iMac vs Cray-1

How many Cray-1s do you have on your desk?

Benchmark here: http://software.inte...linpack-download/

Mon 31 May 2010 22:08:42 BST Intel(R) LINPACK data Current date/time: Mon May 31 22:08:42 2010 CPU frequency: 2.660 GHz Number of CPUs: 4 Number of threads: 4 Parameters are set to: Number of tests : 9 Number of equations to solve (problem size) : 15000 14000 13000 12000 11000 10000 8000 6000 1000 Leading dimension of array : 15000 14008 13000 12008 11000 10008 8008 6008 1000 Number of trials to run : 1 2 2 2 2 2 2 3 4 Data alignment value (in Kbytes) : 4 4 4 4 4 4 4 4 4 Maximum memory requested that can be used = 1800304096, at the size = 15000 ============= Timing linear equation system solver ================= Size LDA Align. Time(s) GFlops Residual Residual(norm) 15000 15000 4 59.032 38.1224 2.047769e-10 3.225271e-02 14000 14008 4 47.271 38.7070 1.657382e-10 2.993055e-02 14000 14008 4 48.464 37.7542 1.657382e-10 2.993055e-02 13000 13000 4 37.813 38.7432 1.529584e-10 3.200539e-02 13000 13000 4 38.558 37.9944 1.529584e-10 3.200539e-02 12000 12008 4 30.612 37.6413 1.281576e-10 3.145608e-02 12000 12008 4 30.292 38.0399 1.281576e-10 3.145608e-02 11000 11000 4 23.013 38.5692 1.239646e-10 3.616564e-02 11000 11000 4 23.267 38.1473 1.239646e-10 3.616564e-02 10000 10008 4 17.262 38.6313 8.907336e-11 3.140817e-02 10000 10008 4 17.156 38.8699 8.907336e-11 3.140817e-02 8000 8008 4 9.045 37.7529 6.260895e-11 3.444035e-02 8000 8008 4 8.982 38.0143 6.260895e-11 3.444035e-02 6000 6008 4 3.832 37.6013 3.564328e-11 3.456634e-02 6000 6008 4 3.784 38.0722 3.564328e-11 3.456634e-02 6000 6008 4 3.837 37.5445 3.564328e-11 3.456634e-02 1000 1000 4 0.022 29.8207 9.419757e-13 3.212379e-02 1000 1000 4 0.022 29.8139 9.419757e-13 3.212379e-02 1000 1000 4 0.023 28.5959 9.419757e-13 3.212379e-02 1000 1000 4 0.023 29.4575 9.419757e-13 3.212379e-02 Performance Summary (GFlops) Size LDA Align. Average Maximal 15000 15000 4 38.1224 38.1224 14000 14008 4 38.2306 38.7070 13000 13000 4 38.3688 38.7432 12000 12008 4 37.8406 38.0399 11000 11000 4 38.3582 38.5692 10000 10008 4 38.7506 38.8699 8000 8008 4 37.8836 38.0143 6000 6008 4 37.7393 38.0722 1000 1000 4 29.4220 29.8207 End of tests Mon 31 May 2010 22:17:40 BST

Cray-1 pulled around 250 MFLOPS; my iMac does 38GFLOPS. So I've got about 150 Cray-1s on my desk.

When you say it like that, it seems a bit excessive; all that computer power just to look at boobies on the internet.

