com puting (HPC), due to its high bandwidth and in particular to its low latency. Since InfiniBand is very flexible, supporting several kinds of messages, it is suitable, in principle, not only for HPC, but also for the data acquisition systems of High Energy Physics (HEP) Experiments. In order to check the InfiniBand capabilities in the frame work of on-line systems of HEP Experiments, we performed measurements with point-to-point UDP data transfers over a 4-lane Double Data Rate InfiniBand connection, by means of the IPoIB (IP over InfiniBand) protocol stack, using the Host Channel Adaper cards mounted on a 8-lanes PCI-Express bus of commodity PCs both as transmitters and receivers, thus measuring not only the capacity of the link itself, but also the effort required by the host CPUs, buses and Operating Systems. Using either the "Unreliable Datagram" or the "Reliable Connected" InfiniBand transfer modes, we measured the maximum achievable UDP data transfer throughput, the frame rate and the CPU loads of the sender/receiver processes and of the interrupt handlers as a function of the datagram size.

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Proceedings of International Symposium on Grids and Clouds (ISGC) 2016 — PoS(ISGC 2016), 2017

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EPJ Web of Conferences, 2020

iTHEPHY is an EU strategic partnership ERASMUS+ project aiming at developing innovative student-c... more iTHEPHY is an EU strategic partnership ERASMUS+ project aiming at developing innovative student-centred Deeper Learning Approaches (DPA) for students enrolled in particle physics master’s degree programmes. This paper describes the iTHEPHY project status and main goals attained, with a focus on a web-based virtual environment developed to support groups of students and teams of teachers during their DPA learning and teaching activities. The platform is described in detail, focusing on the methodologies and technologies which enabled to deliver a modular, user-friendly, open-source, scalable and reusable platform. Identity and Access Management are the building blocks installed for the iTHEPHY project. Different configurations of services in the cloud will be also covered.

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IEEE Transactions on Nuclear Science, 2010

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Il Nuovo Cimento C, 2009

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Journal of Physics: Conference Series, 2008

Database replication is a key topic in the framework of the LHC Computing Grid to allow processin... more Database replication is a key topic in the framework of the LHC Computing Grid to allow processing of data in a distributed environment. In particular, the LHCb computing model relies on the LHC File Catalog, i.e. a database which stores information about files spread across the GRID, their logical names and the physical locations of all the replicas. The LHCb computing model requires the LFC to be replicated at Tier-1s. The LCG 3D project deals with the database replication issue and provides a replication service based on Oracle Streams technology. This paper describes the deployment of the LHC File Catalog replication to the INFN National Center for Telematics and Informatics (CNAF) and to other LHCb Tier-1 sites. We performed stress tests designed to evaluate any delay in the propagation of the streams and the scalability of the system. The tests show the robustness of the replica implementation with performance going much beyond the LHCb requirements.

Bookmarks Related papers MentionsView impact

The LHCb experiment at CERN will have an online trigger farm composed of up to 2000 PCs. In order... more The LHCb experiment at CERN will have an online trigger farm composed of up to 2000 PCs. In order to monitor and control each PC and to supervise the overall status of the farm, a Farm Monitoring and Control System (FMC) was developed. The FMC is based on DIM (Distributed Information Management System) as network communication layer, it is accessible both through a command line interface and through the PVSS (Prozessvisualisierung und Steuerung) graphical interface, and it is interfaced to the Finite State Machine (FSM) of the LHCb Experiment Control System (ECS) in order to manage anomalous farm conditions. The FMC is an integral part of the ECS, which is in charge of monitoring and controlling all on-line components; it uses the same tools (DIM, PVSS, FSM, etc.) to guarantee its complete integration and a coherent look and feel throughout the whole control system.

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IEEE Transactions on Nuclear Science, 2006

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Abstract—In the prospect of employing 10 Gigabit Ethernet as networking technology for online sys... more Abstract—In the prospect of employing 10 Gigabit Ethernet as networking technology for online systems and offline data anal-ysis centers of High Energy Physics experiments, we performed a series of measurements with point-to-point data transfers over 10 Gigabit Ethernet links, ...

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IEEE Transactions on Nuclear Science, 2008

The LHCb experiment at CERN will have an on-line trigger farm composed of up to 2000 PCs. In orde... more The LHCb experiment at CERN will have an on-line trigger farm composed of up to 2000 PCs. In order to monitor and control each PC and to supervise the overall status of the farm, a farm monitoring and control system (FMC) was developed. The FMC is based on distributed information management (DIM) system as network communication layer, it is accessible

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IEEE Transactions on Nuclear Science, 2011

Amongst link technologies, InfiniBand has gained wide acceptance in the framework of High Perform... more Amongst link technologies, InfiniBand has gained wide acceptance in the framework of High Performance Computing (HPC), due to its high bandwidth and in particular to its low latency. Since InfiniBand is very flexible, supporting several kinds of messages, it is suitable, in principle, not only for HPC, but also for the data acquisition systems of High Energy Physics (HEP) Experiments. In order to check the InfiniBand capabilities in the framework of on-line systems of HEP Experiments, we performed measurements with point-to-point UDP data transfers over a 4-lane Double Data Rate InfiniBand connection, by means of the IPoIB (IP over InfiniBand) protocol stack, using the Host Channel Adapter cards mounted on a 8-lane PCI-Express bus of commodity PCs both as transmitters and receivers, thus measuring not only the capacity of the link itself, but also the effort required by the host CPUs, buses and Operating Systems. Using either the "Unreliable Datagram" or the "Reliable Connected" InfiniBand transfer modes, we measured the maximum achievable UDP data transfer throughput, the frame rate and the CPU loads of the sender/receiver processes and of the interrupt handlers as a function of the datagram size. Performance of InfiniBand in UDP point-to-point data transfer are then compared with that obtained with analogous tests per formed between the same PCs, using a 10-Gigabit Ethernet link.

Bookmarks Related papers MentionsView impact

ABSTRACT Amongst link technologies, InfiniBand has gained wide acceptance in the framework of Hig... more ABSTRACT Amongst link technologies, InfiniBand has gained wide acceptance in the framework of High Performance Com puting (HPC), due to its high bandwidth and in particular to its low latency. Since InfiniBand is very flexible, supporting several kinds of messages, it is suitable, in principle, not only for HPC, but also for the data acquisition systems of High Energy Physics (HEP) Experiments. In order to check the InfiniBand capabilities in the frame work of on-line systems of HEP Experiments, we performed measurements with point-to-point UDP data transfers over a 4-lane Double Data Rate InfiniBand connection, by means of the IPoIB (IP over InfiniBand) protocol stack, using the Host Channel Adaper cards mounted on a 8-lanes PCI-Express bus of commodity PCs both as transmitters and receivers, thus measuring not only the capacity of the link itself, but also the effort required by the host CPUs, buses and Operating Systems. Using either the "Unreliable Datagram" or the "Reliable Connected" InfiniBand transfer modes, we measured the maximum achievable UDP data transfer throughput, the frame rate and the CPU loads of the sender/receiver processes and of the interrupt handlers as a function of the datagram size.

Bookmarks Related papers MentionsView impact