Is ram important to Dpad?

[crispy2010]

I want to put togather a crack rack, I would like to only put 256 ram on each board. Is this gonna slow down my results?

If I only use 256ram I can afford one more cpu and mobo, what is better one more cpu and mobo or 512 ram on the others?

Do projects like Dpad perform better on xp 64, or is it better to use xp 32?

Any links on how to set a rack up would be great.

Thanx for the help!

 

[RaySun2Be]

Can't answer the DPAD RAM question, but I think most projects do fine on 256M Ram, especially for dedicated crunchers. I think if you opt for the big work units in F@H that they could use more RAM, not for sure though.

As far as a crack rack, here's a good place to start: Crack Racks and Crunching Farms

 

[JWMiddleton]

I am tagging on to this msg as I have a 1.4 Ghz box that worked great for SETI I, but it only has 128 MB of RAM. Is there a project that it will work on?

R@H claims to need 512 MB, so I have not fired up the box since Dec.

 

[Freewolf]

There are folks running R@H on 128megs.

 

[Zbox]

dpad will do fine on 256 megs of ram, just be sure to restart the thing every week or so as there are known memory leaks. crunching dpad on x64 was also slower for me, so I reverted back to xp 32

edit/update:

I just sampled my dpad machines, and several of them with just over 15 days of crunching show the muon1 process taking up over 200 megs of ram. ouch

 

[soni]

I just checked my Server, which have run DPAD for the last 11 days, i uses just 30M,with the VM Size set to 36M so i dont know where that memoryleak should be.
Havent seen this leak on any machines. My home pc shows 50M for the same amount of days.

 

[JonB]

I'll echo the memory leak problem. On a 256mb mobo, it will put a heavy load on the swap file, also, so be sure to use a decent size hard drive (greater than 10GB). I had one computer crash constantly when the swap file exceeded available hard drive space. Reboot weekly and you'll be fine.

no difference with XP64. Runs great on NT 4.0, which is good because I have lots of licenses for that.

 

[Zbox]

Originally posted by: soni
I just checked my Server, which have run DPAD for the last 11 days, i uses just 30M,with the VM Size set to 36M so i dont know where that memoryleak should be.
Havent seen this leak on any machines. My home pc shows 50M for the same amount of days.

do you clean your results.dat file out periodically?

 

[crispy2010]

Lemme toss one more question into the mix. Would 1 dual core intel rig be a better investment than 3-4 754 2800+ rigs?

I already have my personal gamming rig, this would be for crunching!

 

[Coquito]

Originally posted by: crispy2010
Lemme toss one more question into the mix. Would 1 dual core intel rig be a better investment than 3-4 754 2800+ rigs?

I already have my personal gamming rig, this would be for crunching!

Power cost wise, yes.
Production, maybe. Intel runs very well on some projects, but gets crushed on others. No hyperthreading on the base dual core chips, so the sway leans towards AMD.

Winchesters are just above $100 a chip, & boards are cheap. I haven't touched any of the 64 line yet so I can't provide details. Opteron 144s were $125 new just a couple weeks ago, too bad they went up so much.

 

[soni]

No, no cleaning...

 

[networkman]

Sorry, no Dpad experience, but the Einstein@Home project(Boinc) does seem to run fine on 256meg of ram, although I prefer to have 512meg in each of my rigs, to allow for onboard video ram and other items.

 

[Assimilator1]

With client shut off earlier ,its using 40MB RAM here

Btw ,rather than Ath 64 2800s wouldn't you be better off looking at mid-hi range Semprons? (especially would be if your going to overclock)

 

[crispy2010]

Sorry guys, I am talking about 2800 semprons, I assumed all 2800+ 64 chips were sempron.

I might be getting a couple mobo and cpu combos cheap.

 

[crispy2010]

Originally posted by: Coquito

Originally posted by: crispy2010
Lemme toss one more question into the mix. Would 1 dual core intel rig be a better investment than 3-4 754 2800+ rigs?

I already have my personal gamming rig, this would be for crunching!

Power cost wise, yes.
Production, maybe. Intel runs very well on some projects, but gets crushed on others. No hyperthreading on the base dual core chips, so the sway leans towards AMD.

Winchesters are just above $100 a chip, & boards are cheap. I haven't touched any of the 64 line yet so I can't provide details. Opteron 144s were $125 new just a couple weeks ago, too bad they went up so much.

The dual core intel chips have no ht?

 

[Coquito]

Originally posted by: crispy2010

The dual core intel chips have no ht?

Just the Extreme Editions. Those cost a pretty penny.

 

[Silverthorne]

Originally posted by: soni
I just checked my Server, which have run DPAD for the last 11 days, i uses just 30M,with the VM Size set to 36M so i dont know where that memoryleak should be.
Havent seen this leak on any machines. My home pc shows 50M for the same amount of days.

Same here, I have one machine that's been running for 57 days and muon is only using 70 megs. Another that's been up for 23 days is only using 60 megs.

Originally posted by: JonB
I'll echo the memory leak problem. On a 256mb mobo, it will put a heavy load on the swap file, also, so be sure to use a decent size hard drive (greater than 10GB).

I have 10 machines that each only have 2 gb HDD's and have no problems and each machine only has 256 megs of ram.

Originally posted by: Zbox
do you clean your results.dat file out periodically?

Should it just be deleted?

 

[Zbox]

yea, all you need to do is delete it

 

[Assimilator1]

Doesn't the client use it?

What happens if you don't delete it?

 

[Zbox]

results.dat is really just a history of your results as well as imported sample results. it tends to get bloated over time which leads to the client consuming a lot more memory and taking a bit more time to parse the results.dat file.

 

[Assimilator1]

Interesting , how big can the file get?

 

[JonB]

I've seen it at 100MB before.

An alternative to deleting is to just open it with WordPad and deleting contents from the top down. The oldest results are at the top, that's why you start there.
Watch the format of the existing first line, being sure that the "new first line" is the same format.

for example, a first line will begin with:
tantalumrodr=000;tantalumrodz=595;d10l=000;d11.............................. or
#gen=0;tantalumrodz=964;tantalumrodr=250;s1l=661;s1f...................

and the last line of a "results block" will end with:
-1.908763 (127.9 Mpts) [v4.42c] {DB13CF1DCF2CAA5A3B93D937} <PhaseRotB>

It makes sense when you look at it.

 

[Silverthorne]

Can it be deleted while the client is running?

 

[Silverthorne]

Bump

 

[Zbox]

no, you should delete it only after stopping the client