I joined CP on Sept 1 and started my first run on my Windows XP 866MHz laptop. This worked well, so I started another run on my Windows XP 1300MHz Celeron on Sept 2 (computes a bit slower than the laptop). Everything is running great, but I\'ll be done sometime around Thanksgiving (USA Holiday, 25 Nov) and maybe not until Christmas (sigh). I trickle every other day or so.

It\'s clear to me that I am computationally challenged compared to the other participants. I also run SETI (since 1999) and Predictor so nothing completes as quickly as a lot of the crunchers.

I\'ll keep at it, but do I have company in the dregs-of-computing-basement?

Purple Rabbit

PS: I was really \"insulted\" when I found I couldn\'t run CP on my 486 :-) It did a BOINC SETI WU in 12 days, so I figure 5 years wouldn\'t be tooooo bad for CP.

I do CPDN on a 700 MHz Pentium III that runs during the office hours. Yes, that is below the "technical requirements", but it will finish in time...

With THANKS to Carl, I can now run CPDN on my windows 98 1ghz AMD Duron machine.
I currently have 9:35 minutes of processing time on the current with only 1575 left to go. Of course being attached to eight projects with 5 of the eight giving work, it only gets an hour out of every five.

I ran CPDN on a 700 MHz Athlon for some time until I upgraded the machine due to a motherboard failure). The T-Bird 700 will be put into use again in the near future but it'll probably get so little uptime that it won't make sense to run CPDN on it.

My sorry set of computers is finally reaching their first CPDN milestone. I am getting toward the end of my first WU on both of them. It's been 4 months. I'm getting excited and worried. The laptop overheats and crashes (sigh), but so far so good. I haven't lost very much. I back it up every so often. So far I haven't needed it. I'm hoping it will complete successfully.

The laptop ought to finish on 17 Dec. The Celeron will finish after the first of the year. Both will be shutdown for Christmas. I'm going away. Both started the first of September.

A question: Am I useful? Am I taking too long to return a result? I know the computation deadline is 1 year, but I wonder how soon the results are needed to meaningfully add to the scientific database (papers, raw data, whatever). I saw the notes on the THC calculations. They are still available (on classic), but no longer relevant. I'm I in the same boat?

there seems to be a lag between results getting finishedjj and scientists using them. I imagine the most use will be in 2-10 years as the data is made available via the "grid" and it will be a huge resource to climate researchers around the world. So a model taking 4 months is no big deal. In fact, on the fastest machines, I think the next iteration of CPDN experiments (i.e. sulphur ycle, coupled model) will take 4 months!

Thanks Carl

I was keying off of a thread on one of the boards about the Classic THC that said (sort of)--"We have all the data we need for our paper. You can download more data and run them, but we don't care." I was just a bit curious if I was in the same boat.

If being a slow plodder is useful, I'll stay around. Geez, I've been here for 4 months. I'll keep crunching along (at my owm pace). Santa might even bring me a "real" computer.

The reference on the other board about already having enough data referred only to a subsidiary experiment being done to simulate a partial shutdown of the thermo-haline cycle, and which added an extra phase to the standard experiment being done in both BOINC and classic. The expectation is that the basic experiment will continue to run whilst funding lasts, supplemented by other work for those with the hardware and patience to do it.

---

Purple Rabbit said:
"My sorry set of computers is finally reaching their first CPDN milestone. I am getting toward the end of my first WU on both of them. It's been 4 months. I'm getting excited and worried. The laptop overheats and crashes (sigh), but so far so good. I haven't lost very much. I back it up every so often. So far I haven't needed it. I'm hoping it will complete successfully"

I run Seti and CPDN on my Mac Powerbook 24/7 but have a little trick that seems to help prevent overheating. I place two wooden pencils on the desk and set the laptop on top of them when I don't need to carry it around. My laptop is my only work computer, and it has the external keyboard, mouse and monitor. The air gap underneath the laptop seems to help the air circulation and keep the laptop cooler. When I have to operate it resting flat on a table for a while, the bottom of the laptop and the table both get quite hot.

BTW, I started on September 2, and am halfway through phase 2 of my first WU. I complete a trickle about every 2.5 days.

C

---

<img src="http://teamstats.macnn.com/multisig/sigs/UID=c/sig.php"></a>
<br><a href="http://team.macnn.com">Join Team MacNN</a>