Welcome to MilkyWay@home

How to increase GPU Load at NVidia VGA card?


Advanced search

Message boards : Number crunching : How to increase GPU Load at NVidia VGA card?
Message board moderation

To post messages, you must log in.

AuthorMessage
ProfileSutaru Tsureku

Send message
Joined: 30 Apr 09
Posts: 99
Credit: 27,193,579
RAC: 59
20 million credit badge13 year member badge
Message 63695 - Posted: 10 Jun 2015, 14:44:17 UTC
Last modified: 10 Jun 2015, 14:47:19 UTC

I have a NV GT730.

I have let run:
MilkyWay@Home v1.02 (opencl_nvidia) [0.4% CPU time usage]
Milkyway@Home Separation (Modified Fit) v1.36 (opencl_nvidia_101) [2.7% CPU time usage]
... the GPU Load is just ~50% each on the GT730 with 1 app/WU.

How could I increase the GPU Load?
With the prefs?
Currently they are default:
- - - - - - - - - -
Maximum CPU % for graphics 0 ... 100 - 20

Frequency (in Hz) that should try to complete individual work chunks. Higher numbers may run slower but will provide a more responsive system. Lower may be faster but more laggy. - 60
default 60 (corresponds to 60 fps)
Period (in milliseconds) to check for scene updates - 30
Change how fast the view randomly moves around - 5
Make particles bigger or smaller - 250
Make particles bigger or smaller when using uglier particles - 40
- - - - - - - - - -
How (with which values) I should change it?


Or I should create an app_config.xml file for to let run 2 WUs/GPU?
How should look the entries?


Thanks.
ID: 63695 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Profilemikey
Avatar

Send message
Joined: 8 May 09
Posts: 2806
Credit: 463,307,697
RAC: 10,369
300 million credit badge13 year member badgeextraordinary contributions badge
Message 63701 - Posted: 11 Jun 2015, 11:33:16 UTC - in response to Message 63695.  

I have a NV GT730.

I have let run:
MilkyWay@Home v1.02 (opencl_nvidia) [0.4% CPU time usage]
Milkyway@Home Separation (Modified Fit) v1.36 (opencl_nvidia_101) [2.7% CPU time usage]
... the GPU Load is just ~50% each on the GT730 with 1 app/WU.

How could I increase the GPU Load?
With the prefs?
Currently they are default:
- - - - - - - - - -
Maximum CPU % for graphics 0 ... 100 - 20

Frequency (in Hz) that should try to complete individual work chunks. Higher numbers may run slower but will provide a more responsive system. Lower may be faster but more laggy. - 60
default 60 (corresponds to 60 fps)
Period (in milliseconds) to check for scene updates - 30
Change how fast the view randomly moves around - 5
Make particles bigger or smaller - 250
Make particles bigger or smaller when using uglier particles - 40
- - - - - - - - - -
How (with which values) I should change it?


Or I should create an app_config.xml file for to let run 2 WUs/GPU?
How should look the entries?


Thanks.


An app_config.xml file is needed to run more than one unit at a time here.
ID: 63701 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Louis

Send message
Joined: 10 May 11
Posts: 3
Credit: 31,650,783
RAC: 0
30 million credit badge11 year member badge
Message 63841 - Posted: 30 Jul 2015, 22:09:59 UTC - in response to Message 63701.  

I have a NV GT730.

I have let run:
MilkyWay@Home v1.02 (opencl_nvidia) [0.4% CPU time usage]
Milkyway@Home Separation (Modified Fit) v1.36 (opencl_nvidia_101) [2.7% CPU time usage]
... the GPU Load is just ~50% each on the GT730 with 1 app/WU.

How could I increase the GPU Load?
With the prefs?
Currently they are default:
- - - - - - - - - -
Maximum CPU % for graphics 0 ... 100 - 20

Frequency (in Hz) that should try to complete individual work chunks. Higher numbers may run slower but will provide a more responsive system. Lower may be faster but more laggy. - 60
default 60 (corresponds to 60 fps)
Period (in milliseconds) to check for scene updates - 30
Change how fast the view randomly moves around - 5
Make particles bigger or smaller - 250
Make particles bigger or smaller when using uglier particles - 40
- - - - - - - - - -
How (with which values) I should change it?


Or I should create an app_config.xml file for to let run 2 WUs/GPU?
How should look the entries?


Thanks.


An app_config.xml file is needed to run more than one unit at a time here.


Can you provide a basic app_config.xml? I am interested, I use one for Seti@home.
ID: 63841 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Profilemikey
Avatar

Send message
Joined: 8 May 09
Posts: 2806
Credit: 463,307,697
RAC: 10,369
300 million credit badge13 year member badgeextraordinary contributions badge
Message 63843 - Posted: 31 Jul 2015, 12:09:21 UTC

Here is a very old one:

<app_info>
<app>
<name>milkyway</name>
</app>
<file_info>
<name>milkyway_separation_1.02_windows_x86_64__opencl_amd_ati.exe</name>
<executable/>
</file_info>
<app_version>
<app_name>milkyway</app_name>
<version_num>102</version_num>
<flops>1.0e11</flops>
<avg_ncpus>0.05</avg_ncpus>
<max_ncpus>1</max_ncpus>
<plan_class>ati14ati</plan_class>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<cmdline>--gpu-target-frequency 10 --gpu-disable-checkpointing</cmdline>
<file_ref>
<file_name>milkyway_separation_1.02_windows_x86_64__opencl_amd_ati.exe</file_name>
<main_program/>
</file_ref>
</app_version>
</app_info>

Save the file as app_info.xml in the c:\program data\boinc directory and Boinc will find it.

The key part is this:
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>

It tells the gpu to run 2 units at once, each using 1/2 of the gpu, to run 3 units at once you would put 0.33 instead of 0.5. To run 4 units at once you would use 0.25 instead. BE CAREFUL though, too many units at once WILL cause a major slowdown of everything!!! You do NOT want 100% usage, somewhere in the high 80's to mid 90's is plenty. You want to be able to click on something and have something happen in this lifetime! AND be sure to leave a cpu core free just for the gpu to use, with all the extra processing it will NOT be faster if you don't.

Of course you will have to change all the ATI references to NVIDIA too!
ID: 63843 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Louis

Send message
Joined: 10 May 11
Posts: 3
Credit: 31,650,783
RAC: 0
30 million credit badge11 year member badge
Message 63857 - Posted: 7 Aug 2015, 19:32:30 UTC - in response to Message 63843.  

This is the one I have and it works for me.

<app_config>
<app>
<name>milkyway</name>
<gpu_versions>
<gpu_usage>0.5</gpu_usage>
<cpu_usage>0.05</cpu_usage>
</gpu_versions>
</app>
</app_config>

I set gpu usage to .33

Good luck crunching!
ID: 63857 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote

Message boards : Number crunching : How to increase GPU Load at NVidia VGA card?

©2022 Astroinformatics Group