Long WU for weaker cards, why?

Message boards : Number crunching : Long WU for weaker cards, why?

Author	Message
rjenkins Send message Joined: 4 Dec 09 Posts: 4 Credit: 5,878,553 RAC: 0 Level Scientific publications	Message 16389 - Posted: 18 Apr 2010 \| 7:48:41 UTC
	I am using a double graphic cards motherboard. One is the GT220 and the other GT240. The GT220 will not finish the long WU in less than 24 hours, so no chance for a 50% bonus. Why is BOINC sending these WU to this card then? I understand that BOINC "WAS" doing science using the spare time of your computer. Now with these rules, the message is BUY better cards otherwise you won't get as good a bonus as other participants. I understand that you need fast return of the WU in order to prepare the next ones, but why sending long WU to weaker cards? You are pushing some people aside because they don't have money to buy the top graphic cards. I tought the initial idea of BOINC was to encourage ALL to participate and NOT create an "elite" group that beats the other hands down. I understand that BOINC is not about points but about science. But then, why give points at all if this is not that important?
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MarkJ Volunteer moderator Volunteer tester Send message Joined: 24 Dec 08 Posts: 738 Credit: 200,909,904 RAC: 0 Level Scientific publications	Message 16398 - Posted: 18 Apr 2010 \| 11:42:37 UTC - in response to Message 16389.
	I am using a double graphic cards motherboard. One is the GT220 and the other GT240. The GT220 will not finish the long WU in less than 24 hours, so no chance for a 50% bonus. Why is BOINC sending these WU to this card then? I understand that BOINC "WAS" doing science using the spare time of your computer. Now with these rules, the message is BUY better cards otherwise you won't get as good a bonus as other participants. I understand that you need fast return of the WU in order to prepare the next ones, but why sending long WU to weaker cards? You are pushing some people aside because they don't have money to buy the top graphic cards. I tought the initial idea of BOINC was to encourage ALL to participate and NOT create an "elite" group that beats the other hands down. I understand that BOINC is not about points but about science. But then, why give points at all if this is not that important? While boinc can tell there are different cards in a machine, it tends to treat them as all the same type for work fetch purposes. If you look at your computer details on the website you'll see it as listing 2 of the same type, even though they are different. Its quite likely that its assuming 2 x GT240's and allocating the work accordingly. ____________ BOINC blog
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Betting Slip Send message Joined: 5 Jan 09 Posts: 670 Credit: 2,498,095,550 RAC: 0 Level Scientific publications	Message 16400 - Posted: 18 Apr 2010 \| 12:00:01 UTC - in response to Message 16398. Last modified: 18 Apr 2010 \| 12:07:41 UTC
	Its quite likely that its assuming 2 x GT240's and allocating the work accordingly. It's actually showing them as 2 of the slower GT220's It shows a long WU on his GT240 completed in 59.600 secs even though it's OCed that's still fast for a GT240 so I presume he's not using this card for display but running display on GT220. ____________ Radio Caroline, the world's most famous offshore pirate radio station. Great music since April 1964. Support Radio Caroline Team - Radio Caroline
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rjenkins Send message Joined: 4 Dec 09 Posts: 4 Credit: 5,878,553 RAC: 0 Level Scientific publications	Message 16402 - Posted: 18 Apr 2010 \| 12:50:42 UTC - in response to Message 16400.
	To clarify things.... BOINC manager does show cards differently. It shows one as being a GT220 and the other as a GT240 with the GT240 about double the Gflops of the GT220, which is where it should be, looking at the card performance list posted in another post in this forum. By the way, I am using the GT240 for my display. I run HD movies from my computer and I thought of having one card crunching all the time and the other one crunching when I wasn't watching a movie. After doing some testing, I found that the GT240 can handle a full HD movie (using the hardware support - PureHD) and still run GPUGrid in the background. So no crunching time wasted!!! I am running 64 bits linux. The GT240 is a bit overclocked (about 12~15%) and so was the GT220, but that one is back to its normal freq.
	ID: 16402 \| Rating: 0 \| rate: / Reply Quote

Message boards : Number crunching : Long WU for weaker cards, why?

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