IRC logs of #boinc for Wednesday, 2009-05-27

00:00 <Tank_Master> 5/26/2009 9:00:24 PM|Hydrogen@Home|Message from server: Server error: feeder not running

00:00 <Tank_Master> jacky left to soon...

00:06 <Tank_Master> brb

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00:36 <Tank_Master> wow, 12 passes to defrag the HD after installing .net 4

00:36 <Tank_Master> and it just finished to

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02:54 <efc> 8 core Nehalem.. I'll Buy That For a Dollar

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03:35 <CoderForLife> &wx 45140

03:35 <Romulus> CoderForLife: Temperature: 67.1F / 19.5C | Humidity: 91% | Pressure: 29.51in / 999.2hPa (Falling) | Conditions: Clear | Wind Direction: WSW | Wind Speed: 0.0mph / 0.0km/h ; Overnight - Mostly cloudy with a slight chance of showers. Lows in the mid 60s. South winds around 5 mph. Chance of rain 20 percent.; Wednesday - Numerous showers and thunderstorms...mainly in the afternoon. Humid with highs (1 more message)

03:36 <CoderForLife> &more

03:36 <Romulus> CoderForLife: around 80. South winds 5 to 10 mph. Chance of rain 70 percent.; Wednesday Night - Mostly cloudy. Numerous showers and thunderstorms. Muggy with lows in the mid 60s. Southwest winds 5 to 10 mph. Chance of rain 60 percent.;

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03:50 <efc> moo cfl

03:55 <CoderForLife> moo efc

03:56 <CoderForLife> bbiab

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04:09 <efc> &wx 31088

04:09 <Romulus> efc: Temperature: 68F / 20C | Humidity: 100% | Pressure: 29.88in / 1012hPa (Steady) | Conditions: Overcast | Wind Direction: SE | Wind Speed: 4mph / 6km/h ; Today - Showers and thunderstorms likely. Highs in the lower 80s. West winds 5 to 15 mph. Chance of rain 70 percent.; Tonight - Mostly cloudy with a chance of showers and thunderstorms in the evening...then a slight chance of showers and (1 more message)

04:09 <efc> &more

04:09 <Romulus> efc: thunderstorms after midnight. Lows in the mid 60s. Light and variable winds. Chance of rain 30 percent.; Thursday - Chance of showers and thunderstorms in the morning... then showers and thunderstorms likely in the afternoon. Highs in the mid 80s. West winds 5 to 15 mph. Chance of rain 60 percent.;

04:19 <FreeLarry58> well wifes new vista machine in house (i7920 multimedia)

04:19 <FreeLarry58> trying to set up now

04:31 <CoderForLife> rotsa ruck

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04:33 <efc> Ronery.. I'm so ronery

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04:47 <FreeLarry58> ruley

04:48 <FreeLarry58> waiting on dl's for updates then can start installing last of drivers such as for webcam

04:48 <FreeLarry58> then try to figure out the blasted wintv card operation

04:49 <FreeLarry58> then finally start finding and miving the wifes must save files from old machi e

04:53 <FreeLarry58> and last butt  certainly not least - get boinc started on it

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06:38 <hawmps> 'lo

06:38 <hawmps> &wx 12020

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06:38 <Romulus> hawmps: Temperature: 46.5F / 8.1C | Humidity: 94% | Pressure: 29.88in / 1011.7hPa (Falling) | Conditions: Rain | Wind Direction: South | Wind Speed: 4.0mph / 6.4km/h ; Today - Rain likely. Drizzle likely this afternoon. Highs in the lower 60s. Southeast winds around 5 mph. Chance of rain 70 percent.; Tonight - Rain and drizzle likely. Lows in the mid 50s. Southeast winds around 5 mph. Chance of (1 more message)

06:38 <hawmps> &more

06:38 <Romulus> hawmps: rain 70 percent.; Thursday - Rain and drizzle likely in the morning...then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 60s. Southeast winds 5 to 10 mph. Chance of rain 70 percent.;

06:38 <hawmps> soggy

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12:11 <MTughan> 'lo Rom

12:12 <RomW> Howdy

12:12 <MTughan> How's 6.6 going?

