انجمن برنامه نویسی جولیا | United States America (US)

Create: 2021-07-08 Update: 2025-07-07 16:36:25

برنامه نویسی GPU
همه ما در کامپیوتر های شخصی خود یک پردازنده گرافیکی (GPU) داریم که از وجود آن غافل هستیم. صد البته که بازی ها و ویدیو هایی که می بینیم توسط این بخش رندر می شوند اما آیا می توان از توان محاسباتی GPU برای محاسبات خودمان استفاده کنیم؟ پاسخ مثبت است. اما چه مزایایی در این محاسبات هست. واحد پردازنده گرافیکی به صورت ذاتی برای انجام محاسبات ماتریسی با حجم بسیار بالا طراحی شده است. دلیل این مورد استفاده بسیار از جبر خطی در محاسبات گرافیکی است. GPU بر خلاف CPU ساختار متفاوتی دارد و معمولا چند صد هسته دارد. علاوه بر آن یک حافظه اختصاصی پر سرعت هم در کنار آن وجود دارد. نحوه محاسبه در GPU به صورت زیر است:
1- ابتدا داده هایتان از حافظه اصلی (RAM) به حافظه GPU کپی می شود. این مرحله از همه زمانبر تر است و برای محاسبات کم حجم باعث می شود که سرعت آن در مقایسه با CPU کاهش پیدا کند.
2- پردازندهCPU به واحد GPU دستور یک محاسبه خاص را می دهد.
3- عملیات به صورت موازی در چندین هسته GPU انجام شده و نتیجه در حافظه GPU باقی می ماند.
4- مقدار نتیجه به حافظه اصلی کپی می شود.

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برنامه نویسی GPU

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