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R3-DLA (Reduce, Reuse, Recycle): A More Efficient Approach to Decoupled Look-Ahead Architectures
[article]
2018
arXiv
pre-print
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Exploiting implicit parallelism to provide automatic performance improvement remains a central goal in engineering future general-purpose computing systems. ...
One approach is to use a separate thread context to perform continuous look-ahead to improve the data and instruction supply to the main pipeline. ...
When a branch prediction fed by LT turns out wrong, which is relatively rare (0.06 per kilo instructions), it means that LT is executing down the wrong path. ...
arXiv:1812.04514v3
fatcat:lqezt4digbes7jmd6nfsymkhrq
SYRANT: SYmmetric resource allocation on not-taken and taken paths
2012
ACM Transactions on Architecture and Code Optimization (TACO)
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Une nouvelle technique exploitant l'indépendance de contrôle est présentée dans ce rapport. ...
Ainsi, lors d'une mauvaise prédiction, le travail déjà effectué sur le mauvais chemin et situé après le point de reconvergence peut être conservé. ...
The speculative execution of the branches on the wrong path could be exploited to enhance branch prediction after branch misprediction recovery. ...
doi:10.1145/2086696.2086722
fatcat:bnkn3hbuxjcalcnp4zeijhg4oq
The impact of incorrectly speculated memory operations in a multithreaded architecture
2005
IEEE Transactions on Parallel and Distributed Systems
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The speculated execution of threads in a multithreaded architecture, plus the branch prediction used in each thread execution unit, allows many instructions to be executed speculatively, that is, before ...
We find that incorrect speculation (wrong execution) on the instruction and thread-level provides an indirect prefetching effect for the later correct execution paths and threads. ...
Their suggestions helped us to improve the presentation of this paper significantly. ...
doi:10.1109/tpds.2005.36
fatcat:prajemixvvhvjokg67ai2hgtsq
CIRC-PACK_D6.4_Legislative barriers for the recycling of fossil based and biobased plastics for packaging and policy recommendations
2020
Zenodo
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CIRC-PACK WP6 (task 6.3): Legislative barriers for the recycling of fossil based and biobased plastics for packaging and policy recommendations ...
A wrong method of sorting could be a risk for health and safety. ...
Plastics packaging is a priority area when it comes to design for recyclability. one of the keys to improve recycling levels. ...
doi:10.5281/zenodo.3922070
fatcat:jshxewwpo5dr7hdlbdxcty6iey
Coming challenges in microarchitecture and architecture
2001
Proceedings of the IEEE
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Furthermore, as CMOS technology continues to advance, microprocessor design is exposed to a new set of challenges. ...
While the pace of this progress has been quite impressive over the last two decades, it has become harder and harder to keep up this pace. ...
When the branch is resolved, the wrong path is flushed. Eager execution should use a confidence mechanism to determine the likelihood of a branch to be mispredicted [32] . ...
doi:10.1109/5.915377
fatcat:iywintmu5jeltngkqn6h3ryh7u
Architecture of Embedded Microprocessors
[chapter]
2005
Multiprocessor Systems-on-Chips
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Data-level parallelism and regular control flow in streaming applications has led engineers to base many DSPs on the very long instruction word (VLIW) execution model [149], which encodes regular parallelism ...
in an efficient and predictable way. ...
In power-constrained embedded systems, performance gains of branch prediction must be weighed against the waste of power caused by squashing wrong-path instructions.
4-11 FIGURE An incorrect branch ...
doi:10.1016/b978-012385251-9/50018-9
fatcat:smv3zphpnjfvrh5mslzjvgz4fa
Transparent control independence (TCI)
2007
Proceedings of the 34th annual international symposium on Computer architecture - ISCA '07
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Superscalar architectures have been proposed that exploit control independence, reducing the performance penalty of branch mispredictions by preserving the work of future misprediction-independent instructions ...
The essential goal of exploiting control independence is to completely decouple future misprediction-independent instructions from deferred misprediction-dependent instructions. ...
Predication fetches both CD paths of a correctly predicted branch, thereby wasting fetch and execution bandwidth on the alternate CD path, and also needlessly delays the execution of the CIDD
First thesis ...
doi:10.1145/1250662.1250717
dblp:conf/isca/Al-ZawawiRRA07
fatcat:yhnymgwllvbkfnegvjv4vzc5fu
SEED
2006
Proceedings of the 15th international conference on Parallel architectures and compilation techniques - PACT '06
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Conventional designs rely on atomic wakeup-select cycles to ensure compact scheduling. ...
Compared to a conventional issue queue design, which is assumed favorably to scale in size without any impact on cycle time, the performance degradation of our design is 3% for both INT and FP suites of ...
