nvidia power architect 面经

发信人: vbnmmnbv1986 (豆王之王), 信区: JobHunting
标  题: nvidia power architect 面经
发信站: BBS 未名空间站 (Sat Jan 25 12:03:02 2014, 美东)

已经gg,记得的一些题目分享给大家，同时也看看大家有什么解法，自己现在还不是很
确定:) 因为是一个architect的职位，所以不是纯软件的问题，有的可能需要一些
power的背景知识。

1. Suppose we have 2 pipelined hardware multipliers(or some other hardware).
One is working at 1GHz with 2 operations executed in parallel at the same
time. The other one is at 500GHz with 4 operations. Suppose we have
transistors of 3 types(low leaky(30%),middle leaky(50%) and high leaky(70%))
and here leaky means leakage power of the transistor. Which multiplier
should we use considering the 3 types of transistor?

2.In the new mobile phone, we can either choose to use a 1GHz solo core or
500MHz duo core processor. What tradeoffs should we consider?

3. We run two video game benchmarks on our new designed SOC. The two
benchmarks have the same instruction set. The benchmark with higher power
consumption always work well while the other one always get stuck. What can
be the problems?

4.In Linux, we use virtual address.So each process will think it has 4 GB
memory space even if the real memory is only 2GB. Now suppose we do not have
MMU and programmer use real physical address in their program. We only have
small size of physical memory. How can we design the system?
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http://www.mitbbs.com/article_t/JobHunting/32614007.html

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