12:17 <RomW> Unless some new issue crops up, it is done...

12:18 <RomW> Working on 6.8, with a projected turn around time of end of next month

12:19 <MTughan> How's ATI support coming along?

12:20 <RomW> Right now, it is on-hold...  ATI sent us a faulty card...  Or at least the SDK wouldn't install on the machine

12:20 <MTughan> Ah.

12:20 <RomW> We are waiting on a replacement

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12:32 <hawmps> 'lo Rom

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12:35 <RomW> 'lo

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13:02 <Tank_Master> howdy Nickuwo

13:02 <Tank_Master> hiyas mweltin

13:02 <Nickuwo> Hey Tank

13:02 <Nickuwo> how are things

13:02 <Tank_Master> great

13:03 <Tank_Master> just ordered the parts for my i7 comp

13:03 <Nickuwo> good

13:03 <Tank_Master> though they didnt have the dvd RW avalible, its on backorder

13:04 <Nickuwo> ahh bummer

13:04 <Tank_Master> ehh, I have a spare DVD reader

13:04 <Nickuwo> what kinda vid card u gettin?

13:04 <Tank_Master> so ill used that for the time being

13:04 <Tank_Master> geforce 250

13:04 <Nickuwo> right on

13:04 <Nickuwo> nice

13:05 <Tank_Master> the 1GB version

13:06 <Tank_Master> i1 920, ASUS P6T mobo, 6GB ram, 2 300GB raptors, 120mm fan on the heatsink, 700w PS...

13:06 <Tank_Master> i7*

13:07 <Nickuwo> how much is that settin ya back?

13:07 <Tank_Master> the raptors were on sell for $200 each...

13:07 <Tank_Master> the mobo/CPU was about $525

13:07 <Tank_Master> and the rest is about $435

13:08 <Tank_Master> (reusing my case, all other parts are new)

13:08 <Nickuwo> not bad

13:08 <Tank_Master> the PS I got was 88% power efficent, so it costed a bit

13:08 <Tank_Master> about $175 right there

13:08 <Nickuwo> ya, ps aren't cheap

13:09 <Tank_Master> esp the highly efecent ones

13:09 <Tank_Master> but it should run a lot cooler and not consume as much at the wall

13:09 <Nickuwo> well when ya get it buy left 4 dead and lets kill zombies

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13:13 <zombie67> how rude

13:13 <Nickuwo> nice, i was aiting for that

13:13 <Tank_Master> its comming with Call of duty - World at war for free

13:13 <Nickuwo> nice

13:19 <Tank_Master> reboot time, ill brb

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13:21 <PovAddict> my mouse wheel feels like it's gonna break

13:21 <PovAddict> again

13:21 <PovAddict> I threw out a mouse because of it already

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13:23 <Nickuwo> can you designate a WU to be GPU-only or CPU-only? or should you just use a different <application> name in the wu template?

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13:27 <Nickuwo> this GPU jazz is really confusing...

13:27 <Tank_Master> :)

13:27 <Tank_Master> phun stuff

13:28 <Nickuwo> eh

13:28 <Nickuwo> :)

13:28 <MTughan> Depends on what you call fun.

13:28 <Tank_Master> p0rn

13:29 <MTughan> Or phun, as the phunny phrase goes.

13:29 <Nickuwo> hmm, nothing about GPU-only WUs in the wiki

13:31 <Tank_Master> suprised?

13:32 <Nickuwo> let down :(

13:34 <PovAddict> ...Never gonna give you up, never gonna let you down...

13:35 * MTughan groans

13:35 <Tank_Master> lol

13:36 <PovAddict>

13:36 <PovAddict> o_O

13:36 <Nickuwo> If only Rick Astley maintained the BOINC wiki

13:36 <Nickuwo> ...

13:36 <Romulus> <> (at

13:51 <RomW> Nickuwo: I think the assumtion is that if you want that configuration you assign the workunits to an app version where the only configuration for that app version is a GPU app

13:51 <RomW> configuration = app plan

13:51 <Nickuwo> ahh right on

14:01 <Nickuwo> it's all starting to make sense now...

