疑问

csymmy

在seti的证书里
我以前是:
has participated in the SETI@home project since 23 July 2007, and has contributed 15,050 Cobblestones of computation (13.03 quadrillion floating-point operations) to SETI@home's search for extraterrestrial life.
而现在是:
has participated in the SETI@home project since 23 July 2007, and has contributed 28,830 Cobblestones of computation (0.86 trillion floating-point operations) to SETI@home's search for extraterrestrial life.

我的积分越来越多(从15,050增加到28,830)
但是为什么计算的量越来越少(从13.03 quadrillion floating-point operations减少到0.86 trillion floating-point operations)

Youth

单位都不一样了吧，quadrillion->trillion，具体是多少我也不清楚，反正看积分就好了：）

cnchina

自己搜一下嘛
Million, Billion, Trillion...
© Copyright 1999, Jim Loy

People sometimes ask me the names of the large numbers. Here is a table. The system used in the U.S. is not as logical as that used in other countries (like Great Britain, France, and Germany). In these other countries, a billion (bi meaning two) has twice as many zeros as a million, and a trillion (tri meaning three) has three times as many zeros as a million, etc. But the scientific community seems to use the American system.

Number of zeros U.S. & scientific community Other countries
3 thousand thousand
6 million million
9 billion 1000 million (1 milliard)
12 trillion billion
15 quadrillion 1000 billion
18 quintillion trillion
21 sextillion 1000 trillion
24 septillion quadrillion
27 octillion 1000 quadrillion
30 nonillion quintillion
33 decillion 1000 quintillion
36 undecillion sextillion
39 duodecillion 1000 sextillion
42 tredecillion septillion
45 quattuordecillion 1000 septillion
48 quindecillion octillion
51 sexdecillion 1000 octillion
54 septendecillion nonillion
57 octodecillion 1000 nonillion
60 novemdecillion decillion
63 vigintillion 1000 decillion
66 - 120   undecillion - vigintillion
303 centillion   
600   centillion

http://www.jimloy.com/math/billion.htm

也就是12个零是Q~，15个零是T~

Youth

这样的话，是不是Cobblestones到浮点操作数量的比例也改变了？

15,*** -> 13.** q
28,*** -> 0.86* t -> 860.* q

cnchina

计算量从来没法跟积分完全挂钩的。。
还记得你那篇有关积分计算的文章，
里面不就说了，积分的计算，不同的计算机给的分又不可能一样。。一个包多少分，同样计算量多少分，很难说公平的。。