[理工] 計組
1.To achieve the speed-up of 91 on the previous larger problem with 100
processor , we assumed the load was perfectly balanced. That is, each of
the 100 processors had 1% of the work to do . Instead , show the
impack on speed-up if one processors's load is higher than all
the rest. Calculate at 2% and 5% .
ans:
If one process has 2% of the parallel load, then it must do 2%*10000
or 200 additions, and the other 99 will share the remaining 9800.
我看不太懂什麼是 parallel load , 這題到底在問什麼??
2.(T/F)A runing process is swapped to disk entirely when new page
are moved into the main memory.
and:False
why??是因為要被replace的page不是dirty的嗎?
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