كلمة المُراجع (التقريظ)

Compatibility of Education and Training in the Light of the Seerah of the Holy Prophet

Humankind has been granted a special status due to its being vicegerent of Allah on earth for he has been entrusted with the responsibility to keep order in the world according to the directives of its Creator. Humans are guided by Prophets in history. Some of these Prophets have got greater value, sphere and depth of influence on humanity due to different factors. Muhammad (Peace Be Upon Him) is the last Prophet of Allah, for the eternity and whole humanity. After him, Islam is completed for all times to come. Islam is a complete code of life; education and training constituting its crux. Prophet Muhammad (Peace Be Upon Him) was greatly concerned and cognizant of education and training of his followers which is evident from multifarious events of his life.  Major emphasis was laid on training coupled with education and both are, thus, inevitably interlocked with each other. It is clear that education was considered an assimilation of knowledge and training was taken as its reflection in daily life. The verses of the Holy Quran and sayings of the Holy Prophet (Peace Be Upon Him) bear a perfect testimony to this aspect of foremost significance. The earlier people in the fold of Islam were much concerned about training and nurturing, hence they avoided mere memorization of facts. The present paper is an attempt to discover the compatibility between education and training in the light of the paradigm of secret of the Prophet (Peace Be Upon Him) of Islam.

H Ardware S Oftware D Istributed Rtos a Rchitecture F or M Ultiprocessor B Ased R Eal T Ime H Igh D Ensity M Edia a Pplications

Designing RTOS for multiprocessor based system and partitioning the design into hardware and software is the paradigm for the high-end systems evolving to support computation-intensive applications. In this thesis, RTOS is presented that is amalgam of distributed software scheduler and dynamically scalable hardware switch capable of performing all kernel tasks in real time and at wire speed and consequently, minimizing software related scheduling overheads and optimizing resource utilization. Key components of the research output are software framework for mapping high density media applications on multiprocessor based system, its corresponding multilevel scheduler design and design of programmable hardware switch to optimize resource utilization and enhance system performance. In the developed multiprocessor based system, heterogeneous multiprocessors are arranged as Arrays of inter-connected pipelines giving rise to a modified pool-of-pipelines architecture or two dimensional tightly coupled matrix architecture, having scalable, distributed processing and memory capabilities through a plurality of processing elements. The hardware software distributed architecture improves the application optimization, mapped on this multiprocessor based system, by enhancing execution time and minimizing processor idle time, while reducing design complexity and interface problems. RTOS architecture exploits parallelism both in the system application environment and in the distributed computing occurring in the hardware. Based on the type of service, the processes are divided into sub tasks and distributed onto multiple Processors, which are programmed to operate on a set of data, in a certain sequence and in a particular time slot. - 7 -The sequence is maintained by the instruction format of hardware RTOS and the time slot is predicted by the configurations set by the user. Application pipelining framework is presented in the software part of RTOS to exploit parallelism in media application, based on the concept of components or task model, similar to instruction pipelining in the Processor. To meet the constraints and characteristics of the defined framework, two level scheduling policy is adapted. Fixed- Priority Preemptive scheduling algorithm is used at the First-level. For Second-level various scheduling algorithms have been evaluated and analyzed offline and implemented in the software. Heuristic based algorithm is recommended as Second-level algorithm for media application to maintain QoS. The hardware RTOS, called Switch, is implemented as a programmable processor with dedicated program cache. It performs all RTOS kernel tasks in real time and facilitates inter-processor exchange of data, communication or synchronization, deadlock avoidance and exchange of data with external shared memory, thus, enhancing performance and minimizing Processors idle time. The RTOS supports hardware scalability to cater for high to very high density applications and incorporates scalable scheduling and resource management