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Old 2010-12-17, 20:13   #100
Brain
 
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Dec 2009
Peine, Germany

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Default ATI Radeon 5770 on Core i5 750 @3.7GHz

Code:
F:\Eigene Dateien\Prime95\ppsieve-cl>tpsieve-cl-x86-windows.exe -i 480000-484999
_09dec2010.txt -p 2601e12 -P 2602e12
tpsieve version cl-0.2.3c (testing)
Found K's from 3 to 9999999.
Found N's from 480000 to 485000.
nstart=480000, nstep=28
Read 16904938 terms from NewPGen format input file `480000-484999_09dec2010.txt'

tpsieve initialized: 3 <= k <= 9999999, 480000 <= n < 485000
Sieve started: 2601000000000000 <= p < 2602000000000000
Resuming from checkpoint p=2601016269443073 in tpcheck2601e12.txt
Thread 0 starting
Detected 160 multiprocessors (800 SPUs) on device 0.
nstep changed to 22
CL setup complete.
cthread_count = 10240
2601017751453061 | 40467*2^481227+1
p=2601017752129537, 24.71M p/sec, 0.68 CPU cores, 1.8% done. ETA 18 Dec 08:04
p=2601019389743105, 25.79M p/sec, 0.71 CPU cores, 1.9% done. ETA 18 Dec 07:47
2601020071189121 | 825711*2^481790-1
p=2601021025259521, 27.26M p/sec, 0.74 CPU cores, 2.1% done. ETA 18 Dec 07:32
2601022079467697 | 9536745*2^483550+1
p=2601022663659521, 27.31M p/sec, 0.75 CPU cores, 2.3% done. ETA 18 Dec 07:24
2601022757818439 | 8955831*2^483464+1
p=2601024314118145, 27.50M p/sec, 0.75 CPU cores, 2.4% done. ETA 18 Dec 07:18
p=2601025963528193, 27.49M p/sec, 0.75 CPU cores, 2.6% done. ETA 18 Dec 07:15
ATI Default Catalyst 10.11

Last fiddled with by Brain on 2010-12-17 at 20:14 Reason: Driver added
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Old 2010-12-18, 01:01   #101
cipher
 
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Feb 2007

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Thanks Brain for the benchmark, i don't think its using all the processors available in the GPU? that number just seems really slow. I get about 223.5M p/sec on my GTX 465 and it is barely using 25% of the GPU power. Maybe it is starting 1 multi thread out of 160.

Any thoughts? can any one else confirm?

Last fiddled with by cipher on 2010-12-18 at 01:06
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Old 2011-02-02, 21:56   #102
Blackwood
 
Oct 2010

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I'm getting 9.5M p/sec using one core of an Athlon X2 5000+ (2.6GHz). Running two threads gives me 1.75 CPU usage and a rate of 16.5M p/sec.
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Old 2011-02-02, 22:22   #103
Flatlander
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"Chris"
Feb 2005
England

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i5 M460 laptop, 4 threads

File 485-490k @ 991T
85m p/sec
3.99x2527MHz (CPU-Z says 2660MHz)

edit:

Quote:
Originally Posted by Oddball View Post
...Switching from the 64 bit version to the SSE2 version boosts performance to an astonishing 134M p/sec
Oh, looks like I should try that next time.

edit: Nope. Just 58m p/sec

Last fiddled with by Flatlander on 2011-02-02 at 22:55
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Old 2011-02-08, 02:22   #104
Flatlander
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"Chris"
Feb 2005
England

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i7-2600k @ 4.3GHz, 8 threads

File 480-485k @ 4435T
250.2m p/sec
7.97 CPU
Blocksize 3650k
Chunksize 32k

Last fiddled with by Flatlander on 2011-02-08 at 02:23
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Old 2012-04-09, 07:20   #105
Puzzle-Peter
 
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Jun 2009

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Is it possible to tweak the code so it performs only a twin sieve? If yes, how?

I'm looking for a way to sieve for triples or quadruples without having NewPGen do the initial sieving. I tried fermfact but it does not remove enough candidates due to sieving only the +1 side so I end up with gigantic files.

Thanks
Peter
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Old 2013-02-05, 01:35   #106
henryzz
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"David"
Sep 2007
Cambridge (GMT/BST)

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I thought the source for newpgen was unavailable but I just found it at http://jpenne.free.fr/NewPGen/.
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