Porsche's Spirit - Independence 保时捷精神：独立

Porsche's Spirit - Timelessness 保时捷精神：永恒

顺便提下，这里的Prof. Dr. F. Porsche是常说的Ferry。

Note: Prof. Dr. F. Porsche showed here is the one we usually called Ferry.

Porsche's Spirit 保时捷精神

保时捷在其网络影院中放了这么两段1989年的电视广告，很有意思，翻译下，最近贴。

Announcing the Chinese translation of 2 TV spots of Porsche in 1989, which are recently posted in their Web Cinema.

Picture Credit: Porsche AG

New Mac OS X, old test 新系统，老测试

既然苹果公司在Mac OS X 10.5的矢量库中为Intel的处理器做了大量优化(见加速框架的发布说明)……我来测试下。感谢Lvli007的机器。
Since Apple Inc. is said to make many improves in vecLib of Mac OS X 10.5 to Intel's CPU(SeeAccelerate Release Notes), I'll check it. Thanks to Lvli007 for providing the computer.
Intel Core 2 Duo T7200:

Convolution (2048 x 256):

  microseconds  GFlops    microseconds  GFlops
   (average)   (average)     (best)     (best)
  ------------ ---------  ------------  ------
CPU # 1: 1345  0.7782   1338   0.7822
CPU # 2: 1343  0.7794   1338   0.7822


Complex Fast Fourier Transform (1024 elements):

  microseconds  GFlops    microseconds  GFlops
   (average)   (average)     (best)     (best)
  ------------ ---------  ------------  ------
CPU # 1: 5.183  9.878   5.113   10.01
CPU # 2: 5.189  9.866   5.125   9.99


Real Fast Fourier Transform (1024 elements):

  microseconds  GFlops    microseconds  GFlops
   (average)   (average)     (best)     (best)
  ------------ ---------  ------------  ------
CPU # 1: 3.369  6.839   3.345   6.888
CPU # 2: 3.335  6.909   3.291   7.001


Dot Product (1024 elements):

  microseconds  GFlops    microseconds  GFlops
   (average)   (average)     (best)     (best)
  ------------ ---------  ------------  ------
CPU # 1: 0.2783  7.354   0.276   7.417
CPU # 2: 0.2747  7.451   0.276   7.417

看来确实快了，可以同上次10.4.8下的结果对比。看来经过不懈努力，SSE3还是有可能和Altivec拼一拼的。虽然，那个卷积还是那么寒碜。
但是，我意外地得到了Rosetta下conv的结果：
Ahh… better than previous results under 10.4.8. Seems that after a year's work, SSE3 eventually achieved the same order of Altivec, though the convolution's still poor.
But I got score of conv under Rosetta accidentally:

Convolution (2048 x 256):

  microseconds  GFlops    microseconds  GFlops
   (average)   (average)     (best)     (best)
  ------------ ---------  ------------  ------
CPU # 1: 193.7  5.402   190.7   5.489
CPU # 2: 193.4  5.41    190   5.507

不仅大大超过了模拟器下其他三项的性能，而且，7倍于Intel原生过程的性能……无语了。补充下，可以生成通用二进制程序的convMP.tar.bz2在此。
Not only speed over the other 3 tests under the emulator, but also 7 times faster than the native routeline for Intel… I have nothing to say about. BTW the convMP.tar.bz2 which can build Universal Binary is here.

Intuition tests 直觉测试 - 0

Zk从某处看来的问题。一个正四面体和一个棱长与之相等的正四棱锥，将正三角形的面贴合面，棱贴合棱，得到多少面体？

Question from Zk from somewhere ...If we put a face of a regular tetrahedron, to one of the triangle faces of a square pyramid with equilateral triangular sides and same edge length, face to face, edges to edges, then how many faces are there?

5
看不出？点    Can't imagine? Click

Ticketing Price of Beijing Metro 北京地铁的票价

降价，但是没有更高的运能——薄利，却没办法多销。其结果就是总收益降低。的确，没有哪个地铁系统能仅靠自身运营就盈利的，但总不至于连运营成本也打算要财政补贴吧。
要么财政把票价全给补贴了吧，反正政府有的是信用，永远能借到钱。

Lower the price, but no more capacity. Yes, there's no subway system get profit by saling tickets. But should everything including running costs be paid financially?
Finance comes from Tax.

Model DK16A in Taipinghu Depot

Asia-Europe 亚欧

有这样一个机构，铁路合作组织。几十年的工作，仍未换来陆桥飞架。没天堑也不能通途。

It exists, the Organization for Cooperation of Railways, for years. But still can't make a continent bridge as the Schengen area.

Of OS/2's failing 论OS/2的倒掉

(c) 2007, Oracle

一件事物的失败，原因多种多样。但是OS/2的倒掉，至少有个原因：IBM自己的个人计算机都不安装OS/2而是Windows。在这个报告上，最新的处理器先提供给对手，看来另一个带2的产品跟进了。

For one thing's failing, there're many reasons. But OS/2's failing must have a important one: IBM's PCs are shipping without OS/2 but Windows. Showing on the report, the newest processor is supplied to the comparator at first: It seems that another product named with 2 is following.

Pepsi Salt Soda 百事盐汽水

现在他们不仅卖糖水，也卖盐水了。

Now they not only sell sugar water, but also salt water.

Safety first 安全第一

国际品牌就是注意安全，庄臣的蚊香就比较安全，安全到烧到一半就灭……益损说得对，蚊香这个东西，还是中国造的比较好，也没听说谁家烧起来的。

International brands consider safety first, as Johnson's Coils, those never got their burning finished. Eason's right, Coils form China is better. There isn't any report of somewhere using Coils being burned.