When a basic block is committed, its ID is recycled. (BBIDs allocated to wrong-path blocks will be recycled when the first subsequent right-path block is committed.) ...
doi:10.1145/1152154.1152193
dblp:conf/IEEEpact/Mesa-MartinezHR06
fatcat:6j7xgjn7nzdwpdzynt7vu5ywne
Social Contracts and Informal Workers in the Global South
[chapter]
2022
Extended Producer Responsibility: opportunities and challenges for waste pickers
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paid by informal workers in Accra, Ghana 4.2 Mean and median effective tax rates by income quintile 4.3 Reported preference for high vs low taxes 4.4 Reported reasons for tax non-compliance 9.1 Ability to ...
and executing strategies (Schmalz et al. 2018) . ...
and recycle waste and space to sort, store, bundle and process waste; with private waste collection companies to access waste; and with scrap dealers or industries which buy reclaimed waste. ...
doi:10.4337/9781839108068
fatcat:vzsmz6d5y5ccjfiyh2z5uxshfy
Recycling of Valuable Metals from Poly Cracker Ash of Printed Circuit Boards (PCBS) by Physical Beneficiation and Hydrometallurgical Treatment
[chapter]
2014
EPD Congress 2014
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I should like to express our deep appreciation of the hard work and devotion to duty of Dr. B. R. Nijhawan, Director of the Laboratory, and his colleagues. ...
A novel two stage smelting process has been developed to recover manganese as ferro-silico-manganese. A pilot plant to process 350 kg/ day leached residue has been set up. ...
In particular our joint research in the area of metal recycling from E-waste is poised to establishing the sustainable future society in both countries. ...
doi:10.1002/9781118889664.ch66
fatcat:trqkj7a2m5fbhlspu6bsbne5sm
Alumina Addition to Fluoride Slags for Recycling of Low Oxygen High Conductivity Copper Scrap through Electroslag Crucible Melting
1998
ISIJ International
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I should like to express our deep appreciation of the hard work and devotion to duty of Dr. B. R. Nijhawan, Director of the Laboratory, and his colleagues. ...
A novel two stage smelting process has been developed to recover manganese as ferro-silico-manganese. A pilot plant to process 350 kg/ day leached residue has been set up. ...
In particular our joint research in the area of metal recycling from E-waste is poised to establishing the sustainable future society in both countries. ...
doi:10.2355/isijinternational.38.1387
fatcat:oxo7u4k7tjcvjgd4f4gjrxzpme
CAVA
2006
ACM Transactions on Architecture and Code Optimization (TACO)
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Specifically, the value prediction engine is located close to the L2 cache, off the critical path, and is trained only with L2 misses. ...
Ceze et al. a confidence estimator to minimize wasted work on rollbacks because of mispeculations. ...
Examples are loads that follow the wrong path of a branch, or loads that need to be replayed to satisfy the memory consistency model or other conditions. ...
doi:10.1145/1138035.1138038
fatcat:b7gutp6sjndbxfjk4v4mckejme
Squash Reuse via a Simplified Implementation of Register Integration
2001
Journal of Instruction-Level Parallelism
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Integration also reduces the amount of wasteful speculation in the machine, cutting the number of instructions executed by up to 17% and the number of instructions fetched along mis-speculated paths by ...
Integration reduces contention for execution resources, collapses dependent chains of operations and accelerates branch resolution. ...
The authors thank the anonymous reviewers, whose comments helped improve this manuscript. ...
dblp:journals/jilp/RothS01
fatcat:nbqpyisxc5ehhiabk2tjey4j7q
Precise Runahead Execution
2020
2020 IEEE International Symposium on High Performance Computer Architecture (HPCA)
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A recent improvement tracks the chain of instructions that leads to the long-latency load, stores it in a runahead buffer, and executes only this chain during runahead execution, with the purpose of generating ...
Runahead execution improves processor performance by accurately prefetching long-latency memory accesses. ...
If a branch instruction in the ROB turns out to be mispredicted, the processor discards all wrong-path instructions (including runahead instructions, if any), flushes the pipeline, and resumes normal execution ...
doi:10.1109/hpca47549.2020.00040
dblp:conf/hpca/NaithaniFAE20
fatcat:2x7rql4xi5dufdohvxn2eg3k4q
Food for Thought: Applying Behavioural Insights to Household Food Waste Recycling Behaviour
2020
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sustained influence on household food waste recycling behaviour. ...
Local authorities, who are responsible for waste management, have historically relied on changes to physical infrastructure or informational interventions to drive performance improvements. ...
Waste policy in the 1990s and 2000s largely focussed on improving dry recycling rates, with weight-based recycling targets leading to an almost exclusive focus on dry recycling over waste prevention and ...
doi:10.15126/thesis.00853724
fatcat:atje3yxzvrebjd63yrhv2d7h64
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