Post #327,224 by pwhysall 6/2/10 12:54:35 PM Reply	iMac vs Cray-1 How many Cray-1s do you have on your desk? Benchmark here: http://software.inte...linpack-download/ Mon 31 May 2010 22:08:42 BST Intel(R) LINPACK data Current date/time: Mon May 31 22:08:42 2010 CPU frequency: 2.660 GHz Number of CPUs: 4 Number of threads: 4 Parameters are set to: Number of tests : 9 Number of equations to solve (problem size) : 15000 14000 13000 12000 11000 10000 8000 6000 1000 Leading dimension of array : 15000 14008 13000 12008 11000 10008 8008 6008 1000 Number of trials to run : 1 2 2 2 2 2 2 3 4 Data alignment value (in Kbytes) : 4 4 4 4 4 4 4 4 4 Maximum memory requested that can be used = 1800304096, at the size = 15000 ============= Timing linear equation system solver ================= Size LDA Align. Time(s) GFlops Residual Residual(norm) 15000 15000 4 59.032 38.1224 2.047769e-10 3.225271e-02 14000 14008 4 47.271 38.7070 1.657382e-10 2.993055e-02 14000 14008 4 48.464 37.7542 1.657382e-10 2.993055e-02 13000 13000 4 37.813 38.7432 1.529584e-10 3.200539e-02 13000 13000 4 38.558 37.9944 1.529584e-10 3.200539e-02 12000 12008 4 30.612 37.6413 1.281576e-10 3.145608e-02 12000 12008 4 30.292 38.0399 1.281576e-10 3.145608e-02 11000 11000 4 23.013 38.5692 1.239646e-10 3.616564e-02 11000 11000 4 23.267 38.1473 1.239646e-10 3.616564e-02 10000 10008 4 17.262 38.6313 8.907336e-11 3.140817e-02 10000 10008 4 17.156 38.8699 8.907336e-11 3.140817e-02 8000 8008 4 9.045 37.7529 6.260895e-11 3.444035e-02 8000 8008 4 8.982 38.0143 6.260895e-11 3.444035e-02 6000 6008 4 3.832 37.6013 3.564328e-11 3.456634e-02 6000 6008 4 3.784 38.0722 3.564328e-11 3.456634e-02 6000 6008 4 3.837 37.5445 3.564328e-11 3.456634e-02 1000 1000 4 0.022 29.8207 9.419757e-13 3.212379e-02 1000 1000 4 0.022 29.8139 9.419757e-13 3.212379e-02 1000 1000 4 0.023 28.5959 9.419757e-13 3.212379e-02 1000 1000 4 0.023 29.4575 9.419757e-13 3.212379e-02 Performance Summary (GFlops) Size LDA Align. Average Maximal 15000 15000 4 38.1224 38.1224 14000 14008 4 38.2306 38.7070 13000 13000 4 38.3688 38.7432 12000 12008 4 37.8406 38.0399 11000 11000 4 38.3582 38.5692 10000 10008 4 38.7506 38.8699 8000 8008 4 37.8836 38.0143 6000 6008 4 37.7393 38.0722 1000 1000 4 29.4220 29.8207 End of tests Mon 31 May 2010 22:17:40 BST Cray-1 pulled around 250 MFLOPS; my iMac does 38GFLOPS. So I've got about 150 Cray-1s on my desk. When you say it like that, it seems a bit excessive; all that computer power just to look at boobies on the internet.
Post #327,245 by lincoln 6/2/10 3:10:02 PM Reply	I think technology has improved a little bit in the last 28 years. The Cray-1 was discontinued in 1982. Still, an interesting comparison. "Chicago to my mind was the only place to be. ... I above all liked the city because it was filled with people all a-bustle, and the clatter of hooves and carriages, and with delivery wagons and drays and peddlers and the boom and clank of freight trains. And when those black clouds came sailing in from the west, pouring thunderstorms upon us so that you couldn't hear the cries or curses of humankind, I liked that best of all. Chicago could stand up to the worst God had to offer. I understood why it was built--a place for trade, of course, with railroads and ships and so on, but mostly to give all of us a magnitude of defiance that is not provided by one house on the plains. And the plains is where those storms come from." -- E.L. Doctorow
Post #327,264 by static 6/2/10 8:50:09 PM Reply	It is widely accepted... ... that the most basic mobile phone has more computing power than the Apollo 11 LEM. :-) Wade. Q:Is it proper to eat cheeseburgers with your fingers? A:No, the fingers should be eaten separately.
Post #327,639 by lincoln 6/9/10 3:14:36 PM Reply	And the final computer backup on the early shuttles was a Hewlett-Packard programmable calculator carried in one astronaut's pants pocket. "Chicago to my mind was the only place to be. ... I above all liked the city because it was filled with people all a-bustle, and the clatter of hooves and carriages, and with delivery wagons and drays and peddlers and the boom and clank of freight trains. And when those black clouds came sailing in from the west, pouring thunderstorms upon us so that you couldn't hear the cries or curses of humankind, I liked that best of all. Chicago could stand up to the worst God had to offer. I understood why it was built--a place for trade, of course, with railroads and ships and so on, but mostly to give all of us a magnitude of defiance that is not provided by one house on the plains. And the plains is where those storms come from." -- E.L. Doctorow
Post #327,671 by static 6/9/10 9:13:30 PM 6/9/10 11:18:48 PM Reply	I can believe it. I have to say one of the most underplayed scenes in the movie 'Apollo 13' was where Lovell (Tom Hanks) was recalculating a mess of vectors for re-aligning their craft whilst enroute back to earth. Lovell did the six calculations correctly in the same time six men in Mission Control did one each. :-O To the discerning viewer, that explained why it was Lovell who was in the space craft. Wade. Edit: fixed the names as I'd badly mis-remembered them. Q:Is it proper to eat cheeseburgers with your fingers? A:No, the fingers should be eaten separately. Edited by static June 9, 2010, 11:18:48 PM EDT Expand All History
Post #327,674 by Another Scott 6/9/10 9:28:15 PM 6/9/10 11:21:07 PM Reply	(Obsolete. :-) Edited by Another Scott June 9, 2010, 11:21:07 PM EDT Expand All History
Post #327,680 by static 6/9/10 11:18:08 PM Reply	I sure did miss, didn't I. Q:Is it proper to eat cheeseburgers with your fingers? A:No, the fingers should be eaten separately.
Post #327,682 by drook 6/10/10 12:02:27 AM Reply	Was wondering what Lyle was doing up there -- Drew
Post #327,683 by Another Scott 6/10/10 12:10:58 AM Reply	Hah. :-)
Post #327,658 by altmann 6/9/10 5:20:50 PM Reply	Build your own Apollo Guidance Computer http://www.galaxiki....-no-kidding.shtml

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