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14:18 <FreeLarry58> dang issues with isp - got up and modem offline - wouldn't come back till i did a restart of modem via firmware connection

14:20 <FreeLarry58> seti beta wu's enhanced work fine on windows machines but have issues with linux - at least they process but don't end correctly so wassting time on my linux machines

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14:28 <yoyo[RKN]> moin moin

14:28 <yoyo[RKN]> &wx sxf

14:28 <Romulus> yoyo[RKN]: Temperature: 59°F / 15°C | Humidity: 51% | Pressure: 30.18in / 1022hPa | Conditions: Clear | Wind Direction: SW | Wind Speed: 7mph / 11km/h | Updated: 8:20 PM CEST; Chance of Rain. High:64 F.; Chance of Rain. Low:51 F.; Chance of Rain. High:62 F.; Chance of Rain. Low:48 F.; Chance of Rain. High:59 F.; Chance of Rain. Low:48 F.;

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14:40 <Nickuwo> so why cant you describe boinc as "open source"? is it b/c you can't redistribute it?

14:40 <Nickuwo> or b/c David controls the code?

14:42 <RomW> I guess it all depends on how you define Open Source, as far as licenses are concerned it is Open Source

14:44 <RomW>

14:44 <Romulus> Title: The Open Source Definition | Open Source Initiative (at

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14:48 <PovAddict> Nickuwo: who says it's not?

14:49 <Nickuwo> thought I saw someone in here mention it wasn't. also wikipedia doesn't mention it as "open source" :)

14:49 <RomW> lol, I think he is mentioning your quote Pov, about removing the 'O' in BOINC

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14:50 <PovAddict> &quotegrabs search BINC

14:50 <Romulus> PovAddict: #15: Isn't it about time we start referring to...

14:50 <Nickuwo> there does seem to be a "volunteers can freely contribute to code" stipulation that may or may not describe boinc....

14:50 <PovAddict> &quotegrabs get 15

14:50 <Romulus> PovAddict: <jasong> Isn't it about time we start referring to the program as BINC, since David Anderson seems to be making a joke of the word the O stands for? (Said by: jasong!n=jason@; grabbed by PovAddict! at 04:32 PM, March 11, 2009)

14:50 <PovAddict> well that's quite debatable

14:51 <PovAddict> as far as technicalities go, it's open source and it's free software

14:51 <Nickuwo> but anyway, I just didnt want to piss anyone off b/c im describing it that way in a paper im writing

14:51 <Nickuwo> good enough for me

14:51 <PovAddict> Nickuwo: you'll piss someone off if you say it's *not* open source

14:51 <Nickuwo> ill prly piss someone off either way

14:51 <Nickuwo> hehe

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15:09 <RomW> I think the one underlying truth about FOSS software that applies to all projects is that it is run by those with commit access in the source tree.

15:09 <MTughan> True.

15:10 <PovAddict> in distributed version control, everybody has commit access ;)

15:10 <RomW> to the source tree

15:10 <RomW> ops

15:11 <RomW> But, even then, the project leader is the only one that is concidered to have the authentic source

15:11 <PovAddict> yeah

15:11 <RomW> I.E. RedHat doesn't grab joe blows version of the Linux kernel

15:12 <RomW> They grab it from Linus

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15:18 <PovAddict> speaking about FOSS problems...

15:18 <PovAddict> X just crashed

15:18 <PovAddict> I demand my $0 back

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16:08 <PovAddict> computer was lagging

16:08 <PovAddict> turned out to be what I thought it was: Hydrogen@home

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16:20 <xcamel> lo

16:22 * CoderForLife waves

16:26 * CoderForLife leaves his desk to return to his quiet chair in the corner of the bedroom

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17:12 <CoderForLife> now, slowly, the pics of Barry at college come out

17:13 <CoderForLife>,0,4992416.photogallery?index=1

17:13 <Romulus> <> (at

17:20 <Nickuwo> what a pimp

17:25 <Tank_Master> can we say.. "pothead"?

