Implementing control in parallel programs by synchronization-driven activation and cancellation

Borkowski, Janusz; Kopanski, D.; Tudruj, Marek

doi:10.1109/empdp.2003.1183605

Cited by 10 publications

(6 citation statements)

References 9 publications

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“…We want the processes to be able to react on signals possibly immediately by clearly defined actions. These goals are met by asynchronous activation and cancellation [B01,BKT03]. In the code of a process, designated regions are made sensitive to incoming signals.…”

Section: Fig 1 -Computation Of Processes With a Synchronizermentioning

confidence: 99%

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Synchronization Based on Global States as a General Control Method in Parallel Programs

Borkowski¹,

Tudruj²,

Kopanski³

2014

IJC

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New parallel program synchronization mechanisms are presented. A specialized synchronizer process, or a hierarchy of such processes, gather information about process states and construct Strongly Consistent Global States, using time interval timestamps. Global predicates evaluated by synchronizers can cause synchronization signals to be sent to processes, the signals trigger asynchronous computation activation or cancellation. The proposed framework is integrated with a message passing system - it is added to the GRADE graphical parallel programming environment to enhance its message-passing based features. Architecture and implementation of the enhancement are discussed.

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Section: Fig 1 -Computation Of Processes With a Synchronizermentioning

confidence: 99%

“…GRADE produces C programs based on standard PVM/MPI libraries. In general, such programs cannot be asynchronously interrupted to run a procedure and then to resume previous actions [BKT03]. MPI, PVM, and numerous standard C library procedures are not re-entrant.…”

Section: Fig 7 -A Synchronizer Windowmentioning

confidence: 99%

Synchronization Based on Global States as a General Control Method in Parallel Programs

Borkowski¹,

Tudruj²,

Kopanski³

2014

IJC

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“…Fig 2 illustrates both situations. More information about details of the PS-GRADE can be found in papers [5][6][7]. …”

Section: Introductionmentioning

confidence: 99%

“…The control is based on predicates computed on execution states of component applications. These states are monitored inside each application by special control processes called synchronizers -a feature included into a special P-GRADE version called PS-GRADE [5][6][7]. We describe the extension of the PS-GRADE towards Grid.…”

Section: Introductionmentioning

confidence: 99%

Application control on grid using predicates defined on global states of co-operating parallel programs

Borkowski

Kopanski

Tudruj

2006

14th Euromicro International Conference on Parallel, Distributed, and Network-Based Processing (PDP'06)

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The paper concerns adaptation of the graphical parallel programming environment PS-GRADE based on advanced global synchronization and control mechanisms to Grid-level application control. We propose that program execution control by synchronizers known at the process level is extended and used to coordinate parallel applications executed on Grid. We introduce explicit inter-application, or Grid-level, synchronizers. The Grid-level synchronizers generate application execution control decisions based on predicates computed on global application states. They co-operate with application level synchronizers, which are able to send state reports and receive control signals over Grid communication network. In the proposed solution, the application workflow paradigm has been enriched to enable designing more flexible control between otherwise independent applications. We discuss types of Grid applications whose global control can be implemented by the use of synchronizers-based infrastructure. An application example illustrates the proposed control design strategy.

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“…Much less attention is paid to parallel application on-line control and synchronization based on global predicates [MW91,BKT03]. Modality Instantly is particularly suitable for this purpose [B03], as it deals with actual and current application states and it can be applied with a low overhead.…”

Section: Motivations For An Enhanced Algorithmmentioning

confidence: 99%

Strongly consistent global states detection using relative clock errors

Borkowski

Second International Symposium on Parallel and Distributed Computing, 2003. Proceedings.

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Observation of global states is of a great importance in the area of distributed systems monitoring. Global states constructed with the use of real time timestamps involve small communication and computational cost and therefore are suitable for monitoring large systems. Properties of Strongly Consistent Global States (SCGS) make them especially useful for on-line monitoring and direct application control. SCGS detection depends heavily on clock synchronization quality. This quality can be improved easily (or it is very good already) locally, within a subset of processes. A SCGS detection algorithmexploiting local fine synchronization is presented. It detects more states than a usual algorithm allowing for more strict control over a monitored application.

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Implementing control in parallel programs by synchronization-driven activation and cancellation

Cited by 10 publications

References 9 publications

Synchronization Based on Global States as a General Control Method in Parallel Programs

Synchronization Based on Global States as a General Control Method in Parallel Programs

Application control on grid using predicates defined on global states of co-operating parallel programs

Strongly consistent global states detection using relative clock errors

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