زمان‌بندی آگاه از انرژی مصرفی برای سیستم‌های بی‌درنگ تک‌پردازنده‌ای بحرانی- مختلط
الموضوعات :سیدحسن صادق‌زاده 1 , یاسر صداقت 2
1 - دانشگاه فردوسی مشهد
2 - دانشگاه فردوسی مشهد
الکلمات المفتاحية: تغيير پوياي ولتاژ و فرکانسزمان‌بندی آگاه از انرژی مصرفیسیستم‌های بحرانی- مختلطسيستم‌هاي بي‌درنگمصرف توان,
ملخص المقالة :
معماری پیمانه‌ای یکپارچه تحولی قابل توجه در صنعت هوافضا به وجود آورده است. در این معماری به دلیل کاهش اندازه، وزن، توان مصرفی و هزینه، وظایف با درجه بحرانیت متفاوت بر روی یک سخت‌افزار تجمیع شده و از منابع به صورت مشترك استفاده می‌کنند. علاقه صنعت به این یکپارچه‌سازی، منجر به معرفی سیستم‌های بحرانی- مختلط شده است. یکی از نیازهای اساسی این سیستمها، بی‌درنگی و اطمینان از اجراي به موقع وظایف بحرانی می‌باشد که البته تجمیع وظایف بحرانی و غیر بحرانی، زمان‌بندی اجراي وظايف را با مشکلاتی مواجه مي‌كند. همچنین به دلیل استفاده از باتری در این وسایل، کاهش انرژی مصرفی از دیگر نیازهای مهم می‌باشد. بنابراین در این مقاله به منظور دستیابی به نیازهای مطرح‌شده (زمان‌بندی بی‌درنگ و کاهش انرژی مصرفی)، یک روش زمان‌بندی ابتکاری آگاه به انرژی مصرفی در این سیستمها معرفی می‌شود. این الگوریتم ضمن تضمین اجرای به موقع وظایف بحرانی، انرژی مصرفی سیستم را با تغییر پویای ولتاژ و فرکانس (DVFS) کاهش خواهد داد. نتایج به دست آمده از شبیه‌سازی‌ها نشان مي‌دهد انرژي مصرفي الگوریتم پیشنهادی در مقايسه با روش‌هاي مشابه تا 14% بهبود مي‌يابد.
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