کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
865318 | 909660 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimizing a Parallel Video Encoder with Message Passing and a Shared Memory Architecture
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Optimizing a Parallel Video Encoder with Message Passing and a Shared Memory Architecture Optimizing a Parallel Video Encoder with Message Passing and a Shared Memory Architecture](/preview/png/865318.png)
چکیده انگلیسی
Implementing video applications on emerging multi-core processors is a promising technique for personal, real-time multi-media applications. However, when porting the legacy parallel video encoders developed for clusters to shared-memory multi-cores, the existing parallel algorithms result in workload imbalances on different cores and communication inefficiencies. This paper describes a strip-wise parallel scheme to balance workloads and a hybrid communication mechanism to reduce communication overhead. The implementation of the H.264 parallel encoder on an eight CPU Intel Xeon system achieves 5x to 6x speed-up over a single thread encoder and achieves a 29% performance improvement over the commonly used master-slave schemes on clusters. The paper also gives further analysis on scalability, parallel efficiency, workload balance, and communication overhead as the number of cores varies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tsinghua Science & Technology - Volume 16, Issue 4, August 2011, Pages 393-398
Journal: Tsinghua Science & Technology - Volume 16, Issue 4, August 2011, Pages 393-398
نویسندگان
Junli (è°·ä¿ä¸½), Yihe (åä¹å),