Memory Mode Research Articles

MOCKERY AS A METHOD FOR REVEALING INDIGENOUS IDENTITY IN THE WORKS OF SHERMAN ALEXIE

It is considered that postmodern native writers in North America have payed attention to the most important problems for indigenous tribes in Indian reservations as maintaining their historical memory through saving Indian history and culture of each tribe, as a native uniqueness to save numerous small tribes in America. Sherman Alexie uncovers a number of historical, social, cultural, economic drawbacks for a harmonic growth of young Indian people in North America. He produces his special prescription how to enhance conscience of harmful entrapment and care of Indian tribe identity value. The author tries to appeal to the special memory mode as unique approach to keep their indigenous identity. The texts of Sherman Alexie novels comprise special literature tools with the help of which he brings a light to difference in conscious understanding of vital problems by indigenous and white men. Sherman Alexie charges his novels and dialogues with humor, irony, mockery and kitsch as offensive instruments in struggle with mainstream cultural policy. These ones have created an effect of cultural resistance aesthetics. Due to these approaches the Sherman Alexie’s heroes earn our attention involving readers into the game to be participants of their stories and make assessment of the fistfight in the heaven of the representatives as mainstream as indigenous America. The writer’s voice acquires offensive force with intensive irony used with a light shadow and tough, dark one. Such light and though irony can be defined as mockery which is used by young people to show up attitude to main values of indigenous population in North America. Mockery can be as literature tropes containing valuable irony, parody that have all quality ranks from light to aggressive. Because of such special features as camouflage it may be evaluated as kitsch in some sense according to text samples. With various forms of mockery and kitsch, Sherman Alexie envisages main objectives related to native identity. Because imagination and mockery can be only real tools to guard indigenous population status enlightened by the author, it may be concluded that usage of mockery serves as a marker for revealing of indigenous identity in the works of Sherman Alexie.

IMFlexCom

In this article, we propose an <u>I</u>n-<u>M</u>emory <u>Flex</u>ible <u>Com</u>puting platform (IMFlexCom) using a novel Spin Orbit Torque Magnetic Random Access Memory (SOT-MRAM) array architecture, which could work in dual mode: memory mode and computing mode. Such intrinsic in-memory logic (AND/OR/XOR) could be used to process data within memory to greatly reduce power-hungry and long distance massive data communication in conventional Von Neumann computing systems. A comprehensive reliability analysis is performed, which confirms ∼90mV and ∼10mV (worst-case) sense margin for memory and in-memory logic operation in variations on resistance-area product and tunnel magnetoresistance. We further show that sense margin for in-memory logic computation can be significantly increased by increasing the oxide thickness. Furthermore, we employ bulk bitwise vector operation and data encryption engine as case studies to investigate the performance of our proposed design. IMFlexCom shows ∼35× energy saving and ∼18× speedup for bulk bitwise in-memory vector AND/OR operation compared to DRAM-based in-memory logic. Again, IMFlexCom can achieve 77.27% and 85.4% lower energy consumption compared to CMOS-ASIC- and CMOL-based Advanced Encryption Standard (AES) implementations, respectively. It offers almost similar energy consumption as recent DW-AES implementation with 66.7% less area overhead.

Some useful optimisations for unstructured computational fluid dynamics codes on multicore and manycore architectures

