Posts by Mahoujin Tsukai

1) Message boards : Number crunching : GeForce GT430 vs. GT520 for HP MicroServer (Message 1166950)
Posted 1 Nov 2011 by Profile Mahoujin Tsukai
Post:
With only a 150 watt power supply, I would think you would run into trouble with any GPU. You certainly wouldn't have much, if any head room. That could cause a lot of errors, and system stability problems.

Steve

Yes, that 150 watt power supply is going to be a problem, and that machine already has FIVE hard drives.

I think you should not add in a discreet graphics card.
2) Message boards : Number crunching : nVidia GT 440 (DDR3 model) RAC? (Message 1166949)
Posted 1 Nov 2011 by Profile Mahoujin Tsukai
Post:
What kind of RAC will the above card (default speed, no overclock) generate with 24/7 SETI@HOME crunching? They don't look that expensive to me and the power consumption isn't much.

Who is using one for SETI now?
3) Message boards : Number crunching : Old laptop (Message 1109369)
Posted 24 May 2011 by Profile Mahoujin Tsukai
Post:
I have an old laptop which has a busted hard disk, but can still boot from USB or SD card.

How can I get it to contribute to SETI@Home?

And if I run linux, is there any crunching performance penalty over using Windows XP?
4) Message boards : Number crunching : Complexity of WUs (Message 1097424)
Posted 15 Apr 2011 by Profile Mahoujin Tsukai
Post:
In terms of the time taken to complete one workunit, am I right to say that:
SETI@home Enhanced < Astropulse v5 < Astropulse v5.05 ?

I was wondering if the less time consuming WUs should be left to the less powerful PCs.

5) Message boards : SETI@home Science : So Why SETI@home has failed to identify any Civilizations? (Message 1039063)
Posted 7 Oct 2010 by Profile Mahoujin Tsukai
Post:
What if ET is sending out signals in a form (non-electro magnetic wave) that isn't known to humans yet?

I wonder if anybody here has heard of 'psychic waves'. According to the book 'Psychic Discoveries' by Sheila Ostrander and Lynn Schroeder pg 92~93, there was an actual experiment carried out in the Soviet Union in the 1930s that showed the possibility of transmitting information via a form that wasn't EM. A person was placed into a a vessel that blocked all EM radiation, but someone outside the vessel was able to perform a 'telepathtic knockout' of the person inside that vessel.

Some of you may laugh at me pointing out such stuff in the 21st century, but I think it may be something worth looking at.
6) Message boards : Number crunching : ATI vs nVidia GPUs (Message 975947)
Posted 5 Mar 2010 by Profile Mahoujin Tsukai
Post:
More questions on graphics cards.

If I use two cards that cannot crossfire with each other (SLI in the case of nVidia), can I still crunch on both cards? I know one card will probably crunch faster than the other if cards of significant performance difference are used.

I use three cards and don't use SLI.

That souns like a relief. I need not let 'the graphics cards must run in SLI or crossfire mode' factor influence my decision on what graphic card to buy in future (if I add them one by one over months).
7) Message boards : Number crunching : ATI vs nVidia GPUs (Message 975943)
Posted 5 Mar 2010 by Profile Mahoujin Tsukai
Post:
More questions on graphics cards.

If I use two cards that cannot crossfire with each other (SLI in the case of nVidia), can I still crunch on both cards? I know one card will probably crunch faster than the other if cards of significant performance difference are used.
8) Message boards : Number crunching : ATI vs nVidia GPUs (Message 975849)
Posted 5 Mar 2010 by Profile Mahoujin Tsukai
Post:
Are there any statistics on the crunching speeds of ATI and nVidia GPUs at the moment?

Which one can crunch faster (at a similar price point)?
9) Message boards : Number crunching : PCI-e slot speed and crunching speed (Message 975848)
Posted 5 Mar 2010 by Profile Mahoujin Tsukai
Post:
What is the impact of the PCI-e slot speed on the crunching speed?

I know some motherboards available provide two PCI-e slots for graphics cards, but one of them will run at only 4x instead of 16x speed.

Will PCI-e slot speed have a drastic impact on crunching speeds?

Someone please let me know.
10) Message boards : SETI@home Science : Has anyone thought that... (Message 969265)
Posted 8 Feb 2010 by Profile Mahoujin Tsukai
Post:
There might be extra-terrestrial life out there, but it doesn't have the capability to send out signals (radio broadcasts, radar signals etc.) into space that can be picked up by instruments on Earth.
11) Message boards : SETI@home Science : Detecting alien signals from outer space (Message 969263)
Posted 8 Feb 2010 by Profile Mahoujin Tsukai
Post:
How sensitive are the SETI instruments used to scan outer space?

