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A case for user-level dynamic page migration
2000
Proceedings of the 14th international conference on Supercomputing - ICS '00
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This paper presents user-level dynamic page migration, a runtime technique which transparently enables parallel programs to tune their memory performance on distributed shared memory multiprocessors, with ...
We also present a new technique for preventing page pingpong and a mechanism for monitoring the performance of page migration algorithms at runtime and tuning their sensitive parameters accordingly. ...
As a consequence, the use of dynamic page migration in contemporary operating systems for scalable NUMA multiprocessors is either discouraged or limited to trivial cases, such as the replication of kernel ...
doi:10.1145/335231.335243
dblp:conf/ics/NikolopoulosPPLA00
fatcat:cc4ck37on5fdvdygx2f54mpn64
Is Data Distribution Necessary in OpenMP?
2000
ACM/IEEE SC 2000 Conference (SC'00)
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We also show that performance leaks stemming from suboptimal page placement schemes can be remedied with a smart user-level page migration engine. ...
The main body of the paper describes how the OpenMP runtime environment can use page migration for implementing implicit data distribution and redistribution schemes without programmer intervention. ...
User-level dynamic page migration To investigate the issues stated before, we have developed a runtime system called UPMlib (user-level page migration library), which injects a dynamic page migration engine ...
doi:10.1109/sc.2000.10025
dblp:conf/sc/NikolopoulosPPLA00
fatcat:rtv6tp4gofgitclqgk3dennrtm
A Transparent Runtime Data Distribution Engine for OpenMP
2000
Scientific Programming
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Second, the paper presents a transparent, user-level page migration engine with an ability to gain back any performance loss that stems from suboptimal placement of pages in iterative OpenMP programs. ...
The main body of the paper describes how our OpenMP runtime environment uses page migration for implementing implicit data distribution and redistribution schemes without programmer intervention. ...
The same work proposed a complete kernel-level implementation of a dynamic page migration engine and evaluated it using accurate machine-level simulation. ...
doi:10.1155/2000/417570
fatcat:54ksufgvujh5tpxrxlfoigiclu
Leveraging Transparent Data Distribution in OpenMP via User-Level Dynamic Page Migration
[chapter]
2000
Lecture Notes in Computer Science
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We have implemented a runtime system called UPMlib, which allows the compiler to inject into the application a smart user-level page migration engine. ...
The vehicle for implementing these facilities in OpenMP without modifying the programming model or exporting data distribution details to the programmer is user-level dynamic page migration [9,10]. ...
dynamic page migration at user-level. ...
doi:10.1007/3-540-39999-2_40
fatcat:e7tdiomq3nc6bgemkkuufaacfi
Evaluation of the memory page migration influence in the system performance
2003
Proceedings of the 17th annual international conference on Supercomputing - ICS '03
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To reduce the impact of a bad initial memory placement, some operating systems offer a dynamic memory migration mechanism. ...
In this paper, we want to demonstrate that memory migration mechanisms are a useful approach, but that their performance depends more on related issues, such as the processor scheduling, than on the mechanism ...
Although this execution environment is so hard for the applications to obtain performance, the authors show that, in this case, their proposal for dynamic page migrations implemented from user-level provides ...
doi:10.1145/782814.782833
dblp:conf/ics/CorbalanML03
fatcat:t6bjbcuygvh33pm5y4xtkmplly
Evaluation of the memory page migration influence in the system performance
2003
Proceedings of the 17th annual international conference on Supercomputing - ICS '03
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To reduce the impact of a bad initial memory placement, some operating systems offer a dynamic memory migration mechanism. ...
In this paper, we want to demonstrate that memory migration mechanisms are a useful approach, but that their performance depends more on related issues, such as the processor scheduling, than on the mechanism ...
Although this execution environment is so hard for the applications to obtain performance, the authors show that, in this case, their proposal for dynamic page migrations implemented from user-level provides ...
doi:10.1145/782832.782833
fatcat:2iss3j5ytja4dpifvm3u47zp7a
Scheduler-Activated Dynamic Page Migration for Multiprogrammed DSM Multiprocessors
2002
Journal of Parallel and Distributed Computing
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This paper presents a novel dynamic page migration algorithm that remedies this problem in iterative parallel programs. ...
The key mechanism that enables timely identification of these pages is a communication interface between the page migration engine and the operating system scheduler. ...
ACKNOWLEDGMENT We thank the journal referees for their insightful comments, which helped us improve the paper considerably. ...
doi:10.1006/jpdc.2001.1817
fatcat:mm4g6niwc5e4dn4adqub77grbu
Geographical Locality and Dynamic Data Migration for OpenMP Implementations of Adaptive PDE Solvers
[chapter]
2008
Lecture Notes in Computer Science
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The main conclusions of the study are: (1) that geographical locality is very important for the performance of the solver, (2) that the performance can be improved significantly using dynamic page migration ...
of misplaced data, (3) that a migrate-on-next-touch directive works well whereas the first-touch strategy is less advantageous for programs exhibiting a dynamically changing memory access patterns, and ...
