PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise
1) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 35176)
Posted 3166 days ago by PilgrimProject donor
yes, my computers are in a warm environment and
even though they are dust free, have 6-8 fans each
and are air cooled with the Noctura 14 my RealTemp
runs about 75 degrees with four cores. 8 threads
pushes the temperature into the mid 80's unless
I cut back on the O/C.

I will start running 6 threads soon and find I lose only about
20% throughput versus 8 threads. The law of diminshing returns
with the HT feature.
2) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 35149)
Posted 3166 days ago by PilgrimProject donor
GPU not running:

CPU running 4 cores ---17192 seconds average
CPU % utilization:50%

==================================

GPU running:

EVGA GTX570 SC -------5722 seconds.
CPU running 4 cores ---17192 seconds average
CPU % Utilization: 57%

3) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 35140)
Posted 3167 days ago by PilgrimProject donor
p.s....the numbers in previous post are when
all four cores AND GPU are running...just to clear that up.
4) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 35139)
Posted 3167 days ago by PilgrimProject donor
The GPU always runs a unit in the same amount of time
regarless of the load on the CPU.

I am not sure what you mean about "both processors"
because I have an i7-920 but I am not using HT.

And to add the excitement, while Folding at home uses
less than 10% of a CPU core LLRCUDA uses around 60-70%
of a core.

The GPU always finishes around 5700 seconds.

The CPU's (4) are now taking over 17,000 seconds
for 4 cores/units. Of course, divide by four and it seems/is
the GPU is energy inefficient BUT I could never get
below 12000 seconds/unit running just one Core/unit
(without GPU) so it seems to my brain dead mind
that even though the GPU is a power hog it still beats
One CPU core in a race, even considering the power usage
of the GPU. What am I missing?

I think the GPU might have a better comparison on
REALLY big numbers, like 14 million digits?

Let me know what else you need.

Cheers
5) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 35118)
Posted 3167 days ago by PilgrimProject donor
Kill-A-Watt says 200 watts with idle mode.
6) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 35089)
Posted 3167 days ago by PilgrimProject donor
sorry for the delay Carlos....

i7/920 o/c'd to 3.75Ghz

running only 4 CPU's (4 threads)...290 watts 15,000 seconds/unit

running only GTX570 SC ...............360 watts 5,700 seconds/unit

running all 5 above ......................460 watts

Cheers
7) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 34603)
Posted 3179 days ago by PilgrimProject donor
o.k.

I was away for a few days so will get you the info......
8) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 34563)
Posted 3181 days ago by PilgrimProject donor
I agree.

But remember I was running the older drivers, so not
a true test.

LLRCUDA is in it's earliest forms.
Remember that about a year ago people
where saying that LLR would never run on a GPU.

We are still in the earliest code.

My Kill--A-Watt meter says 442 watts
running the GTX and 4 Cores at once.

By the way, final timing was
EVGA GTX570 SC -------5522 seconds.
CPU -----------------------10494 seconds.
CPU running 4 cores ---14792 seconds average

There should be a better result running an SoB unit
which I will try to do.

Cheers.
9) Message boards : Project Staging Area : LLRCUDA on Port 12001 (Message 34469)
Posted 3183 days ago by PilgrimProject donor
GTX570 SC (running on 266.xx drivers against instructions)

running 121*2^4207281-1 Time per iteration: 1.303ms.
currently at 40% completion

same # running on one cpu/1thread======>.2.437ms.
i7-920 @ 3.75Gz

the 570 is using about 33% of one cpu
10) Message boards : Project Staging Area : Port 9000 (Message 34051)
Posted 3197 days ago by PilgrimProject donor
up, down, up, down......


Next 10 posts
[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2019 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.59, 1.79, 1.70
Generated 12 Dec 2019 | 5:40:48 UTC