This paper presents a number of optimisations for improving the performance of unstructured computational fluid dynamics codes on multicore and manycore architectures such as the Intel Sandy Bridge, Broadwell and Skylake CPUs and the Intel Xeon Phi Knights Corner and Knights Landing manycore processors. We discuss and demonstrate their implementation in two distinct classes of computational kernels: face-based loops represented by the computation of fluxes and cell-based loops representing updates to state vectors. We present the importance of making efficient use of the underlying vector units in both classes of computational kernels with special emphasis on the changes required for vectorising face-based loops and their intrinsic indirect and irregular access patterns. We demonstrate the advantage of different data layouts for cell-centred as well as face data structures and architectural specific optimisations for improving the performance of gather and scatter operations which are prevalent in unstructured mesh applications. The implementation of a software prefetching strategy based on auto-tuning is also shown along with an empirical evaluation on the importance of multithreading for in-order architectures such as Knights Corner. We explore the various memory modes available on the Intel Xeon Phi Knights Landing architecture and present an approach whereby both traditional DRAM as well as MCDRAM interfaces are exploited for maximum performance. We obtain significant full application speed-ups between 2.8 and 3X across the multicore CPUs in two-socket node configurations, 8.6X on the Intel Xeon Phi Knights Corner coprocessor and 5.6X on the Intel Xeon Phi Knights Landing processor in an unstructured finite volume CFD code representative in size and complexity to an industrial application. Program summaryProgram Title: some_opt_for_unstructured_cfdProgram Files doi:http://dx.doi.org/10.17632/zyh2zkf3jw.1Licensing provisions: GNU General Public License 3 (GPL)Programming language: C/C++Nature of problem: The solution of fluid flow problems in the vicinity of complex geometries mandates the utilisation of unstructured grids. However, this flexibility of unstructured mesh methods in dealing with complicated geometries comes at a cost of increased difficulty in extracting high performance out of modern processors. We provide implementations for a number of optimisations useful for improving the performance of unstructured CFD codes on modern multicore and manycore architectures.Solution method: grid renumbering via Reverse Cuthill–Mckee, code transformations necessary for enabling vectorisation, face colouring/reordering for removing dependencies at the face end-points when accumulating residuals, data layout transformations for reducing cache misses, hand-tuned gather and scatter primitives for in-register transpositions, software prefetching via auto-tuning and multithreading for exploiting SMT features of modern processors.

Compact 3D quantum memory

Superconducting 3D microwave cavities offer state-of-the-art coherence times and a well-controlled environment for superconducting qubits. In order to realize at the same time fast readout and long-lived quantum information storage, one can couple the qubit to both a low-quality readout and a high-quality storage cavity. However, such systems are bulky compared to their less coherent 2D counterparts. A more compact and scalable approach is achieved by making use of the multimode structure of a 3D cavity. In our work, we investigate such a device where a transmon qubit is capacitively coupled to two modes of a single 3D cavity. External coupling is engineered so that the memory mode has an about 100 times larger quality factor than the readout mode. Using an all-microwave second-order protocol, we realize a lifetime enhancement of the stored state over the qubit lifetime by a factor of 6 with a fidelity of approximately 80% determined via quantum process tomography. We also find that this enhancement is not limited by fundamental constraints.

Strength of resting-state functional connectivity associated with performance-adjustment ability

Erroneous behavior is usually, although not always, inhibited following a negative outcome (e.g., a penalty), although this adjusting behavior is highly varied. Here we aimed to identify brain regions associated with successful behavioral adjustment to negative feedback, and the intrinsic functional connectivity associated with individual variability in such adjustments, using combined task-based and resting-state functional magnetic resonance imaging (MRI). Functional MRI data were obtained from 28 young adults performing a visuomotor associative learning task, wherein participants learned by trial and error to make one of four key responses to each of 24 English letters. All preceding error response trials were sorted post hoc, based on whether the error response was repeated (Error-Repeated) or not (Error-Changed) for the subsequent trial with the same stimulus, and the rate of error adjustment for each individual was computed as the number of Error-Changed trials divided by all error trials. We identified two brain regions, the right dorsal anterior cingulate cortex (dACC) and dorsolateral prefrontal cortex (DLPFC), whose brain response was significantly greater for Error-Changed than Error-Repeated trials. Stronger anti-correlation between the right dACC seed and right amygdala and between the DLPFC seed and the paracentral gyrus and inferior temporal region extending to the hippocampus was associated with better adjustment ability. These results suggest that the stronger anticorrelated relationship between the error monitoring region and emotional processing and that between the executive control region with those involved in memory or default mode network reflect individual variability in error adjustment.

An implementation of direct linear equation solver using a many-core CPU for mechanical dynamic analysis

This research proposes an effective implementation of linear equation solver for an implicit integration on a many-core CPU. Although this implementation is applied to a flexible body simulation in mechanical dynamics, it could be also utilized in a wide range of other fields. BFS-based nested dissection and its numerical factorization enables adaptive control of setting operational range as well as positive parallelization compared with traditional DFS-based nested dissection. It brings better parallel efficiency when various sized separators are divided into blocks under a certain size. This study presents an experiment to identify an optimal maximum block size. Sparse matrices from mechanical dynamics software are numerically factorized, and the time results show that CACHE memory mode is appropriate for a better performance than FLAT mode. And it is recommended to split the operational region in accordance with MCDRAM size in this experiment. Our research shows fairly similar performance to DSS included in MKL and speeds up the time approximately 8 - 14 times in comparison with CHOLMOD, a part of SuiteSparse.

