Just Checking

scorcer · Jan 5, 2005

Hi Guys,
I am on my first WU, does 90/400, 22% in 24 hrs sound on target for a 1Ghz PIII? Also what are the minimum requirements for a PC to do this task? I've got the bug and a few dinosaurs in the parts closet I could assemble for this task, I'm only short modems( my ATT dial-up wont let me share a connection, but I could easily swap a modem from dino to dino as needed.
THANKS!!(GO TEAM,GO TEAM,GO,GO,GO!!)

goldfish · Jan 5, 2005

Yep, that sounds about right

The point scheme is calculated for the ammount of work done in one hour by a PIII at 700Mhz. So if you do a WU in 24 hours with a PIII 700Mhz, you get 24 points. However if that same WU was run on a much faster processor, the same points would be scored but in less time And thus your rate of earning points is higher the faster the processor.

scorcer · Jan 5, 2005

cool, thanks sarge!

videoguy · Jan 9, 2005

Hello, I have been reading on the Stanford site, They currently benchmark on a P4 2.8 Ht Disabled and have been for over 1 year FYI note <<VG

at 100 PPD aprox

goldfish · Jan 9, 2005

Darn, you're right! My info is outta date!

HT and SSE2, actually
from http://folding.stanford.edu/faq.html

How do you decide how much credit a work unit is worth?

How do you determine how many points a work unit is worth? Before putting out any new work unit, we benchmark it on a dedicated 2.8GHz Pentium 4 machine with SSE2 disabled (more specifically, as reported by /proc/cpuinfo on linux: vendor_id : GenuineIntel, cpu family : 15, model : 2, model name : Intel(R) Pentium(R) 4 CPU 2.80GHz, stepping : 9, cpu MHz : 2806.438, cache size : 512 KB). This machine runs linux, so all WUs are benchmarked with the linux core.

We plug the results of this into the following formula:

points = 110 * (daysPerWU)

where daysPerWU is the number of days it took to complete the unit. This equation was chosen to match the points for previous Gromacs WUs to the previous point system. The upshot is that Tinker WUs will be worth more than before we set up the new points (i.e. before April 2004).

Please note that the very concept of a reference machine will mean that some WU benchmarking will vary from the performance on your machine. Even between P4s, there are significant differences in architectures over the years. Moreover, variations between FAH WUs can also lead to differences in benchmarking points.

Our goal is consistency within a given definition of a reference machine setup (described above), but beyond that the natural variation from machine to machine and WU to WU will never alllow any point system to perfectly reflect what you get on your machine.
Click to expand...

How do you set the deadlines for the work units?

Each work unit is benchmarked on a dedicated 2.8 GHz Pentium 4 machine with SSE2 disabled. Next, we apply this equation

timeout = 20 * (daysPerWU) + 2
deadline = max(30* (daysPerWU) + 2,10)

where daysPerWU is the number of days it took to complete the unit. The "+2" days is there to give an additional buffer for fast WUs (to allow for servers down, etc). If 30*daysPerWU is less than 10 days, we set the deadline to 10 days, as a minimum time for all projects. The timeout is the time at which the WU is resent to another client and the deadline is the last time which we will give stats credit for the WU.

Occasionally, deadlines may be set shorter or longer than the above calculation indicates, but the reason for having deadlines at all is that the sooner we get back work units, the sooner we can put the results to good use. The assignment server does take machine performance into account in making assignments, thereby allowing slower machines to receive more appropriate work units.
Click to expand...

scorcer · Jan 9, 2005

Turned in my first "assignment" this morning, took me about 5 days, this second one is 44% done in 12 hours, server gave me an easy one I guess, either way, it feels good to help. Wish I would have read more about the screen saver stuff, that cost me some time, oh well, as I've said before, live & learn

scorcer · Jan 10, 2005

I got it figured out, on to #3, go team go!

Log in or Sign up

Just Checking

scorcer ajMro keGe

goldfish Lt. Sushi.DC

scorcer ajMro keGe

videoguy Private E-2

goldfish Lt. Sushi.DC

scorcer ajMro keGe

scorcer ajMro keGe