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lorenzo de martin topranin
 
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2009-12-11 13:52:00

Hello everybody, it's someone who know if exist one cell phone for work with boinc allways on?

thank you

bye bye
Rakarin
 
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2009-12-12 00:37:51

lorenzo de martin topranin wrote:
Hello everybody, it's someone who know if exist one cell phone for work with boinc allways on?
thank you
bye bye


Hello,

I'm sorry, but no. Not for cell phones, and not for iPhone or iTouch.

There are three problems. (I will try to write this so a web site can translate it. Some words are technical.)

(1) This will drain the battery very very fast. Battery life is designed for very little use from the CPU (processor, what does the math). Cell phones have short bursts of processor use (when you make a call, take a picture). The battery life is designed for short bursts of use. "Always on" use, every minute, every hour, every day, will drain the battery very fast.

(2) Computing architecture. There are several cell phone operating systems. There are several cell phone processors (CPU). Someone would have to create BOINC and a BOINC project (like SETI@Home) for each mix of operating system and processor. With Android cell phones, this may be possible. Android is an open-source operating system, and Android phones use ARM Cortex (I think Cortex-5) processors. All Android based cell phones use Android for the operating system, and ARM Cortex processors, always and only. There is no mix. There is still problem (1) and problem (3).

(3) Computing Power. Cell phone processors are not powerful. They have to relay call (SMS, MMS, texting, VoIP) signals quickly. They have to take (small) pictures, and some take (small, low resolution) movies. They play simple games. They are designed to use little battery life.

BOINC projects use math. They use a lot of complex math. Cell phones are designed to do simple math. Cell phones do not do trigonometry or calculus quickly. Also, cell phones handle "floating point" math much more slowly. This is numbers that have a decimal. "8.2 ÷ 3.6" or "√7" or "cos17" have decimals, and are floating point math. A cell phone takes many more instruction cycles, and so more time and more power, to do math like these. So, on a cell phone, BOINC projects that use advanced math (most physics, math, chemistry, and biology projects) would take a very long time to do a small amount of work.

The amount of work it takes to design a project, make it work, and convince people to use it, would get only a small amount of scientific (computing) work in return.

Mike
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