5,358 research outputs found
Elastic-DF: Scaling Performance of DNN Inference in FPGA Clouds through Automatic Partitioning
No full textCustomized compute acceleration in the datacenter is key to the wider roll-out of applications based on deep neural network (DNN) inference. In this article, we investigate how to maximize the performance and scalability of field-programmable gate array (FPGA)-based pipeline dataflow DNN inference accelerators (DFAs) automatically on computing infrastructures consisting of multi-die, network-connected FPGAs. We present Elastic-DF, a novel resource partitioning tool and associated FPGA runtime infrastructure that integrates with the DNN compiler FINN. Elastic-DF allocates FPGA resources to DNN layers and layers to individual FPGA dies to maximize the total performance of the multi-FPGA system. In the resulting Elastic-DF mapping, the accelerator may be instantiated multiple times, and each instance may be segmented across multiple FPGAs transparently, whereby the segments communicate peer-to-peer through 100 Gbps Ethernet FPGA infrastructure, without host involvement. When applied to ResNet-50, Elastic-DF provides a 44% latency decrease on Alveo U280. For MobileNetV1 on Alveo U200 and U280, Elastic-DF enables a 78% throughput increase, eliminating the performance difference between these cards and the larger Alveo U250. Elastic-DF also increases operating frequency in all our experiments, on average by over 20%. Elastic-DF therefore increases performance portability between different sizes of FPGA and increases the critical throughput per cost metric of datacenter inference. Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Computer Engineerin
Hands on Learning with CS/DF Standards
No full textOur project aimed to introduce current teachers, our peers (pre-service teachers), and middle school students to the use of hands-on learning to introduce the NY State Computer Science and Digital Fluency (CS/DF) standards. We worked together to learn the fundamentals of coding and the intricacies of the CS/DF standards to create a workshop in which we coached pre-service teachers and teachers on how to incorporate the CS/DF standards into the classroom using LEGO Education. We presented at a Molloy workshop for pre-service teachers in November 2023, the Make Math Count \u27\u27 Conference for current teachers in January 2024, and at the CSTEP Day of Service in early April 2024. Our goal was to inform educators about the CS/DF Standards and provide the opportunity for them and middle schoolers to build and code with LEGOs. Survey results show a growth in understanding of the CS/DF standards and an increased confidence in implementation
Hydrodynamical turbulence by fractal fourier decimation
No full textWe present a systematic numerical investigation of high-resolution 3D isotropic and homogeneous turbulence resolved on a decimated set of Fourier modes. Fractal decimation acts to decrease the effective dimensionality of the flow by allowing triadic interactions only in a set of Fourier modes N(k) proportional to k^DF for large k. While keeping the symmetries of the original 3D Navier-Stokes equations unchanged, a dramatic change in small-scale statistics is detected at decreasing the fractal dimension DF . Already at fractal dimension DF = 2.8, a global self-similar behaviour is observed in the inertial range of scales, the consequence of such transition are the restoration of the scaling symmetry and vorticity distribution that becomes close to Gaussian. We relate the results to the different roles of local vs non-local interactions in the energy transfer range
Grid Resources for Industrial Applications
No full textWe introduce Grid Resources for Industrial Applications (GRIA), a project that aims to enable commercial use of the Grid. GRIA enables service providers to rent out spare CPU cycles, and clients to hire those CPU cycles. Web services play a key role in the architecture of GRIA, chiefly through their interoperability and security features - they provide a well-defined means of limiting clients’ access to discrete operations, thus allowing clients to do “work” on a remote application server without giving them full shell access to the server. In this paper, we focus on requirements, business processes and security, and interoperability and standardisation issues raised by this work. We also describe some of the lessons learned through experience of designing, implementing and deploying a prototype system, GRIA v1
Predicting education building occupants’ thermal sensation through CatBoost-DF algorithm
No full textA novel machine learning method, named CatBoost-DF (CatBoost deep forest), is proposed to solve this existing problem of low accuracy and lack of practicality in thermal sensation prediction. In the CatBoost-DF, a cascading strategy is introduced to strengthen the association between each layer of CatBoost. To verify the accuracy and robustness of CatBoost-DF, experiments collected physiological and environmental data from hundreds of subjects with the help of sensor devices and questionnaires. Compared with existing state-of-the-art machine learning methods, CatBoost-DF shows significant superiority, with a prediction accuracy of 90%, which is 4%-39% higher than other models. Moreover, the study explored the effects of seasonal and gender factors on thermal sensation. Result shown that different seasons have different thermal sensation for males and females. Finally, CatBoost-DF is applied to predict occupants’ thermal sensation, and the “comfort range” of the important parameters HR, WS, and CTR that affect the thermal sensation is calculated experimentally
'Response by the author, Daniel F. Vukovich.'
