The speed of DRAM is increasing by about 7% a year, while the performance of processors is increasing by about 60%. What is the consequence of this state of affairs in the short term? What is the consequence in the long term?
What will be an ideal response?
This is leading to the so?called memory wall, a barrier to progress as faster and faster processors require corresponding fast memory. In the short term, cache memory and on?chip cache can be used to help hide the effect of memory latency. Modern architectures like the Itanium can use speculative loads to read data before it is required and anticipate latency problems. All these latency hiding techniques reduce the effect of the growing disparity in memory?CPU operating speeds. In the long term it will probably be necessary to adopt alternative technologies for memory design.
You might also like to view...
False-positive and false-negative rates can be adjusted, and they are often complementary: Lowering one raises the other. List two situations in which false negatives are significantly more serious than false positives
What will be an ideal response?
A good DBMS incorporates the services of a ____ to organize the disk files in an optimal way, in order to minimize access time to the records.
A. sophisticated file manager B. simple file manager C. special operating system service D. specialized file system
Which of the following is not a category of functions?
A. Logical B. Financial C. Statistical D. Graphing
Distinguish between software quality and software security.
What will be an ideal response?