Preparing NERSC users for Cori, a Cray XC40 system with Intel many integrated cores

SummaryThe newest NERSC supercomputer Cori is a Cray XC40 system consisting of 2,388 Intel Xeon Haswell nodes and 9,688 Intel Xeon‐Phi “Knights Landing” (KNL) nodes. Compared to the Xeon‐based clusters NERSC users are familiar with, optimal performance on Cori requires consideration of KNL mode settings; process, thread, and memory affinity; fine‐grain parallelization; vectorization; and use of the high‐bandwidth MCDRAM memory. This paper describes our efforts preparing NERSC users for KNL through the NERSC Exascale Science Application Program, Web documentation, and user training. We discuss how we configured the Cori system for usability and productivity, addressing programming concerns, batch system configurations, and default KNL cluster and memory modes. System usage data, job completion analysis, programming and running jobs issues, and a few successful user stories on KNL are presented.

Memory and Energy Storage Dual Operation in Chalcogenide-Based CBRAM

In this paper, we demonstrated memory and energy storage dual operation in GeS2/Ag conducting bridge RAM. Both operations are based on electrochemical reactions and Ag diffusion in the GeS2 electrolyte. Depending on specific bias and current conditions, the same device can be used for data or energy storage: in memory mode, Ag-based filament is formed in GeS2, while in energy storage mode, Ag bulk diffusion is achieved. Voltage sweep and constant current stress cycling modes for energy storage are evaluated, and the total stored charge is quantified. These obtained results open the path for new autonomous or ultra-low power circuits, integrating dual operation devices composed of the same stack, where energy storage devices could provide energy to the memory array.

Fully Solution‐Processed Transparent Nonvolatile and Volatile Multifunctional Memory Devices from Conductive Polymer and Graphene Oxide

A transparent multifunctional memory array with the configuration of m‐poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS)/graphene oxide (GO)/m‐PEDOT:PSS is fabricated through a full‐solution process. Dimethyl sulfoxide‐doped PEDOT:PSS thin films as the top and bottom electrodes are facilely prepared by spray coating, and a GO film as the active medium layer is obtained by spin coating. The thus‐fabricated device exhibits nonvolatile and volatile multifunctional memory effects, with an ON/OFF current ratio of 104 and 102 for the nonvolatile and volatile modes, respectively. Both the ON and OFF states are stable under the retention test in the nonvolatile memory mode, as well as during the endurance test in the volatile memory mode, demonstrating advantageous features of stable operation, permanent lifetime, excellent reproducibility, and reliable switching endurance. Moreover, the devices also show a 70% transmission of visible light. Their high transparency, combined with the multifunctional property and simple device configuration, makes these devices promising carbon‐based building blocks in a variety of electronic systems such as transparent electronics, electronic labels, radio frequency identification, internal memory, and databases. Most importantly, the simple full‐solution fabrication process is anticipated to potentially afford industrial‐scale low‐cost fabrication of future electronic devices.

Breaking Memory Modes: Anne Enright's and Tana French's Silent Interruptions

Anne Enright's trauma novel, The Gathering (2007), and Tana French's crime novel, The Secret Place (2014), can be seen to operate purposefully within the familiar codes of their respective genres to a degree that draws attention to the processes of emotional and cognitive recognition that give such codified works their emotional power: repetitive, affective, recognisable framing patterns. Both authors, however, also deploy what I call, following Marianne Hirsch, an aesthetics of interruption: this is an affective, political resistance to the gratifying dispensations that characterise most memory modes and that feature in closure-driven detective fictions in particular. Both novelists exceed genre parameters to make us think about genre frames and what exceeds both the frame and its contained, comprehensible narrative. The aesthetic interruptions in both texts force us to think about the silences that obtain around community collusion in criminal actions and unrelenting structural oppression, and that produce, facilitate and sustain asymmetrical relations of power.

