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2012-04-06
, 22:33
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Posts: 1,539 |
Thanked: 1,604 times |
Joined on Oct 2011
@ With my N9
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#122
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Originally Posted by Dragoss91
Nothing else was running?
You mean in what circumstances rebooted ? It was a completely random reboot , I just unlocked the phone and slided the menu down when suddenly the phone freezed and after 10 seconds rebooted .
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Arie|www.everythingn9.com|Nokia N9 64GB x2|Nokia N950
@everythingn9
Temporary Inception Fix
Times Banned from TMO: 4
Arie|www.everythingn9.com|Nokia N9 64GB x2|Nokia N950
@everythingn9
Temporary Inception Fix
Times Banned from TMO: 4
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2012-04-06
, 22:41
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Posts: 617 |
Thanked: 338 times |
Joined on Mar 2011
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#123
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Originally Posted by Arie
Nope . This situation reminded me of N900 when I was tweaking voltages , sometimes it was rebooting with no reason , not even under load . And I remember I got this fixed by increasing voltage very little .
Nothing else was running?
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N9 and N900 , the beauty and the beast
N9 and N900 , the beauty and the beast
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2012-04-07
, 05:53
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Posts: 1,269 |
Thanked: 3,961 times |
Joined on May 2011
@ Brazil
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#124
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Originally Posted by Dragoss91
I confirm that the overclocking is very real and worth using (in some cases). Here I run a C calculation (for mu0 of type Ia supernovae in cosmology) with 100 thousand numerical integrals using double precision :
... running at 1.3ghz ... it seems to be pointless because there's no improvements in the smoothness of the UI .
Nokia-N9% mu0_dp.o
1000 MHz : 28.438446 s
1100 MHz : 25.801086 s (1,1022 x)
1200 MHz : 23.743835 s (1,1977 x)
1300 MHz : 21.913544 s (1,2978 x)
1400 MHz : - (reboot)
As we can see above, the speed up is approx. the expected value.
So, with N9 @ 1,2 GHz (for example) we really get it 20% faster for running CPU intensive tasks.
Comparing with my N900 with and without OC (OverClocking) :
600 MHz : 54.061523 s
850 MHz : 39.386322 s
900 MHz : 35.555176 s
950 MHz : 33.086578 s
1000 MHz : 31.480408 s
1100 MHz : 28.668640 s
1150 MHz : - (reboot)
And my Nokia N810 : 400 MHz : 450.490479 s. Maybe gcc is not well optimized @ Maemo 4.
A Intel Core i7 930, 4 cores @ 1,60-2,80 GHz, 8MB cache, running Linux 64 bits : 1.847429 s (single core calculation).
Conclusions :
- N9 @ 1.0 GHz is 90% faster than N900 @ 600 MHz, greater than 66.67% expected by clock only;
- N9 @ 1.0 GHz is 11% faster than N900 @ 1.0 GHz OC;
- N9 @ 1.0 GHz has the same speed of N900 @ 1.1 GHz OC;
- N9's TI OMAP 3630 is better than N900's TI OMAP 3430 besides the clock setting;
- N9 @ 1.3 GHz OC is 31% faster than N900 @ 1.1 GHz OC, both at maximum OC for my N9 & N900;
- N9 @ 1.0 GHz is 14.8x faster than N810;
- N900 @ 600 MHz is 7.3x faster than N810;
- Core i7 930 is 14.4x faster than N9 @ 1.0 GHz, 28.3x faster than N900 @ 600 MHz, 243x faster than N810.
PS : I've compiled mu0_dp.c with "gcc -O3 -funroll-loops -mtune=native -lm -o mu0_dp.o mu0_dp.c" directly on my devices.
__________________
Python, C/C++, Qt and CAS developer. For Maemo/MeeGo/Sailfish :
Integral, Derivative, Limit - calculating mathematical integrals, derivatives and limits. SymPy - Computer Algebra System.
MatPlotLib - 2D & 3D plots in Python. IPython - Python interactive shell.
-- My blog about mobile & scientific computing ---
Sailfish : Sony Xperia X, Gemini, Jolla, Jolla C, Jolla Tablet, Nexus 4. Nokia N9, N900, N810.
Python, C/C++, Qt and CAS developer. For Maemo/MeeGo/Sailfish :
Integral, Derivative, Limit - calculating mathematical integrals, derivatives and limits. SymPy - Computer Algebra System.
MatPlotLib - 2D & 3D plots in Python. IPython - Python interactive shell.
-- My blog about mobile & scientific computing ---
Sailfish : Sony Xperia X, Gemini, Jolla, Jolla C, Jolla Tablet, Nexus 4. Nokia N9, N900, N810.
Last edited by rcolistete; 2012-04-07 at 16:02. Reason: Added link to mu0_dp.c, comment about TI OMAP 3630 x 3430 and gcc on Maemo 4
| The Following 16 Users Say Thank You to rcolistete For This Useful Post: | ||
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2012-04-07
, 07:54
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Guest |
Posts: n/a |
Thanked: 0 times |
Joined on
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#125
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Originally Posted by rcolistete
very helpfull info thnx
I confirm that the overclocking is very real and worth using (in some cases). Here I run a C calculation (for mu0 of type Ia supernovae in cosmology) with 100 thousand numerical integrals using double precision :
Nokia-N9% mu0_dp.o
1000 MHz : 28.438446 s
1100 MHz : 25.801086 s (1,1022 x)
1200 MHz : 23.743835 s (1,1977 x)
1300 MHz : 21.913544 s (1,2978 x)
1400 MHz : - (reboot)
As we can see above, the speed up is approx. the expected value.
