Traditionally, FPGA designers make use of CAD tools for evaluating architectures in terms of the area, delay and power. Recently, analytical methods have been proposed to optimize the architectures faster and easier. A complete analytical power, area and delay model have received little attention to date. In addition, previous works use analytical methods to optimize general-purpose FPGA architectures. Using analytical models for optimizing application-specific FPGA architectures are interesting subjects in the reconfigurable computing field. In this way, designers can investigate the optimized architecture for a set of application circuits and the consumers can find their best architecture among a variety of devices which is optimal for their specific work. In this paper, we complete an analytical FPGA performance model by presenting an analytical model to estimate the dynamic and leakage power and by integrating it into the Geometric Programming framework. This way, we are able to rapidly analyze various FPGA architectures and select the best one in terms of power consumption as well as area and delay. In the next step, we extend the model for optimizing FPGA architectures for a set of applications. A case of the best architecture for two specific circuits has been investigated in this paper.
Yapılan bu çalışmanın amacı iş kazaları ve meslek hastalıklarının oluşumuna etki eden genel geçer faktörleri İran'da faaliyet gösteren iki maden işletmesine göre test etmek ve sadece bir işletmede kullanılan ISO ve OHSAS uygulamalarının iş kazaları ve meslek hastalıklarının oluşumuna etki eden faktörleri engellemede ne kadar etkili olduğunu ISO ve OHSAS kullanmayan işletmeye kıyasla ortaya koymaktır. 2019 yılına ait çalışmada iki işletme çalışanlarına uygulanan 310 değerlendirme ölçeğinden elde edilen veriler ayrı ayrı değerlendirilmiş ve son olarak ISO ve OHSAS uygulamalarına yönelik genel bir değerlendirme yapılmıştır. Çalışmada sonuç olarak ISO ve OHSAS kullanan ve kullanmayan işletme çalışanlarının cinsiyet, eğitim düzeyi ve çalışma sürelerine göre iş kazaları ve meslek hastalıklarının oluşumuna etki eden bazı faktör değerlendirmeleri arasında anlamlı farklılıklar elde edilmiştir. İşletme çalışanlarının iş yerlerinde ISO ve OHSAS uygulamasının var olup olmadığından haberdar olmalarına göre oluşturulan yapılan genel değerlendirmelerde ise iş yerlerinde ISO ile OHSAS uygulamalarının uygulandığının farkında olan çalışanların bu iki uygulamanın iş kazaları ve meslek hastalıklarının oluşumuna etki eden faktörleri engellemede etkili olduklarını belirtmişlerdir.
FPGA architectural optimization has emerged as one of the most important digital design challenges. In recent years, experimental methods have been replaced by analytical ones to find the optimized architecture. Time is the main reason for this replacement. Conventional Geometric Programming (GP) is a routine framework to solve analytical models, including area, delay, and power models. In this article, we discuss the application of the Genetic Algorithm (GA) to the design of FPGA architectures. The performance model has been integrated into the Genetic Algorithm framework in order to investigate the impact of various architectural parameters on the performance efficiency of FPGAs. This way, we are able to rapidly analyze FPGA architectures and select the best one. The main advantages of using GA versus GP are concurrency and speed. The results show that concurrent optimization of high-level architecture parameters, including lookup table size ( K ) and cluster size ( N ), and low-level parameters, like scaling of transistors, is possible for GA, whereas GP does not capture K and N under its concurrency and it needs to exhaustively search all possible combinations of K and N . The results also show that more than two orders of magnitude in runtime improvement in comparison with GP-based analysis is achieved.
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