Granular shape memory ceramic packings

Although bulk shape memory ceramics (SMCs) are brittle, in particulate form they exhibit large recoverable strains in both shape memory and superelastic modes. Here, we investigate the fundamentals of mechanically- and thermally-triggered martensitic transformation of granular SMC packings. Specifically, (ZrO2)1-x-(CeO2)x is studied in three different composition regimes. In the shape memory regime (below the martensite finish temperature), confined uniaxial compression leads to martensite re-orientation in the granular SMC packing, with the peak intensity of preferred crystallographic orientation increasing with external loading. In the intermediate regime (between austenite start and martensite start temperatures), confined uniaxial compression leads to irreversible martensitic transformation with the transformed volume increasing with external loading. This provides direct evidence of stress-induced martensitic transformation in granular SMCs. In the superelastic regime (above the austenite finish temperature), confined uniaxial compression leads to forward (during loading) and reverse (during unloading) martensitic transformation, manifesting in a large hysteresis loop in each load-unload cycle with remarkably high energy dissipation density. Based on finite element modeling of SMC particles in contact, we explore the martensitic transformation under non-uniform Hertzian stresses, which in turn provides insight on the experimental results.

Eddy Memory Mode of Multidecadal Variability in Residual-Mean Ocean Circulations with Application to the Beaufort Gyre

AbstractMesoscale eddies shape the Beaufort Gyre response to Ekman pumping, but their transient dynamics are poorly understood. Climate models commonly use the Gent–McWilliams (GM) parameterization, taking the eddy streamfunction to be proportional to an isopycnal slope s and an eddy diffusivity K. This local-in-time parameterization leads to exponential equilibration of currents. Here, an idealized, eddy-resolving Beaufort Gyre model is used to demonstrate that carries a finite memory of past ocean states, violating a key GM assumption. As a consequence, an equilibrating gyre follows a spiral sink trajectory implying the existence of a damped mode of variability—the eddy memory (EM) mode. The EM mode manifests during the spinup as a 15% overshoot in isopycnal slope (2000 km3 freshwater content overshoot) and cannot be explained by the GM parameterization. An improved parameterization is developed, such that is proportional to an effective isopycnal slope , carrying a finite memory γ of past slopes. Introducing eddy memory explains the model results and brings to light an oscillation with a period ≈ 50 yr, where the eddy diffusion time scale TE ~ 10 yr and γ ≈ 6 yr are diagnosed from the eddy-resolving model. The EM mode increases the Ekman-driven gyre variance by γ/TE ≈ 50% ± 15%, a fraction that stays relatively constant despite both time scales decreasing with increased mean forcing. This study suggests that the EM mode is a general property of rotating turbulent flows and highlights the need for better observational constraints on transient eddy field characteristics.

Study on the development and usage of a cardiopulmonary resuscitation time point recorder.

To invent a novel cardiopulmonary resuscitation (CPR) time point recorder to synchronously and automatically record the time and to identify its effectiveness in humans. A CPR time point recorder was invented after the doctors were familiar with the traditional Utstein recovery registration mode and mastered the registration time points required. The progress of CPR was simulated. The standard and correct times were recorded, and the doctors performing the recovery collected the data about the times using our CPR time point recorder or the memory registration mode. The deviation times were 21.4±24.7 seconds for the memory group and 3.57±4.58 seconds for CPR time point recorder group. The deviation of times increased significantly depending on the increase of the operation items in the memory group. A similar phenomenon was found in the timer group but with a smaller difference (P<0.01). A CPR time point recorder could reduce the deviation of operate-time, especially after a long-time operation, and for procedures with more operating items, compared with the memory mode. It was a more advantageous and accurate method for the Utstein registration.

Threshold resistance switching in silicon-rich SiOx thin films**Project supported by the Open Project Program of Surface Physics Laboratory (National Key Laboratory) of Fudan University, China (Grant No. KF2015_02), the Open Project Program of National Laboratory for Infrared Physics, Chinese Academy of Sciences (Grant No. M201503), Zhejiang Provincial Science and Technology Key Innovation Team, China (Grant No. 2011R50012), and Zhejiang Provincial

Si-rich SiOx and amorphous Si clusters embedded in SiOx films were prepared by the radio-frequency magnetron cosputtering method and high-temperature annealing treatment. The threshold resistance switching behavior was achieved from the memory mode by continuous bias sweeping in all films, which was caused by the formation of clusters due to the local overheating under a large electric field. Besides, the I–V characteristics of the threshold switching showed a dependence on the annealing temperature and the SiOx thickness. In particular, formation and rupture of conduction paths is considered to be the switching mechanism for the 39 nm-SiOx film, while for the 78 nm-SiOx film, adjusting of the Schottky barrier height between insulator and semiconductor is more reasonable. This study demonstrates the importance of investigation of both switching modes in resistance random access memory.

