This paper presents the design of a global memory management architecture supporting application transparent migration of simulation objects (or LPs) whose state is scattered across dynamically allocated memory chunks. Our approach is based on a non-intrusive background protocol that provides each instance of the simulation kernel with information on the current mapping of the virtual address space of all the other instances. Dynamic memory requests by the application layer are then locally mapped onto virtual-address ranges that maximize the likelihood of being portable onto the address space of a remote kernel instance. In this way, independently of the load-balancing trigger (or policy), we maximize the likelihood that a desirable migration across a specific couple of kernels can actually take place due to compliance of the corresponding source/destination address spaces. We have integrated the global memory manager within the ROme OpTimistic Simulator (ROOT-Sim), namely a run-time environment based on the optimistic synchronization paradigm which automatically and transparently parallelizes the execution of event-handler based simulation programs conforming to ANSI-C. Further, we provide a contribution in the direction of widening load balancing schemes for optimistic simulation systems by defining migration triggers and selection policies for the objects to be migrated on the basis of memory usage patterns. An experimental assessment of the architecture and of memory oriented load balancing is also provided. © 2011 IEEE.

Application Transparent Migration of Simulation Objects with Generic Memory Layout / Peluso, Sebastiano; Diego, Didona; Quaglia, Francesco. - (2011), pp. 1-9. (Intervento presentato al convegno 25th ACM/IEEE/SCS Workshop on Principles of Advanced and Distributed Simulation (PADS) tenutosi a Nice; France nel JUN 14-17, 2011) [10.1109/pads.2011.5936755].

Application Transparent Migration of Simulation Objects with Generic Memory Layout

Peluso, Sebastiano;QUAGLIA, Francesco
2011

Abstract

This paper presents the design of a global memory management architecture supporting application transparent migration of simulation objects (or LPs) whose state is scattered across dynamically allocated memory chunks. Our approach is based on a non-intrusive background protocol that provides each instance of the simulation kernel with information on the current mapping of the virtual address space of all the other instances. Dynamic memory requests by the application layer are then locally mapped onto virtual-address ranges that maximize the likelihood of being portable onto the address space of a remote kernel instance. In this way, independently of the load-balancing trigger (or policy), we maximize the likelihood that a desirable migration across a specific couple of kernels can actually take place due to compliance of the corresponding source/destination address spaces. We have integrated the global memory manager within the ROme OpTimistic Simulator (ROOT-Sim), namely a run-time environment based on the optimistic synchronization paradigm which automatically and transparently parallelizes the execution of event-handler based simulation programs conforming to ANSI-C. Further, we provide a contribution in the direction of widening load balancing schemes for optimistic simulation systems by defining migration triggers and selection policies for the objects to be migrated on the basis of memory usage patterns. An experimental assessment of the architecture and of memory oriented load balancing is also provided. © 2011 IEEE.
2011
25th ACM/IEEE/SCS Workshop on Principles of Advanced and Distributed Simulation (PADS)
Address space; Application layers; Current mapping
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Application Transparent Migration of Simulation Objects with Generic Memory Layout / Peluso, Sebastiano; Diego, Didona; Quaglia, Francesco. - (2011), pp. 1-9. (Intervento presentato al convegno 25th ACM/IEEE/SCS Workshop on Principles of Advanced and Distributed Simulation (PADS) tenutosi a Nice; France nel JUN 14-17, 2011) [10.1109/pads.2011.5936755].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/443583
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