Hi,

I am new in GPUGrid, and I started to crunch some WU a few days ago.

1. This WU ended in error.

http://www.gpugrid.net/result.php?resultid=4259296

Do you know why?
Do I have to change anything in my configuration?

2. Which is the normal load for the GPU? I have only 48% for short WUs and 65% for long ones

Best regards,
Alejandro

another one

http://www.gpugrid.net/result.php?resultid=4261811

<core_client_version>6.12.33</core_client_version>
<![CDATA[
<message>
- exit code 98 (0x62)
</message>
<stderr_txt>
# Using device 0
# There is 1 device supporting CUDA
# Device 0: "GeForce GTX 580"
# Clock rate: 1.56 GHz
# Total amount of global memory: 1576468480 bytes
# Number of multiprocessors: 16
# Number of cores: 128
SWAN: Using synchronization method 0
MDIO: cannot open file "restart.coor"
ERROR: get_Dvec() element 0 (b)
called boinc_finish

</stderr_txt>
]]>

I received the error at the end. So 11 hours running...

The long runs that I completed were without swan_sync = 0
SWAN: Using synchronization method 0


Best regards,
Alejandro

Hi Kev,

I would suggest you do a system restart, and check your system and GPU temperatures.

Also check that your system is not down-clocking your GPU (NVidia control Panel, prefer Maximum Performance, rather than Adaptive).

Are you using any GPU intensive applications other than GPUGrid?
I guess it's possible that this is related to you running other projects, but I know nothing about what you ran before these two tasks.

In both your linked tasks you did use SWAN_SYNC:
"SWAN: Using synchronization method 0"

Are you also freeing up a CPU core? If not there is no point usine SWAN_SYNC whatsoever.

48% GPU utilization seems too low, but then I am not presently running a W7 system. You should be able to get it to within 15% as good as XP, on which I see up to 98% for Fermi tasks. That said the GIANNI tasks are only around 81% with SWAN_SYNC and Free CPU cores. But you should still be able to get around 65 to 70% utilization.

One last thing, you could try to update your driver, but I would check everything else first.

I changed in NVidia Control Panel -> Manage 3D settings -> Power Management Mode. From Adaptive to prefer maximum Performance

How do I free up a CPU core?

Hi Dagorath, Kev,

Now it is working fine. thxs!!!!

NO more errors. I activated swan_sinc again , freed up a CPU core and restarted windows.

I still have the issue of 48% GPU load for ACEMD2: GPU molecular dynamics v6.15 tasks.

I found out that for very long tasks (4000000 steps) the gpu used is 70%
and the use of the gpu is reducing accordingly with the steps (45-48% for 500000 steps). So, the time per step increase for smaller WU.

I checked with other users tasks and I saw the same behaviour ( for smaller WU increase the time per step).

So that brings me to the cpu.

It seems that the cpu Intel(R) Core(TM)2 Quad CPU Q9550 is not fast enough for the gtx 580. I can see on the task manager that the task acemd2_6.15_windows_intelx86__cuda31 always uses 25% ( 4 cores without HT)

What is better for gpugrid, that I only accept long tasks (application: ACEMD for long runs ) so the gpu is used to 70% or to accept all applications?

Best regards,
Alejandro

Hi Bigtuna,

I am not interested in collecting points. I have activated all the applications.

My plan is to move to linux next year. Now I am short of time, and moving to linux, will take me 2 days. I have 2 PCs. This with windows 7 and a linux box , but I cannot put a better power supply there and intall the graphic card. I made the mistake to by it from DELL.

So I have to install linux here and windows 7 on the DELL.

Best regards,
Alejandro

What was wrong with that task?
10-KASHIF_HIVPR_cl_ba1-0-100-RND4144_0
Workunit 3028713
Created 10 Jan 2012 | 14:11:21 UTC
Sent 10 Jan 2012 | 16:32:37 UTC
Received 10 Jan 2012 | 20:48:01 UTC
Server state Over
Outcome Success
Client state Done
Exit status 0 (0x0)
Computer ID 100808
Report deadline 15 Jan 2012 | 16:32:37 UTC
Run time 11,822.64
CPU time 11,822.64
Validate state Valid
Credit 0.00
Application version ACEMD2: GPU molecular dynamics v6.14 (cuda31)
Stderr output

Windows Beta runDIG10-TONI_BADO9GG-4-5-RND0865_5 task errored out on startup. Debug info can bee seen via link.
Win XP, GTX560Ti, factory OC lovered to level, when NATHAN_CB tasks runs succesfully (900 -> 890) .