Vertically Integrated Nanowire-Based Unified Memory.

A vertically integrated nanowire-based device for multifunctional unified memory that combine dynamic random access memory (DRAM) and flash memory in a single transistor is demonstrated for the first time. The device utilizes a gate-all-around (GAA) structure that completely surrounds the nanowire; the structure is built on a bulk silicon wafer. A vertically integrated unified memory (VIUM) device composed of five-story channels was fabricated via the one-route all-dry etching process (ORADEP) with reliable reproducibility, stiction-free stability, and high uniformity. In each DRAM and flash memory operation, the five-story VIUM showed a remarkably enhanced sensing current drivability compared with one-story unified memory (UM) characteristics. In addition to each independent memory mode, the switching endurance of the VIUM was evaluated in the unified mode, which alternatively activates two memory modes, resulting in an even higher sensing memory window than that of the UM. In addition to our previous work on a logic transistor joining high performance with good scalability, this work describes a novel memory hierarchy design with high functionality for system-on-chip (SoC) architectures, demonstrating the practicality and versatility of the vertically integrated nanowire configuration for use in various applications.

Formation-Evaluation Log-Off Results for Coalbed-Methane-Field Development

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 176823, “Formation-Evaluation Log-Off Results Comparing New- Generation Mining-Style Logging Tools With Conventional Oil-and-Gas Logging Tools for Application in Coalbed-Methane-Field Development,” by T. Gan, B. Balmain, A. Sibgatullin, M. Ward, and F. Liu, Arrow Energy, and E. Murphy and L. Cook, Shell, prepared for the 2015 SPE Asia Pacific Unconventional Resources Conference and Exhibition, Brisbane, Australia, 9–11 November. The paper has not been peer reviewed. An operator’s coalbed-methane (CBM) -development projects in Queensland, Australia, are designed with a large volume of wells that will need to be drilled and evaluated over the next decade. At present, the cost of logging is forcing the operator to choose between early data coverage vs. restricted logging. To resolve this issue, the operator has embarked on a series of technology trials to investigate various cost-effective formation-evaluation solutions. This paper presents the results of a comparison of state-of-the-art mining logging technology and conventional oil-and- gas logging technology. Introduction The Surat basin is a broad intracratonic downward that covers an area of approximately 300 000 km2 in southeastern Queensland and northeastern New South Wales. The operator’s interests are solely in Queensland. The basin comprises a primarily nonmarine Jurassic succession overlain by a mixed nonmarine and marine Early Cretaceous succession. (For detailed geological information, please see the complete paper.) The operator’s proposed Surat CBM project is located in the eastern part of the basin, in Queensland only, with an area of 22 000 km2. It is important to use geophysical logs as part of the data-acquisition program, especially during the early development phase. The geophysical logs are used for coal identification, derivation of coal properties, and coal ranking. Current mining logging technology consists of a basic logging suite such as gamma ray, density/photoelectric factor, and neutron and resistivity tools. For advanced logging operations in exploration and appraisal wells, these must be replaced by conventional oil-and-gas logging tools to ensure holistic subsurface characterizations and front-end engineering work for future project- development decision making. Logging-Technology-Trial Results for CBM Data Acquisition Trials proved the availability of a cost-saving proposal for logging vertical development wells, which can meet formation-evaluation objectives while minimizing the costs of openhole logging. This is primarily achieved by running a basic logging suite of density, gamma, caliper, and deviation. An important distinction to consider is that, in conventional oil and gas, density sensitivity is usually down to approximately 2.0 g/c m3 because of the use of weighted muds. In CBM, formation water or very lightweight muds are used and coal densities can be as low as 1.2 g/cm3, pushing the boundaries of density-tool measurements to obtain such low readings. Mining-Drillpipe-Push (MDP) Logging Tools. This logging-conveyance method involves the addition of a composite collar within the drilling bottomhole assembly before the production section is drilled. Once total depth (TD) is reached, the drillpipe is broken open at surface and the logging tools are pumped down and latched into the composite collar. The pipe is then tripped out of the well, and the logging occurs through the composite collar in memory mode. The logging tools for this trial included density, gamma, dual-neutron, and resistivity.

