scholarly journals Efficient GPU thread mapping on embedded 2D fractals

2020 ◽  
Vol 113 ◽  
pp. 158-169
Author(s):  
Cristobál A. Navarro ◽  
Felipe A. Quezada ◽  
Nancy Hitschfeld ◽  
Raimundo Vega ◽  
Benjamin Bustos
Keyword(s):  
Thread Mapping

scholarly journals Thread-Aware Mechanism to Enhance Inter-Node Load Balancing for Multithreaded Applications on NUMA Systems

2021 ◽  
Vol 11 (14) ◽  
pp. 6486
Author(s):  
Mei-Ling Chiang ◽  
Wei-Lun Su
Keyword(s):  
Load Balancing ◽  
Critical Path ◽  
Selection Procedure ◽  
Remote Memory ◽  
Data Mapping ◽  
Linux Kernel ◽  
Access Memory ◽  
Selection Policy ◽  
Benchmark Suite ◽  
Thread Mapping

NUMA multi-core systems divide system resources into several nodes. When an imbalance in the load between cores occurs, the kernel scheduler’s load balancing mechanism then migrates threads between cores or across NUMA nodes. Remote memory access is required for a thread to access memory on the previous node, which degrades performance. Threads to be migrated must be selected effectively and efficiently since the related operations run in the critical path of the kernel scheduler. This study focuses on improving inter-node load balancing for multithreaded applications. We propose a thread-aware selection policy that considers the distribution of threads on nodes for each thread group while migrating one thread for inter-node load balancing. The thread is selected for which its thread group has the least exclusive thread distribution, and thread members are distributed more evenly on nodes. This has less influence on data mapping and thread mapping for the thread group. We further devise several enhancements to eliminate superfluous evaluations for multithreaded processes, so the selection procedure is more efficient. The experimental results for the commonly used PARSEC 3.0 benchmark suite show that the modified Linux kernel with the proposed selection policy increases performance by 10.7% compared with the unmodified Linux kernel.

Dynamic Thread Mapping Based on Machine Learning for Transactional Memory Applications

2012 ◽  
pp. 465-476 ◽  
Author(s):  
Márcio Castro ◽  
Luís Fabrício Wanderley Góes ◽  
Luiz Gustavo Fernandes ◽  
Jean-François Méhaut
Keyword(s):  
Machine Learning ◽  
Transactional Memory ◽  
Memory Applications ◽  
Thread Mapping

A machine learning-based approach for thread mapping on transactional memory applications

2011 ◽  
Author(s):  
Marcio Castro ◽  
Luis Fabricio Wanderley Goes ◽  
Christiane Pousa Ribeiro ◽  
Murray Cole ◽  
Marcelo Cintra ◽  
...  
Keyword(s):  
Machine Learning ◽  
Transactional Memory ◽  
Memory Applications ◽  
Thread Mapping

Adaptive thread mapping strategies for transactional memory applications

2014 ◽  
Vol 74 (9) ◽  
pp. 2845-2859 ◽  
Author(s):  
Márcio Castro ◽  
Luís Fabrício W. Góes ◽  
Jean-François Méhaut
Keyword(s):  
Transactional Memory ◽  
Memory Applications ◽  
Thread Mapping
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