| 1. |
- Capannini, Gabriele, et al.
(författare)
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Thou Shalt Not Move : A Visibility-based Emergency Stop System for Smart Industries
- 2021
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : Association for Computing Machinery. - 9781450390576
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Konferensbidrag (refereegranskat)abstract
- Nowadays, industries are crowded with automatized machinery and robots that interact with human operators. In addition to other safety measures already present, we propose a further tool to equip such working places with a visibility-based emergency stop system that only affects those machines that are visible from the position of an emergency stop button when it is pressed. This paper presents the realization of such a system and the preliminary results collected from the conducted scalability experiments.
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| 2. |
- Halilovic, Amar, et al.
(författare)
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Multi-constrained Network Occupancy Optimization
- 2021
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : Association for Computing Machinery. - 9781450390576
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Konferensbidrag (refereegranskat)abstract
- The greater the number of devices on a network, the higher load in the network, the more chance of a collision occurring, and the longer it takes to transmit a message. The size of load can be identified by measuring the network occupancy, hence it is desirable to minimize the latter. In this paper, we present an approach for network occupancy minimization by optimizing the packing process while satisfying multiple constraints. We formulate the minimization problem as a bin packing problem and we implement a modification of the Best-Fit Decreasing algorithm to find the optimal solution. The approach considers grouping signals that are sent to different destinations in the same package. The analysis is done on a medium-sized plant model, and different topologies are tested. The results show that the proposed solution lowers the network occupancy compared to a reference case.
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| 3. |
- Imtiaz, Shamoona, et al.
(författare)
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Towards Automatic Application Fingerprinting Using Performance Monitoring Counters
- 2021
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : Association for Computing Machinery. - 9781450390576
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Konferensbidrag (refereegranskat)abstract
- In this paper, we discuss a method for application fingerprinting using conventional hardware and software performance counters. Modern applications are complex and often utilizes a broad spectra of the available hardware resources, where multiple performance counters can be of significant interest. The number of performance counters that can be captured simultaneously is, however, small due to hardware limitations in most modern computers. We propose to mitigate the hardware limitations using an intelligent mechanism that pinpoints the most relevant performance counters for an application's performance. In our proposal, we utilize the Pearson correlation coefficient to rank the most relevant PMU events and filter out events of less relevance to an application's execution. Our ultimate goal is to establish a comparable application fingerprint model using performance counters, that we can use to classify applications. The classification procedure can then be used to determine the type of application's fingerprint, such as malicious software.
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| 4. |
- Mäki-Turja, Jukka, 1967-, et al.
(författare)
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On Sustainability for Offset Based Response-Time Analysis
- 2021
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : Association for Computing Machinery. - 9781450390576
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Konferensbidrag (refereegranskat)abstract
- It is known that offsets in general are not sustainable, i.e., if offsets in a system are modified it is not trivial to determine if this affects schedulability or not. In this paper we investigate if there are situations where offsets can be deemed sustainable, i.e., situations where one can safely modify an offset without impairing schedulability. We introduce, for the approximate Response-Time Analysis, a concept of a subsumes relation between demand bound functions and show that if offsets are modified in such a way that the modified demand bound function is subsumed by the original demand bound function, then the modification is sustainable. We show an example of how this information can be used in an engineering context where all system parameters are fixed but offsets. We generate all transaction that are subsumed by a schedulable transaction and merge this information in a presentable form for the engineer. This information can be used to safely modify the transaction or to investigate the robustness of the schedulability.
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| 5. |
- Seceleanu, Cristina, 1968-, et al.
(författare)
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Assured Cloud Platforms for Industrial Cyber-Physical Systems : The ACICS Approach
- 2021
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : Association for Computing Machinery. - 9781450390576
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Konferensbidrag (refereegranskat)abstract
- With the emergence of "Industry 4.0", the integration of cloud technologies and industrial cyber-physical systems becomes increasingly important to boost productivity. The industrial cyber-physical systems infrastructures and their fusion with the cloud lead to massive amounts of data acquired for controlling particular processes, but also for supporting decision-making. Although cloud-assisted systems are increasingly important in many domains, and ensuring their dependability is crucial, existing platforms do not provide satisfactory support to meet the dependability demands of industrial applications. The overall goal of the ACICS project is to provide models, methods and tools that facilitate a substantial increase of dependability of cloud-based platforms for industrial cyber-physical applications, with respect to consistency, security and interoperability of data, timing predictability of using shared virtual resources, together with a framework of guaranteeing quality-of-service enforcement by formal analysis and verification. In this paper, we present the main conceptual ideas behind the ACICS approach.
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| 6. |
- Tsog, Nandinbaatar, et al.
(författare)
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Supporting Autonomous Vehicle Applications on the Heterogeneous System Architecture
- 2021
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : Association for Computing Machinery. - 9781450390576
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Konferensbidrag (refereegranskat)abstract
- The contemporary processors are unable to meet the increasing data-intensive and computation-demanding requirements in autonomous vehicle software applications. Recently, the new Heterogeneous System Architecture (HSA) has emerged as a promising solution to meet these requirements. The HSA reduces the latency of data exchange between the compute units and cache-coherent shared memory, which is not supported by the non-HSA compliant heterogeneous platforms with acceleration support. The main goal of the paper is to investigate the performance gain by the HSA and conduct a comparative evaluation of the HSA and non-HSA compliant heterogeneous platforms. The paper aims at evaluating these platforms by using two computation-intensive software functions in autonomous vehicles, namely the object detection and vehicle movement. In order to achieve this goal, the CUDA-accelerated source code of the functions is ported from a non-HSA compliant heterogeneous platform to the HSA platform. In this regard, the paper presents the architecture of a proof-of-concept prototype and provides evaluation using the prototype.
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