James Joyce’s Ironical Memory: Jungian versus Parallactic Literary (Re-)Cognition in the Cultural-Gift Novel Titled Ulysses

Approaching James Joyce’s Ulysses from the point of view of the cognitive field of cultural memory studies involves an account about the difficulties encountered on the way, followed by the discovery of limitations that the ironies of the Joycean fictional experiment introduce in the standard handling of four cultural memory modes (experiential, mythicizing, antagonistic and reflexive, according to Astrid Erll’s 2008 study Literature, Film and the Mediality of Cultural Memory ). The complexities of the modernist cultural intra-mediation memory modes are explained by reference to self-reflexive postcreation, fabrication, parallelism and parallax; the latter complicates parallelism, just as postcreation, a self-reflexive term coined by Stephen Dedalus in the Ulyssean episode “Oxen of the Sun” complicates fabrication; with help from The Parallactic View by Slavoj Žižek, the species of Joycean irony are explained so as to refute Carl Gustav Jung’s dismissal of Ulysses as meaningless in 1932.

Finely tuned digital memory modes and performances in diblock copolymer devices by well-defined lamellar structure formation and orientation control

Block copolymers bearing carbazole moieties in thin films nicely demonstrated vertical or horizontal lamellar structure depending on the process condition. The vertical lamellar structure revealed permanent memory behavior, where the horizontal lamellar structure exhibited volatile memory behavior.

High-performance triazole-containing brush polymers via azide–alkyne click chemistry: a new functional polymer platform for electrical memory devices

Two series of well-defined brush polymers bearing a triazole moiety on each bristle were prepared from the click chemistry reactions of a poly(glycidyl azide) (PG) and a poly(4-azidomethylstyrene) (PS) with alkyne derivatives. The thin-film morphologies and properties, especially electrical memory performances, of these triazole-containing brush polymers were investigated in detail. The brush polymers with a triazole ring substituted with an alkyl or alkylenylphenyl group in the bristle exhibited only dielectric characteristics. By contrast, the other brush polymers bearing a triazole ring substituted with phenyl or its derivatives with a longer π-conjugation length in the bristle demonstrated excellent unipolar permanent memory behaviors with low power consumption, high ON/OFF current ratios and high stability and reliability under ambient air conditions. Furthermore, their memory type could be tuned to p- or n-type by the incorporation of an electron-donating or -accepting group into the phenyl unit linked to the triazole moiety. Overall, this study presents the first demonstration of the azide–alkyne click chemistry synthesis of triazole moieties with substituent(s) that exhibit a resonance effect; this approach is a very powerful synthetic route to develop electrical memory polymers suitable for the low-cost mass production of high-performance, polarity-free programmable memory devices. A programmable memory cell based on nanoscale polymer thin films is easier to produce and consumes less power than typical devices. Electrical memory polymers contain networks of conjugated molecules that can switch to high- or low-resistance off and on states using moderate voltages. To improve the processing and performance of these materials, Moonhor Ree from POSTECH in South Korea and co-workers turned to ‘click’ chemistry — an approach that connects small molecules together quickly and with minimal by-products. The team used conventional casting methods with organic solvents to tether polymer 'bristles' decorated with nitrogen-containing triazole rings to electrode surfaces. Experiments showed that a unique resonance effect between the triazole rings gave high on/off current ratios and low switching-on voltages, while the click synthesis produced a smooth, nanoscale interface with desirable stability under ambient conditions. This study demonstrated that the formation of triazole moieties accompanying with a linker or substituent group(s) having a resonance effect (which can provide a charge stabilization power) by using azide–alkyne click chemistry is a very powerful synthetic route to develop electrical memory polymers with high performances. The memory mode can be further tuned by changing the linker or substituent group(s) in the triazole moiety.

Superconducting/magnetic Three-state Nanodevice for Memory and Reading Applications.

We present a simple nanodevice that can operate in two modes: i) non-volatile three-state memory and ii) reading device. The nanodevice can retain three well defined states −1, 0 and +1 and can operate in a second mode as a sensor for external magnetic fields. The nanodevice is fabricated with an array of ordered triangular-shaped nanomagnets embedded in a superconducting thin film gown on Si substrates. The device runs based on the combination of superconducting vortex ratchet effect (superconducting film) with the out of plane magnetization (nanomagnets). The input signals are ac currents and the output signal are dc voltages. The memory mode is realized without applying a magnetic field and the nanomagnet stray magnetic fields govern the effect. In the sensor mode an external magnetic field is applied. The main characteristic of this mode is that the output signal is null for a precise value of the external magnetic field that only depends on the fabrication characteristics of the nanodevice.