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  My Genome got a little bit quicker 
 
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Rhort Mar 21, 2002, 07:57am EST Reply - Quote - Report Abuse
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I just chucked out my old 256Mb unbranded PC133 SDRAM and got me a half a gig of Crucial PC133 SDRAM. After I did that, my machine has slightly speeded up it's Genome crunching. Not by much, but a size 89 work unit used to take 17 minutes per sequence, and now it takes 15. Not a lot, you might think, but over the 30 sequences in a work unit, that's 30x2=60 -- that's a whole hour saved. So, during a week, I should crunch about one whole extra WU!

I wasn't expecting this, because I was under the impression that:

1. Genome@Home relied more on CPU clock speed and cache than memory
2. Genome@Home had an optimal memory requirement of 128Mb; in System Monitor, my 'ghclient' process usually show's it's using about 20Mb of ram.

Can anyone suggest why this minor speed increase occurred?


_________________________________________________________________________________
~ The manual said "Requires Windows '95 or better" ...so I installed Linux!
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DaveO Mar 21, 2002, 09:29am EST Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
Not sure Rhort, it seems to be a bit of a significant increase to just be down to memory differences such as latency. Is it the exact same gene seed as you timed before swapping the memory, or are they different but both of 'size' 89? Are you running less software than before (disabled a virus checker or other potential hog for instance)? Could also be as a result of a resource leek elsewhere too, if you still have the old memory, try performing a test under more rigid, controlled conditions than you would when normally running the machine and see if the same change is evident.


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DaveO Mar 21, 2002, 09:30am EST Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
"Resource leek", of the Welsh variety obviously... ;)


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Rhort Mar 21, 2002, 09:54am EST Reply - Quote - Report Abuse
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>> [No Subject]
It's the exact same work unit; I started this unit running about two weeks ago (uploading tomorrow morning) and I turn this machine off overnight, so I quite often have to look at it, see how far through the sequence it is, then come back in 'x' minutes to shut it down for the night (that's how come I know how long it takes with such a degree of accuracy).

This machine runs throughout the day from about 0700hrs to 1800hrs uninterrupted, with nothing other than Genome running during those hours, no virus checker even installed on that machine (no 'net cnx and no e-mail). Then, when I come home from work, I usually play games on it for no more than an hour or so (I'm on rationing at the moment, too many weekends 'lost' to Quake III) then it sits there, usually until about 2230hrs to 2300hrs, when I turn it off.

Installation of the new RAM was the first thing I did when I got home last night. I sat there and watched it finish off the last 30% or so of the sequence it was doing when I arrived, then I swapped the chip, booted it and set Genome off and went off and had my tea and watched an episode of Ally McBeal, so when I came back, it was about 1 hours later and it was literally just finishing a sequence because I saw movement on screen out of the corner of my eye as I came in. I noticed the time and worked out how long it'd taken.

_________________________________________________________________________________
~ The manual said "Requires Windows '95 or better" ...so I installed Linux!
DaveO Mar 21, 2002, 10:02am EST Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
Well it's certainly interesting, if you have the patience and motivation to find out, I'd be tempted to get a stopwatch and run a half-dozen tests with each stick of memory installed, making sure the conditions are identical each time of course (check out the sneakernet technique to be sure you're keeping the sequence as close as is possible, re-running the exact same 0-100% sequence each time).


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Rhort Mar 21, 2002, 10:09am EST Reply - Quote - Report Abuse
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Ooo, I don't know about that, DaveO... ...there's a-crunchin' to be done :-)

I'd have to take it offline for a while. Couldn't have that now, could we? Not with those easilyaddictive upstarts climbing a few points ahead of us again.

Crunch, crunch and MORE crunch! :-)

_________________________________________________________________________________
~ The manual said "Requires Windows '95 or better" ...so I installed Linux!
DaveO Mar 21, 2002, 11:05am EST Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
Too right, when did they get 2300 units ahead of us?!?


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Rhort Mar 22, 2002, 04:21am EST Reply - Quote - Report Abuse
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I'm not altogether sure; they normally have a midweek dump of around 2000 units, but for the last couple of weeks, that's been 4000, so they've started to pull back :-(

They've just done 1400 or so in the last 24hrs, so they're on the move away from us again :-( I've just done a two week dump from my Athlon, so that might gain us some ground, but we must have someone offline somewhere :-(

_________________________________________________________________________________
~ The manual said "Requires Windows '95 or better" ...so I installed Linux!
Gooner Mar 22, 2002, 11:00am EST Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
Fear not, as when I go get my 512MB of RAM next week (not to mention the other 512 I'm gonna stick in next month !) I shall be looking into joining this merry cause with my Athalon 1200 !

The world will be mine ! Sorry, OUR'S ! :-)

John

--
We'll burn that bridge when we come to it !
Rhort Mar 22, 2002, 11:28am EST Reply - Quote - Report Abuse
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>> [No Subject]
Nice one, John! That's what I like to see, a bit of team spirit :-)

_________________________________________________________________________________
~ The manual said "Requires Windows '95 or better" ...so I installed Linux!
Gooner Mar 22, 2002, 12:25pm EST Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
Dont get too carried away, once we've won I'll have you all secretly killed and claim the world for myself !

Could do with a concerted recruitment drive to get HA to the top of the old leaderboard !

--
We'll burn that bridge when we come to it !
Lee Crockett Mar 22, 2002, 01:35pm EST Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
HA does need a few more recruits for Genome. They are starting to get passed on the leader board.

_MD_ May 29, 2007, 03:17pm EDT Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
256Mb PC133 SDRAM???? does it even exists nowadays??? lol :cool:

___________________MD_____________________
http://valid.x86-secret.com/show_oc.php?id=333177
_______ Full system specs in user profile ________
May 29, 2007, 03:18pm EDT Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
Holy old-a** thread, Batman. :~

_MD_ May 29, 2007, 03:23pm EDT Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
I know... I love diggin into old stuff and watching people get excited with a release of voodoo banshee for example or adding another stick of 128mb to their system... lol

___________________MD_____________________
http://valid.x86-secret.com/show_oc.php?id=333177
_______ Full system specs in user profile ________
Dr. Peaceful May 29, 2007, 03:42pm EDT Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
I have spare 32MB PC100, anyone want one? ;) LOL.

_MD_ May 29, 2007, 03:48pm EDT Reply - Quote - Report Abuse
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>> Re: My Genome got a little bit quicker
Oh well if it came down to this, I still have a 5-inch floppy lying around among with a 100MB Seagate hard drive... isn't it fun to be a geek?! :cool:

___________________MD_____________________
http://valid.x86-secret.com/show_oc.php?id=333177
_______ Full system specs in user profile ________

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