No full textResponse by the author (Vukovich) to a review of Illiberal China (my 2019 monograph
DF AND HF LASER SPECTRA
No full textW. B. Roh and K. Narahari Rao, J. Mol. Spectrosc. 49, 317 (1974).""Author Institution: Department of Physics, The Ohio State University; Department of Electrical Engineering, The Ohio State UniversityA pulsed laser was used as a source to study DF and HF infrared laser spectra with a grating spectrometer. The rotational structure observed for the 1-0, 2-1, and 3-2 bands of DF, and the 1-0 and 2-1 bands of HF has been measured by following a procedure similar to that used for the CO laser Molecular constants derived by combining these laser measurements with other available data will be presented
OPTOACOUSTIC MEASUREMENT OF DF LASER ABSORPTION BY METHANE
No full textAuthor Institution:An optoacoustic system has been constructed for measurement of absorption of DF laser radiation. Absorption by methane in Argon and Nitrogen has been measured at 15 DF laser lines in the 3.6 – 4.0 region. Construction and calibration of the spectrophone will be discussed
Taylor Modelinin Türkiye'ye Uygulanması
No full textÖnemi ekonomiler üzerinde her geçen dönem artan Merkez Bankaları ve uyguladıkları para politikaları akademik çalışmaların vazgeçilmez konularından olmuştur. Para politikası araçlarının daha etkin kullanılması ve ekonomik istikrarı sağlaması için akademik çalışmalar daha da önem taşımaktadır. Son dönemlerde akademik çalışmalarda kurala dayalı ve takdire dayalı para politikası üzerine durulmaktadır. Kurala dayalı para politikası kurallarından biri olan ve John Taylor tarafından 1993 yılında ortaya konan Taylor kuralı bu çalışmada üzerinde durulan modeldir. Amerikan Merkez Bankasının verdiği kararları en iyi şekilde gösteren ekonometrik model olan Taylor modeli, faiz oranları ile çıktı açığı ve enflasyon açığı arasında bir ilişki kurmaktadır. Bu model çalışmamızda Türkiye veriler üzerinde test edilmiştir. İlk olarak gecelik basit faiz oranı verisi üzerinde ADF ve DF birim kök testleri uygulanmıştır. Daha sonra koentegrasyon olup olmadığına bakılmış ve en son olarak da VECM modeli kullanılarak sonuçlara erişilmiştir. Sonuç itibariyle çıktı açığı ve döviz kurundaki değişimin gecelik faiz oranındaki değişimi açıklayabildiği, enflasyon açığının ise çok az bir açıklama gücü olduğu görülmüştür.Central Bank?s significance on the world economies are increasing day by day and the monetary policies applied by central banks has been discussed in academic papers. For using policy tools more efficient and creating stability on economic conditions, academic researchers have been gaining more significance at the present. Especially rule-based monetary policy and discretionary monetary policy are the two subjects that academic researchers are being studied. In this paper we are studying a rule-based monetary policy rule, Taylor rule which was generated by John Taylor in 1993. The model best describes FED?s interest rate decisions. Taylor rule includes output gap and inflationary gap for deciding interest rates. We have tested Taylor model for Turkish data in this paper. Firstly, we apply ADF and DF unit root test on overnight interest rates series. After that we applied a cointegration test and try to see whether there is cointegration between the variables of the model. At last we applied a VECM on the data and interpret the results. According to the results, output gap and change in the nominal exchange rate can both explain the change in interest rates. On the other hand, inflationary gap explains changes in the interest rate much less than other two variables
Drs. Taylor Brooks, Jean Brooks, and Manson Meads
No full textDr. J. Taylor Brooks (L-R) and his wife, Dr. Jean Bailey Brooks, look over paperwork with Dr. Manson Meads, all from North Carolina Baptist Hospital. Dr. J. Taylor Brooks was a former NCBH house officer. He and his wife shared a doctor’s office in Greensboro. Dr. Jean Bailey Brooks was the only female in her Bowman Gray School of Medicine Class of 1944. She was the first female president of the Medical Alumni Association. The Brooks established the Brooks Scholar in Academic Medicine Program to benefit junior faculty members in research and training. They also pledged over $1 million for the building campaign in 1986. Dr. Manson Meads’ tenure spanned from 1947 until his retirement in 1983.Info from Baptist Hospital Topics, 1986; Around the Medical Center, Spring 196
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