In Solaris, dynamic migration of pages between nodes can be performed using a directive with a migrate-on-next-touch semantic using the madvise(3C) library call [20] . ...
doi:10.1007/978-3-540-68555-5_31
fatcat:5grtv5jzrzdkfpzbg3fghhitha
Sentinel: Runtime Data Management on Heterogeneous Main MemorySystems for Deep Learning
[article]
2019
arXiv
pre-print
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To achieve this,Sentinel exploits domain knowledge about deep learning to adopt a custom approach for data management. ...
Sentinel leverages workload repeatability to break the dilemma between profiling accuracy and overhead; It enables profiling and data migration at the granularity of data objects (not pages), by controlling ...
Using this method, page-level profiling becomes data object-level profiling. ...
arXiv:1909.05182v1
fatcat:vh27yunrjndo7nzp34aqdy2xnu
Memos: Revisiting Hybrid Memory Management in Modern Operating System
[article]
2017
arXiv
pre-print
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Powered by our newly designed kernel-level monitoring module and page migration engine, memos can dynamically optimize the data placement at the memory hierarchy in terms of the on-line memory patterns ...
Generally, Fig.1 tells us, for a specific page, the WD/RD and Hot/Cold patterns may change during run time, and thus a dynamic mechanism is needed to migrate data across NVM and DRAM. ...
In case 3, memos migrates a hot/WD page from NVM to DRAM across channels. ...
arXiv:1703.07725v1
fatcat:wzdseqs4pbc7nozfejrllqszl4
Migrating Multi-page Web Applications to Single-page AJAX Interfaces
2007
11th European Conference on Software Maintenance and Reengineering (CSMR'07)
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Our approach, using a schema-based clustering technique, extracts a navigational model of web applications, and identifies candidate user interface components to be migrated to a single-page AJAX interface ...
If until a year ago, the concern revolved around migrating legacy systems to web-based settings, today we have a new challenge of migrating web applications to single-page AJAX applications. ...
Acknowledgments This work received partial support from Sen-terNovem, project Single Page Computer Interaction (SPCI). We thank the anonymous referees for their valuable comments. ...
doi:10.1109/csmr.2007.33
dblp:conf/csmr/MesbahD07
fatcat:tirmwzs7rrgjpcasgzxbldptpq
Data placement in HPC architectures with heterogeneous off-chip memory
2013
2013 IEEE 31st International Conference on Computer Design (ICCD)
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Our results show that the hybrid memory system with dynamic page migration and limited DRAM capacity, can achieve performance that is comparable to a hypothetical, hard to implement, DRAM-only system. ...
In this paper, we propose an architecture with a hybrid memory design that places two technologically different memory modules in a flat address space. ...
Dynamic page migration Finally, a Dynamic policy introduces page migration in the other direction (from PCM to DRAM), denoted as backmigration. ...
doi:10.1109/iccd.2013.6657042
dblp:conf/iccd/PavlovicPR13
fatcat:ruw362p5pndu5jrjol5qojdicy
Understanding the Behavior of Pthread Applications on Non-Uniform Cache Architectures
2011
2011 International Conference on Parallel Architectures and Compilation Techniques
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In this paper, we take existing parallel programs written in Pthreads, and show the performance gap between current static mapping schemes, costly migration schemes and idealized static and dynamic best-case ...
Future scalable multi-core chips are expected to implement a shared last-level cache (LLC) with banks distributed on chip, forcing a core to incur non-uniform access latencies to each bank. ...
We intend to pursue the following optimizations to improve the performance of the code using a softwareonly strategy: (1) using thread-private storage when safe for stack and local, dynamically-allocated ...
doi:10.1109/pact.2011.26
dblp:conf/IEEEpact/SachdevSHB11
fatcat:oukhzso76vc7noqenro5umr2p4
Improving Data Locality Using Dynamic Page Migration Based on Memory Access Histograms
[chapter]
2002
Lecture Notes in Computer Science
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The approach is based on run-time data redistribution via user-level page migration. ...
First performance experiments on several applications show the potential for a significant gain in speedup. ...
Improving Data Locality Using Dynamic Page Migration tion tool, a deep insight into the memory access patterns of the application and thereby enables further optimizations. ...
doi:10.1007/3-540-46080-2_98
fatcat:kgaydtgd55fhto2nwbscakfb5y
An Operating System Level Data Migration Scheme in Hybrid DRAM-NVM Memory Architecture
[article]
2018
arXiv
pre-print
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In the proposed scheme, two Least Recently Used (LRU) queues, one for DRAM section and one for NVM section, are used for the sake of data migration. ...
This paper presents an efficient data migration scheme at the Operating System level in a hybrid DRAMNVM memory architecture. ...
In addition to the traditional moving pages in case of a miss or evicting a data page, hybrid memories have migrations between two memories. ...
arXiv:1805.02514v1
fatcat:s3xdo5xpqrgclnnfaqhpvwj5fm
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