And what if an alien signal that reached one of the SETI satellites (or some other SETI instrument) was in a form that humans cannot decode/decipher/decrypt? (don't know which word to use). It'll just be discarded along with all the other junk signals that are received all the time right?

12) Message boards : Number crunching : Intel Atom processor (Message 958255)
Posted 23 Dec 2009 by Profile Mahoujin Tsukai
Post:
After some searching online, I realised that an Atom N280 (1.66 GHz) is on par with or slightly faster than a Pentium 4 1.6A (1.6GHz, 400MHz FSB, Northwood 130 nm) based on the SuperPi benchmark.

I assume that the Pentium 4-M 1.6 (1.6 GHz, 400MHz FSB, Northwood 130nm) has the same performace as it's desktop counterpart.

http://www.pcstats.com/articleview.cfm?articleid=1130&page=4
(SuperPi 1M completion time - 1 min 45 sec)

SuperPi 1M can be completed in 1 min 31 sec on an Atom N280 netbook.

So most of the netbooks out there today (using the N270 and N280 CPUs) have CPU performace similar to the latest notebooks of 2002 (running on Pentium 4-M CPU at 1.6 or 1.7 GHz). However, the Atom has many advantages over the Pentium 4-M such as much lower power consumption (2.5W vs 30W), an improved instruction set (no SSE3 and no SSSE3 on Pentium 4-M) and Hyper-Threading capability.

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_4_microprocessors
http://en.wikipedia.org/wiki/List_of_Intel_Atom_microprocessors
13) Message boards : Number crunching : Intel Atom processor (Message 958089)
Posted 22 Dec 2009 by Profile Mahoujin Tsukai
Post:
I know the Atom is weak, but how does it (I'm referring to the single core version) stand against a Pentium 4-M? (I'm neither referring to the much faster Pentium M nor the much hotter Mobile Pentium 4)?

And has anyone made a comparison between a top-of-the-line Pentium III processor (1.4 GHz, 133 MHz FSB) and a single core Atom?
14) Message boards : Number crunching : GPU vs CPU for crunching (Message 952330)
Posted 4 Dec 2009 by Profile Mahoujin Tsukai
Post:
Seriously, how much faster is an nVidia GPU (GeForce 9 or GT2XX cards) than an Intel CPU (Core 2 series) at crunching?
15) Message boards : Number crunching : Post your BOINC Startup 'CUDA' Info (Message 950475)
Posted 28 Nov 2009 by Profile Mahoujin Tsukai
Post:
I'm curious,
How many GFLOPS can an Intel Core 2 Quad Q6600 do at stock speed?
16) Message boards : Number crunching : PC technology becomes obsolete fast (Message 946085)
Posted 9 Nov 2009 by Profile Mahoujin Tsukai
Post:
Almost 2 years ago, I upgraded my PC to an Intel Q6600 with a new motherboard, 2GB DDR2 RAM, etc. It cost quite an amount of money. After some overclocking, it was a speed demon, crunching SETI@Home workunits more than 40x faster than my old overclocked Pentium III 1 GHz system. I was estatic for a while.

But now, I wonder if I had made the right choice. Most of the near-top-of-the-line computer parts I bought 2 years ago have devalued considerably.

PC technology advances VERY fast... maybe too fast.

I just wanted to say that what's top-of-the-line computer technology today won't be top-of-the-line for long. If you are going to spend alot on the best computer parts money can buy today, be prepared for serious depreciation.
17) Message boards : Number crunching : SETI 'avg. work done' decreasing (Message 928107)
Posted 23 Aug 2009 by Profile Mahoujin Tsukai
Post:
Is it normal?

In early 2008, I got 'avg. work down' of about 5000 in SETI@Home with the AK app. In mid-2009, it was slightly over 4000 and now, it is not even 4000.

I was using the AK app all the time (but am unaware if there was any update to the app over that time period).

What is causing the 'avg work done' to decrease?

I've been using a Q6600 OC to 3GHz with 2GB dual channel DDR2 all the time. I do not have a nVidia CUDA graphics card.
18) Message boards : Number crunching : nVidia 182.46 beta drivers (Message 879106)
Posted 25 Mar 2009 by Profile Mahoujin Tsukai
Post:
I wonder if participants in Folding@Home (those running GPU folding app) have the same problem of their screen being slow to update.
19) Message boards : Number crunching : nVidia 182.46 beta drivers (Message 879065)
Posted 25 Mar 2009 by Profile Mahoujin Tsukai
Post:
Disappointed...

I'm using them now and the slow screen update problem still seems to be present.
20) Message boards : Number crunching : nVidia 182.46 beta drivers (Message 879057)
Posted 25 Mar 2009 by Profile Mahoujin Tsukai
Post:
Anyone currently using the above drivers?

Does it fix the problem of slow screen update when running SETI CUDA?


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