So, with N9 @ 1,2 GHz (for example) we really get it 20% faster for running CPU intensive tasks.
Comparing with my N900 with and without OC (OverClocking) :
600 MHz : 54.061523 s
850 MHz : 39.386322 s
900 MHz : 35.555176 s
950 MHz : 33.086578 s
1000 MHz : 31.480408 s
1100 MHz : 28.668640 s
1150 MHz : - (reboot)
And my Nokia N810 : 400 MHz : 450.490479 s. Maybe gcc is well optimized @ Maemo 4.
A Intel Core i7 930, 4 cores @ 1,60-2,80 GHz, 8MB cache, running Linux 64 bits : 1.847429 s (single core calculation).
Conclusions :
- N9 @ 1.0 GHz is 90% faster than N900 @ 600 MHz, greater than 66.67% expected by clock only;
- N9 @ 1.0 GHz is 11% faster than N900 @ 1.0 GHz OC;
- N9 @ 1.0 GHz has the same speed of N900 @ 1.1 GHz OC;
- N9 @ 1.3 GHz OC is 31% faster than N900 @ 1.1 GHz OC, both at maximum OC for my N9 & N900;
- N9 @ 1.0 GHz is 14.8x faster than N810;
- N900 @ 600 MHz is 7.3x faster than N810;
- Core i7 930 is 14.4x faster than N9 @ 1.0 GHz, 28.3x faster than N900 @ 600 MHz, 243x faster than N810.
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2012-04-07
, 08:13
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Posts: 85 |
Thanked: 383 times |
Joined on Jan 2010
@ Hong Kong
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#126
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Originally Posted by pipould
I have modified the scripts a bit. You may try again with the same link and let us know if it works? Thanks.
Despite I carefully followed your instructions nothing seems so happens when i click on the icons...
From icons: overclock not reflected in conky But if I overclock from bash, then I can overclock (1.1>1.2) from the icons.
From Bash, launching the scripts(/opt/overclock/*) : overclock OK
Edit:
Creamy goodness confirmed (see below) that downclock is impossible with the last version.
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2012-04-07
, 09:44
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Posts: 617 |
Thanked: 338 times |
Joined on Mar 2011
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#127
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Originally Posted by rcolistete
I didn't say OC is useless at all , I was talking about UI only . Can you give us this benchmark please ? Is pretty usefull .
I confirm that the overclocking is very real and worth using (in some cases). Here I run a C calculation (for mu0 of type Ia supernovae in cosmology) with 100 thousand numerical integrals using double precision :
__________________
N9 and N900 , the beauty and the beast
N9 and N900 , the beauty and the beast
| The Following 2 Users Say Thank You to Dragoss91 For This Useful Post: | ||
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2012-04-07
, 15:17
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Posts: 1,269 |
Thanked: 3,961 times |
Joined on May 2011
@ Brazil
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#128
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Originally Posted by Dragoss91
Yeah, I know. N9 has a lot more RAM (1GB x 256 MB) than N900, the Qt Quick UI is smoother, so our overclocking perception is not as visible as on N900.
I didn't say OC is useless at all , I was talking about UI only . Can you give us this benchmark please ? Is pretty usefull .
I've updated my previous post with links for the C source code (with comments in Portuguese because I am Brazilian and the code was not originally meant to be public).
__________________
Python, C/C++, Qt and CAS developer. For Maemo/MeeGo/Sailfish :
Integral, Derivative, Limit - calculating mathematical integrals, derivatives and limits. SymPy - Computer Algebra System.
MatPlotLib - 2D & 3D plots in Python. IPython - Python interactive shell.
-- My blog about mobile & scientific computing ---
Sailfish : Sony Xperia X, Gemini, Jolla, Jolla C, Jolla Tablet, Nexus 4. Nokia N9, N900, N810.
Python, C/C++, Qt and CAS developer. For Maemo/MeeGo/Sailfish :
Integral, Derivative, Limit - calculating mathematical integrals, derivatives and limits. SymPy - Computer Algebra System.
MatPlotLib - 2D & 3D plots in Python. IPython - Python interactive shell.
-- My blog about mobile & scientific computing ---
Sailfish : Sony Xperia X, Gemini, Jolla, Jolla C, Jolla Tablet, Nexus 4. Nokia N9, N900, N810.
Last edited by rcolistete; 2012-04-07 at 15:36.
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2012-04-07
, 19:33
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Posts: 110 |
Thanked: 62 times |
Joined on Mar 2012
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#129
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Originally Posted by amandalam
Working like a charm now
I have modified the scripts a bit. You may try again with the same link and let us know if it works? Thanks.
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2012-04-08
, 22:52
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Moderator |
Posts: 7,109 |
Thanked: 8,820 times |
Joined on Oct 2007
@ Vancouver, BC, Canada
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#130
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Originally Posted by nieldk
I confirm that I can get 1.1GHz on open mode too.
tried it on open mode kernel, works, did not use aegisctl or opensh, just devel-su
I'm using coderus' sudo so everything feels like "old times" again... None of this silly devel-su stuff..
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Please don't send me a private message, post to the appropriate thread.
Thank you all for your donations!
N9 and N900 , the beauty and the beast