Design and implementation of a new special storage server

To improve I/O speed and system performance of network storage devices, a special storage server that is an iSCSI-based network-attached storage server (iSCSI-based network-attached storage server, for short iNAS) is designed. The iNAS can provide both the file I/O and the block I/O services by an iSCSI module, and it converges with the NAS and the SAN (storage area network). The iNAS improves the I/O speed by the direct data access (zero copy) between the RAID (redundant array of inexpensive disks) controller and the user-level memory. The iNAS integrates the multi-RAID for a single storage pool by a multi-stage stripping device driver, and it implements the storage virtualization. In the experiments, the iNAS has ultra-high-throughput for both the file I/O requests and the block I/O requests.

显卡BIOS升级技巧

显示卡BIOS的作用经常听到BIOS,但大多数人不太清楚它的意思。其实BIOS是Basic Input Out-put system的简称,也就是“基本输入输出系统”。一听就知道它的重要性了,没有它显示卡马上罢工。BIOS是一个软件,但它固化在显示卡所带的一个专用存储器里。

智能规划分布式程序结构的设计

研究了智能规划系统的程序设计问题。提出利用认识系统过程模型PCMS（processmodelcogni－tivesystem）来设计这些程序。PCMS模型是由Westminster大学研制的，用决策理论述语来说明，用来对分布式软件系统的典型模块进行分析和综合。指出了应用上述方法所研制的软件的效果。介绍了对研究上述软件的出版物的评述。预计，智能规划问题的解决，将通过能从专用存储器取得信息的模块来保证。研制软件时，还应用了缓冲装置，以及现有知识和运算数据库。说明了程序模块的功能。分析了决策过程的动态特性。对广泛应用推演、问题分解和综合过程的智能问题解决程序的编制特点进行了评述。欧盟的工程和物理委员会对程序的纪制给予了很大的支持。