[RC5] Proper method for importing buff-out files?
id at sonic.net
Tue Nov 17 21:32:27 EST 1998
I think the reason we are dissapointed is because on a duel ppro 200 I got 1.2
mk/s and that system is a couple years old. One would think that a new wiz bang
xeon would improve this per mhz. where in fact it looks a bit slower. The ppros
have 256k cache and the xeon has 4 times that so I would expect it to be faster,
of course I don't know how much effect that really has on rc5 performance....
btw, why were you running it a half speed?
"John \"Chris\" Wren" wrote:
> Well, I don't know exactly why you'd find the performance of a
> Xeon disappointing. The fact that it has a meg of *full speed* cache,
> as opposed to the 1/2 speed cache of a Pentium II makes for a major
> performance advantage. Every statistic available shows that a 400mhz
> seriously outperforms a 450mhz PII, in all cases except where
> continous cache faults occur (and even Windows 95 doesn't cause that).
> And with the advent of the 450mhz Xeons (Tanner), a PII 400 doesn't
> come close.
> And the numbers I gave were using 4 processors, not 2. As I
> mentioned it was running at about 50% of it's rated speed (i.e., about
> 200 mhz per processor, or a little less).
> While I'm aware of how much time the algorithm spends in
> cache, I'm sort of curious what the memory requirement of it is. In
> this particluar system, the memory subsystem is running at a pathetic
> When this system is brought full up, the numbers will be at
> least a factor of 2 better (perhaps even close to 3).
> - Chris
> On Tue, 17 Nov 1998 10:58:45 -0500, you wrote:
> >I find the performance of the Xeon somewhat disappointing. I expected it to
> >be a somewhat better. I am running a PII-350 and am getting 980K kps. What
> >is the speed of the processors? If they are running 400Mhz that it would be
> >about right. I expect you are lousing some performance due to the
> >multi-processor communications. I am also assuming that it was using 2
> >processors instead of 4.
> >You can stop processing on your laptop and copy your buffer files to a safe
> >location. Copy the buffer files from the Xeon box to your RC5 directory and
> >perform a flush. Then copy your original laptop buffers back to the RC5
> >directory and start processing where you left off.
> >-John Scott
> >kd4vhg at radio.org
> >> ----------
> >> From: jcwren at atlanta.com[SMTP:jcwren at atlanta.com]
> >> Reply To: rc5 at lists.distributed.net
> >> Sent: Tuesday, November 17, 1998 8:34 AM
> >> To: rc5 at lists.distributed.net
> >> Subject: [RC5] Proper method for importing buff-out files?
> >> I recently (last night) used a 4 way Xeon box I had access to
> >> crunch keys as a demo for some folks. Overnight it ran 336 random
> >> blocks (no network for this puppy, yet). I'd like to submit those
> >> blocks. I have a laptop that is connected to the network running the
> >> RC5 client.
> >> How do I properly go about flushing the keyblocks the other
> >> machine did without disrupting the laptop?
> >> By the way, this machine was running at about 50% it's rated
> >> speed, and was doing 2.21M KPS. Can't wait 'til it goes faster!
> >> - John "Chris" Wren, Team Anvil
> >> --
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