Is your P4 feeling sluggish?

Prime95 · 2003-02-20, 04:19

If so, watch "the latest client software" thread tomorrow. If the mersenne.org FTP site we're up you could make your P4 perform like a champ right now!

dswanson · 2003-02-20, 05:18

What a tease!!! Are you going to give us more details, or do we just have to suffer till the morn?

Ian_H · 2003-02-20, 11:42

Drooling and waiting... ;)

lycorn · 2003-02-20, 11:58

I´m using a P4 1,6 GHz (with SDRAM, not DDR) that performs decently when LLing (0.038sec/iter on 9M exponents), but is real crap at Trial Factoring! I´m currently doing some TF up to 59 bits on the 46M range, and this P4 1,6 has exactly the same performance of a P3-700 I´m also using

. I knew P4s weren´t that good at TFing, but I never supposed them to be *THIS* bad. Is this normal? Will the new version do something about this?

Xyzzy · 2003-02-20, 12:36

The SSE2 optimizations for factoring don't kick in until 64 bits... I have found that a 1.5GHz XP is 2x faster at factoring to 63 bits than a 2.4GHz P4... (Of course, once you hit the optimizations the P4 smokes the XP!)

whilden · 2003-02-20, 13:21

/me eyes 40+ghz of P4 devil

lycorn · 2003-02-20, 13:47

Xyzzy wrote:

The SSE2 optimizations for factoring don't kick in until 64 bits...

Yeah, I´m aware of that. And it doesn´t surprise me at all that the XP is a lot faster than the P4 as long as we keep SSE2 out of the way. What I found amazing was the comparison between the P4 and the P3, specially at less than half of the clock speed...

Xyzzy · 2003-02-20, 14:36

The P3 has a pretty decent floating point unit, especially compared to the P4... It isn't as kick-ass as the XP's FPU, but it is decent...

To get the P4 to scale so high in frequency, Intel had to make a lot of compromises!

QuintLeo · 2003-02-20, 14:40

I ahve to wonder if this is over and above the 23.1 improvements.

*waiting impatiently*

9-)

roy1942 · 2003-02-20, 18:00

Hey, the FTP site seems to be up now! Where's the new stuff?

Our patience has been 'worn out' watching LL tests go "1.00%....1.01%..." and we have none left. We want our new software now!

JC · 2003-02-20, 18:24

Version 23.2 has been posted. Read the whatsnew.txt.. :(

2003-02-20, 04:19	#1
Prime95 P90 years forever! Aug 2002 Yeehaw, FL 16546₈ Posts	Is your P4 feeling sluggish? If so, watch "the latest client software" thread tomorrow. If the mersenne.org FTP site we're up you could make your P4 perform like a champ right now!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Subproject #12: Wave 3 (Once More, With Feeling)	Dubslow	Aliquot Sequences	6	2013-01-03 16:12
Feeling nostalgic? Anyone?	Damian	Lounge	5	2009-12-15 11:21
Tony Reix, I'm feeling rejected :)	Prime95	Lounge	2	2007-02-26 08:05
What a feeling!	edorajh	Lounge	6	2003-11-25 10:06

2003-02-20, 05:18	#2
dswanson Aug 2002 200₁₀ Posts	What a tease!!! Are you going to give us more details, or do we just have to suffer till the morn?

2003-02-20, 11:42	#3
Ian_H Aug 2002 Europe 2·3·5 Posts	Drooling and waiting... ;)

2003-02-20, 11:58	#4
lycorn Sep 2002 Oeiras, Portugal 2⁶·23 Posts	I´m using a P4 1,6 GHz (with SDRAM, not DDR) that performs decently when LLing (0.038sec/iter on 9M exponents), but is real crap at Trial Factoring! I´m currently doing some TF up to 59 bits on the 46M range, and this P4 1,6 has exactly the same performance of a P3-700 I´m also using . I knew P4s weren´t that good at TFing, but I never supposed them to be THIS bad. Is this normal? Will the new version do something about this?

2003-02-20, 12:36	#5
Xyzzy "Mike" Aug 2002 2⁵×257 Posts	The SSE2 optimizations for factoring don't kick in until 64 bits... I have found that a 1.5GHz XP is 2x faster at factoring to 63 bits than a 2.4GHz P4... (Of course, once you hit the optimizations the P4 smokes the XP!)

2003-02-20, 13:21	#6
whilden Aug 2002 29 Posts	/me eyes 40+ghz of P4 devil

2003-02-20, 13:47	#7
lycorn Sep 2002 Oeiras, Portugal 2⁶·23 Posts	Xyzzy wrote: The SSE2 optimizations for factoring don't kick in until 64 bits... Yeah, I´m aware of that. And it doesn´t surprise me at all that the XP is a lot faster than the P4 as long as we keep SSE2 out of the way. What I found amazing was the comparison between the P4 and the P3, specially at less than half of the clock speed...

2003-02-20, 14:36	#8
Xyzzy "Mike" Aug 2002 2⁵·257 Posts	The P3 has a pretty decent floating point unit, especially compared to the P4... It isn't as kick-ass as the XP's FPU, but it is decent... To get the P4 to scale so high in frequency, Intel had to make a lot of compromises!

2003-02-20, 14:40	#9
QuintLeo Oct 2002 Lost in the hills of Iowa 2⁶·7 Posts	I ahve to wonder if this is over and above the 23.1 improvements. waiting impatiently 9-)

2003-02-20, 18:00	#10
roy1942 Aug 2002 47 Posts	Hey, the FTP site seems to be up now! Where's the new stuff? Our patience has been 'worn out' watching LL tests go "1.00%....1.01%..." and we have none left. We want our new software now!

2003-02-20, 18:24	#11
JC Aug 2002 Belgium 5² Posts	Version 23.2 has been posted. Read the whatsnew.txt.. :(