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CUDA MB V12b for multi-GPU multicore hosts.

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Pappa:

--- Quote from: Raistmer on 25 Dec 2009, 07:27:54 pm ---Yes, I did such test. But I have only 1 GPU installed now - no targed hardware for this build.
And I still don't understand how you manage to process VLARs with it... Could you list some completed VLAR results?

--- End quote ---

the 8400 had a VLAR in progress at the time I installed it did a Fallback to CPU. So as it is running the nokill option it is doing VLARS

http://setiathome.berkeley.edu/results.php?hostid=2435134
and this task
http://setiathome.berkeley.edu/result.php?resultid=1458893819

So over the course of the week it has not did a lot of WU's as only Seti Cuda is running on the GPU and NFS on the CPU's. It is also susecptable to errors.

Raistmer:
Hm, do you talk about V12b modification or V12 one?
What build did VLARs ? This thread mainly about V12b build for multi-GPU hosts.

[BTW,
"Device 1 : Device Emulation (CPU)
"
It's already not GPU but CPU. Then app did fallback from CPU GPU-emulation to plain CPU code  :o  :o   :o Why no GPU found ?
]

EDIT: ah, I see now. That task was resumed by V12b version...
After app init: total GPU memory 0    free GPU memory 0
VLAR WU (AR: 0.008794 )detected, but task partially done already, continuing computations

Pappa:
In the next day or so I am going to setup to do a test on the 8400. I will setup a MB Bench with a couple of the same WU's and launch (both cores active). The a Cuda Bench with a single AR copied about 6 times to run Stock, v12 and v12b...

The numbers should be identical. What I expect to show up is changing times due to hardware conflicts/contention. This is what would affect the low end cards mostly. The end result should show a truer picture of speed improvement.

glennaxl:
GTX295+GTX260-216/i7 920

MB_6.08_mod_CUDA_V12b.exe
====================
WU : testWU-1.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 26 seconds
MB_6.08_mod_CUDA_V12b.exe : 25 seconds
Speedup: 3.85%, Ratio: 1.04 x

WU : testWU-2.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 30 seconds
MB_6.08_mod_CUDA_V12b.exe : 32 seconds
Speedup: -6.67%, Ratio: 0.94 x

WU : testWU-3.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 32 seconds
MB_6.08_mod_CUDA_V12b.exe : 36 seconds
Speedup: -12.50%, Ratio: 0.89 x

WU : testWU-4.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 17 seconds
MB_6.08_mod_CUDA_V12b.exe : 17 seconds
Speedup: 0.00%, Ratio: 1.00 x

WU : testWU-5.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 31 seconds
MB_6.08_mod_CUDA_V12b.exe : 32 seconds
Speedup: -3.23%, Ratio: 0.97 x

WU : testWU-6.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 1 seconds
MB_6.08_mod_CUDA_V12b.exe : 1 seconds
Speedup: 0.00%, Ratio: 1.00 x

WU : testWU-7.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 19 seconds
MB_6.08_mod_CUDA_V12b.exe : 20 seconds
Speedup: -5.26%, Ratio: 0.95 x

MB_6.08_mod_CUDA_V12b_x4.exe
======================
WU : testWU-1.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 25 seconds
MB_6.08_mod_CUDA_V12b_x4.exe : 25 seconds
Speedup: 0.00%, Ratio: 1.00 x

WU : testWU-2.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 30 seconds
MB_6.08_mod_CUDA_V12b_x4.exe : 31 seconds
Speedup: -3.33%, Ratio: 0.97 x

WU : testWU-3.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 32 seconds
MB_6.08_mod_CUDA_V12b_x4.exe : 36 seconds
Speedup: -12.50%, Ratio: 0.89 x

WU : testWU-4.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 18 seconds
MB_6.08_mod_CUDA_V12b_x4.exe : 17 seconds
Speedup: 5.56%, Ratio: 1.06 x

WU : testWU-5.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 31 seconds
MB_6.08_mod_CUDA_V12b_x4.exe : 32 seconds
Speedup: -3.23%, Ratio: 0.97 x

WU : testWU-6.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 1 seconds
MB_6.08_mod_CUDA_V12b_x4.exe : 1 seconds
Speedup: 0.00%, Ratio: 1.00 x

WU : testWU-7.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 19 seconds
MB_6.08_mod_CUDA_V12b_x4.exe : 20 seconds
Speedup: -5.26%, Ratio: 0.95 x

glennaxl:
Dual GTX260-216/i7 920

MB_6.08_mod_CUDA_V12b.exe
====================
WU : testWU-1.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 23 seconds
MB_6.08_mod_CUDA_V12b.exe : 23 seconds
Speedup: 0.00%, Ratio: 1.00 x

WU : testWU-2.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 28 seconds
MB_6.08_mod_CUDA_V12b.exe : 28 seconds
Speedup: 0.00%, Ratio: 1.00 x

WU : testWU-3.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 30 seconds
MB_6.08_mod_CUDA_V12b.exe : 33 seconds
Speedup: -10.00%, Ratio: 0.91 x

WU : testWU-4.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 16 seconds
MB_6.08_mod_CUDA_V12b.exe : 16 seconds
Speedup: 0.00%, Ratio: 1.00 x

WU : testWU-5.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 28 seconds
MB_6.08_mod_CUDA_V12b.exe : 28 seconds
Speedup: 0.00%, Ratio: 1.00 x

WU : testWU-6.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 1 seconds
MB_6.08_mod_CUDA_V12b.exe : 0 seconds
Speedup: 100.00%, Ratio: 1.#J x

WU : testWU-7.wu
MB_6.08_CUDA_V12_VLARKill_FPLim2048.exe : 18 seconds
MB_6.08_mod_CUDA_V12b.exe : 18 seconds
Speedup: 0.00%, Ratio: 1.00 x

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