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You are here: MacNN Forums > Community > Team MacNN > I'm Dense. What's the diff between SETI@home and RC5?

I'm Dense. What's the diff between SETI@home and RC5?
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Join Date: Jan 2001
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Apr 6, 2001, 03:16 PM
 
I've got the seti@home 3.03 screensaver running, but have no real clue what RC5 is, and if I can run it on my machines. The only link I could find in the topics here is outdated.

Someone clue an old geezer in.

CV

When a true genius appears in the world you may know him by this sign, that the dunces are all in confederacy against him. -- Jonathan Swift.
     
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Apr 6, 2001, 06:38 PM
 
SETI searches for aliens, RC5 is cracking an encryption scheme.
I do both.
Put RC5 on your G4s, but leave SETI on em too.
Set RC5 to auto run at startup.

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PM 7100 - 66, 32, 700 MB
PM 6100 - 66, 40, 4.5 GB
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Join Date: Oct 1999
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Apr 6, 2001, 06:48 PM
 
Hiya Chris. Another Texican on the team would be good. Go here
http://www.distributed.net/rc5/

There's pretty detailed instructions on the thread brOck started
http://forums.macnn.com/cgi-bin/Foru...ML/000191.html
     
chris v  (op)
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Apr 6, 2001, 10:52 PM
 
I doubt I'd make a dent in the overall team stats with my two measly single processer G4's an one old 604e 150mz, but I'll check it out. It was interesting watching SETI run at work today-- Youd figure a 450mz processer would be three times as fast as a 150, if you don't take into account other aspects of the architecture, but side by side, my G4 was chewing exactly 5 X the data as my old Power Center.

At any rate, I left them both on all weekend just to see how much they could process unfettered over the next two days.

CV

When a true genius appears in the world you may know him by this sign, that the dunces are all in confederacy against him. -- Jonathan Swift.
     
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Apr 7, 2001, 09:03 AM
 
Have fun with both of em.
Just don't pass me
2 G4s running RC5 even part time will make a reasonably large dent in our rank.

------------------
G3 400, 384, 12 + 75 GB
PM 8500 - 150, 48, 1 GB
PM 7100 - 66, 32, 700 MB
PM 6100 - 66, 40, 4.5 GB
My website
Help me pay for college. Click for more info.
     
chris v  (op)
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Apr 7, 2001, 03:52 PM
 
Scott, Zac, thanks!

Couple more questions. I've got the RC5 client running, and I've sent back a couple of packets, already.

I set priority on 5. How much will this interfere with my normal work in Photoshop, etc? Also, SETI no longer appears to automatically sleep after two minutes-- is SETI waiting for processor inactivity, which the RC5 client has already nabbed? What's the best priority setting so that the two of them don't interfere too much with each other, or is that possible? Since they both seem to be designed to rake advantage of procesor inactivity, won't they nesseccarily slow each other down?

Should i let RC5 have at the time I spend staring at the screen, but not computing (reading emails, browsing) and then override it with SETI by throwing the cursor down to the bottom left whenever I get up and walk away?

Lastly, to set RC5 to autorun at startup, do I just put an alias in startup items? (I'm a chump with applescript--utterly illiterate there)

Crunching,
CV

When a true genius appears in the world you may know him by this sign, that the dunces are all in confederacy against him. -- Jonathan Swift.
     
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Apr 7, 2001, 08:40 PM
 
I've been playing with SETI and RC5 running on the same machine. I have a DP500 OC'd to 550, with a gig of RAM. When SETI runs in screensaver, something happens and RC5 loses its connection. It can't connect until I quit it and restart it(the dnetc app). If I run dnetc and S@H App, all is good. If S@H is in foreground, processor a crunches RC5 at just over 1Mkeys/sec, while b runs at almost 5 Mkeys/sec. If dnetc is in foreground, proc a goes up to about 4.2 Mkeys/sec, while proc b stays at 4.9+Mkeys/sec, and S@H slows to a veritable crawl, tho this is not reflected in S@H processor time, just "real-time" A S@H WU will take about 11-13 processor hours, but about 30 "real" hours to do.
I have S@H running, via SETI Unit Manager, on a PM8500/G3-454, so I think I'm going to drop it from the G4 and just do RC5.

As far as the priority setting, I set it to 0 whenever I'm on the Mac. Sometimes I will set it to 9 when I go to work.
Autostart - yup stick an alias in S/U Items
     
chris v  (op)
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Apr 8, 2001, 09:05 PM
 
I tinkered around some today.

If I set RC5 on priority 9, and quit everything, I can get 3.85 Mkeys/sec. Can't do anything else, though. Reminds me of trying to work on my old Centris 610.

Set on priority 0, I get around 1.8 Mkeys/sec. I doubled the RAM alottment for the client, and brought that up to 2.25, then I quadrupled it, to no effect.

Priority 5 was making things seem a little sluggish, so I settled on 2, and am consistently getting between 3.1 and 3.2 Mkeys/sec, even with the SETI screensaver running, although SETI seems to be suffering.

RC5 sends and recieves just fine with the SETI screensaver running-- it's buffering 8 packets, and is sending and recieving +/- once an hour, I'd say.

Hopefully, my numbers will kick in to the team totals tonight.

CV

When a true genius appears in the world you may know him by this sign, that the dunces are all in confederacy against him. -- Jonathan Swift.
     
   
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