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17:53 <xcamel> bot fit.

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17:53 <xcamel> er both, even

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18:18 <FreeLarry58> well looks likes wifes machine will do nicely - 9 items running for boinc simultaneously

18:19 <FreeLarry58> RomW when did you move to florida?

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18:22 <PovAddict> FreeLarry58: late 2006 (just checked his blog)

18:22 <xcamel> smart move

18:23 <PovAddict> where was he before?

18:24 <xcamel> CA or WA

18:25 <xcamel> iirc

18:27 <xcamel> The way this country is going, I'm going to join 'save the children' and move to Bangladesh

18:28 <FreeLarry58> around portland oregan

18:28 * FreeLarry58 is thinking of retiring to philippines

18:29 <xcamel> ore-a-gone

18:29 <FreeLarry58> lol yeah

18:30 <FreeLarry58> i see the 250 gpu is a little better than a 9800 gtx .17 cpu vs. .14 cpu

18:30 <xcamel> like Nueva Jerk

18:30 <FreeLarry58> both much better that 8400/8500 gou cards .01 cpu

18:31 <FreeLarry58> well back at wifes machine for some more updating

18:32 <FreeLarry58> sometime i will start to learn how to set up her multimedia stuff

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19:54 <CoderForLife> I'm waiting for the inevitable pic with the SDS t-shirt

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20:55 <Tank_Master> man did I score at joe's closeout or what :P

20:55 <Tank_Master> got $60 shorts for $7

20:58 <Tank_Master> and got a free used USB optical mouse

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21:03 <Tank_Master> howdy MT

21:03 <efc> moo

21:03 <Tank_Master> hiya efc

21:03 <MTughan> 'lo TM

21:27 <RomW> FreeLarry58: Over two years ago, I now live just north of West Palm Beach, FL

21:35 <FreeLarry58> good for you RomW

21:35 <FreeLarry58> was down around Orlando around 1978/9 for schooling

21:36 * PovAddict has been to Disney

21:36 <FreeLarry58> was there when it first opened -- and got locked inside the park one friday night

21:37 <FreeLarry58> and yes some of the rides are so automated at that time they continued to operate even when park closed

21:47 <Nickuwo> hmm, i need to program a function f(x) that = 1 iff x = 1, and is 0 otherwise.... without if statements...

21:48 <Nickuwo> o wait nm

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21:51 <PovAddict> return x == 1;

21:52 <Nickuwo> I find it remarkable that you seem to be able to do anything you can do with and if statement using boolean operators. thats cool

21:52 <Nickuwo> an if statement that is

21:53 <PovAddict> well, all an if statement does is execute what's inside if what's between the parenthesis is non-zero

21:54 <Nickuwo> right, just never thought of programming without them...

21:54 <PovAddict> all the comparison stuff is done by the operators

21:57 <XioNYC> &wx LGA

21:57 <Romulus> XioNYC: Temperature: 57F / 14C | Humidity: 89% | Pressure: 29.92in / 1013hPa (Steady) | Conditions: Mostly Cloudy | Wind Direction: ENE | Wind Speed: 7mph / 11km/h ; Tonight - Cloudy with widespread drizzle and scattered showers. Widespread fog. Lows in the upper 50s. East winds around 5 mph. Chance of rain 30 percent.; Thursday - Cloudy with a chance of showers with areas of drizzle. Highs in the (1 more message)

21:57 <XioNYC> &more

21:57 <Romulus> XioNYC: lower 60s. East winds 5 to 10 mph. Chance of rain 40 percent.; Thursday Night - Showers likely with possible drizzle and thunderstorms. Areas of fog. Lows around 60. East winds 5 to 10 mph. Chance of rain 60 percent.;

21:57 <Nickuwo> now if I could only get rid of for statements...

21:59 <PovAddict> o_o

22:00 <PovAddict> what are you doing?

22:00 <Nickuwo> writing a CUDA kernel

22:00 <PovAddict> to get rid of fors you need something fundamentally different

22:00 <Nickuwo> o ya?

22:00 <PovAddict> since you'd usually do all the iterations of the loop *at the same time*, in different GPU cores

22:01 <Nickuwo> hmm

22:01 <Nickuwo> not sure thats gonna fly here... lemme think

22:01 <Nickuwo> be messy

22:01 <PovAddict> otherwise you won't gain much performance from the GPU...

22:02 <Nickuwo> I think it'll be easier just to make sure all cores do the loop the same amount of times, just that some of them do nothing sometimes

22:02 <Nickuwo> ya, that should work..

22:03 <Nickuwo> this logic is getting complicated...

22:04 <PovAddict>

22:04 <Romulus> Title: Stream processing - Wikipedia, the free encyclopedia (at

22:06 <Nickuwo> all this if and for-quashing seems like something you could teach a compiler to do

22:07 <PovAddict> not really

22:07 <PovAddict> if all you do is remove all branching and looping, I doubt it's any faster than on a CPU

22:07 <Nickuwo> y

22:08 <PovAddict> because stream processors work in a different way

22:08 <PovAddict> in a CPU you have for(i=0; i<total_items; i++) { /* some code that processes array[i] */ }

22:09 <Nickuwo> ya

22:09 <PovAddict> in a GPU you make a kernel that processes a single item, then you tell the GPU to run it for every element of the array

22:09 <Nickuwo> right...

22:09 <PovAddict> and it would do hundreds of array elements at the same time

22:10 <PovAddict> if processing of one element depends on the result of the previous calculation, the algorithm is just not suited to GPUs

22:10 <Nickuwo> right, and the only reason it would crap out and do them sequentially is bc of divergence

22:11 <Nickuwo> ahh yes, i spose you cant teach a compiler about that easily

22:11 <Nickuwo> but rewriting ifs and fors seems like a different story

22:11 <Nickuwo> instead of if(x){do y}

22:12 <Nickuwo> if y is an assignment do y = y*x + y*!x

22:12 <Nickuwo> well

22:13 <Nickuwo> hopefully u get the point

22:13 <Nickuwo> mangled example :)

22:13 <XioNYC> Q: Are you repeating the same process upon every member of an array, or are you applying the same process to the set?

22:14 <Nickuwo> im repeating the same process on every member, although the member in this case is an array itself

22:16 <Nickuwo> every member takes a different amount of processing... but if I do this correctly, it should only take as long as the longest member... right?

22:16 <XioNYC> Not necessarily.

22:16 <PovAddict> gpu programming isn't easy

22:17 <Nickuwo> thats true

22:17 <Nickuwo> and if im misunderstanding something, please correct me... this stuff is interesting

22:17 <PovAddict> #cuda

22:17 <Nickuwo> im in there already, just thought you guys might know something i dont

22:18 <XioNYC> We know plenty that you don't.  It's just that what we know might isn't necessarily relevant.

22:18 <Nickuwo> okay...

22:18 <FreeLarry58> dang i was sure i save the winzip activation code i got a couple of years ago - but don't see it in the saved messages

22:19 <XioNYC> Reading between the lines somewhat, it might be more beneficial to switch languages/paradims.

22:19 <PovAddict> and you *can* use ifs in kernels, apparently

22:19 <PovAddict>

22:19 <Romulus> <> (at

22:19 <XioNYC> Perhaps a list-oriented language will allow you to more elegantly express the task?

22:20 <XioNYC> <pseudocode>

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22:20 <XioNYC> WITH {list_or_arrays} APPLY {n=n^2}

22:20 <XioNYC> </pseudocode>

22:23 <XioNYC> .o0( Maybe APL? )

22:24 <PovAddict> is there an APL compiler that targets CUDA?

22:25 <XioNYC> I'm fairly sure that I was at a linux users' group where someone mentioned APL or an APL-like lingo for GPUs...

22:26 <XioNYC> If not, start porting ;-)

22:46 <Tank_Master> phun times!

22:46 <Nickuwo> hey tank

22:46 <Tank_Master> howdy

22:47 <Tank_Master> looks like newegg still hasnt processed my order :(

22:48 <efc> They aren't quite as fast as they used to be

23:03 <efc> nothing like spandex to make you feel fat

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