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Posts by AMueller91

1) Message boards : News : Users Auto-Aborting Work Units (Message 60036)
Posted 27 Sep 2013 by Profile AMueller91
Post:
Hey AMueller91,
glad you figured it out. I have not seen any benefit beyond 4 tasks per gpu. Key is no down time and the chances that 4 tasks finish at the same time is minimal.

If they are running in tandem, just pause one then start it back up. All you need for cpus is set logical cores = physical cores plus 1.

Exactly :)

After it starts working fine with 6 tasks per GPU, i tested the maximum number of WUs to my Titan Cards. So without Double Precision, they can only handle a maximum of 3 WUs per Card to get a GPU load of 99%. But with Double Precision enabled, i get a maximum of 8 WUs per Card (16 GPU Tasks simultaneously) at a 99% GPU load. I let it run for around 5 minutes, finished nearby 30 tasks but also the card heat up to 90°C.

So im fine with 6 WUs/card. It runs stable, without errors and temps around 85°C.
2) Message boards : News : Users Auto-Aborting Work Units (Message 60026)
Posted 27 Sep 2013 by Profile AMueller91
Post:
ok... after searching for a solution since 5 hours, it works now.

After setting the value <max_concurrent>4</max_concurrent> to <max_concurrent>14</max_concurrent> inside the app_config.xml and <ncpus>4</ncpus> to <ncpus>14</ncpus> inside the cc_config.xml it works fine.
4 GPU WUs (2 WUs/GPU @ 0.25 CPU/GPU-WU) and 10 CPU WUs are active. Hope it will hold longer than 10 minutes :D

Edit: With optimized app_config and cc_config, i can run 23 WUs at the same time. 12 on GPU (6 per card with Double Precision enabled) and 11 WUs on CPU. Each GPU WU take around 2 minutes to complete, CPU WUs run between 1-2 Hours.
<app_config>
   <app>
      <name>milkyway</name>
      <max_concurrent>23</max_concurrent>
      <gpu_versions>
          <gpu_usage>.15</gpu_usage>
          <cpu_usage>0.05</cpu_usage>
      </gpu_versions>
   </app>
</app_config>


<cc_config>
<log_flags>
</log_flags>
<options>
<ncpus>23</ncpus> 
<max_file_xfers>30</max_file_xfers>
<max_file_xfers_per_project>30</max_file_xfers_per_project>
<http_transfer_timeout>30</http_transfer_timeout>
<rec_half_life_days>10</rec_half_life_days>
<report_results_immediately>0</report_results_immediately>
</options>
</cc_config>
3) Message boards : News : Users Auto-Aborting Work Units (Message 60025)
Posted 27 Sep 2013 by Profile AMueller91
Post:
Yes, that's right. Good point.

Here's my app_config

<app_config>
<app>
<name>milkyway_nbody</name>
<max_concurrent>0</max_concurrent>
<gpu_versions>
<gpu_usage>.1</gpu_usage>
<cpu_usage>1</cpu_usage>
</gpu_versions>
</app>
<app>
<name>milkyway</name>
<max_concurrent>8</max_concurrent>
<gpu_versions>
<gpu_usage>.25</gpu_usage>
<cpu_usage>.11</cpu_usage>
</gpu_versions>
</app>
<app>
<name>milkyway_separation__modified_fit</name>
<max_concurrent>8</max_concurrent>
<gpu_versions>
<gpu_usage>.25</gpu_usage>
<cpu_usage>.12</cpu_usage>
</gpu_versions>
</app>
</app_config>

and here's my cc_config

<cc_config>
<log_flags>
</log_flags>
<options>
<ncpus>4</ncpus>
<max_file_xfers>30</max_file_xfers>
<max_file_xfers_per_project>30</max_file_xfers_per_project>
<http_transfer_timeout>30</http_transfer_timeout>
<rec_half_life_days>10</rec_half_life_days>
<report_results_immediately>0</report_results_immediately>
</options>
</cc_config>

so one gpu is running 4 WU at a time. Then no down time. Particular machine has two cpu cores but I have 4 virtual cores. Again, no cpu down time. 4 cpu wu and 4 gpu wu which is about 10% more work than letting them cycle down. Also have constant fan speeds and more stable temperatures.

Holler if any wants my 2 gpu xml files.


Hey, this is exactly what i want, but it dosent work. I got a i7-3930k CPU with 6 Cores and 12 Threads & two GTX Titan.
If i let run MW@Home without any app_configs or something, all 12 Threads and both GPUs are working.
If i add the app_config, only GPUs are working correctly (2 WUs per GPU), but the CPU does nothing... BUT if i drag n drop the app_config.xml file out of my MW@home folder and restart BOINC, all works fine (12 CPU WUs and 2 GPU WUs on each card) for around 10min! After this 10 minutes, the GPUs automatically stops the additional WUs and keeps processing one WU on each card.
How can i make all or even 8 to 10 threads working while using the multiple WU App_config?

Sorry for my bad english, im from Fondue-Switzerland :)
PS: My app_config.xml
<app_config>
   <app>
      <name>milkyway</name>
      <max_concurrent>4</max_concurrent>
      <gpu_versions>
          <gpu_usage>.500</gpu_usage>
          <cpu_usage>0.25</cpu_usage>
      </gpu_versions>
   </app>
</app_config>
4) Message boards : MilkyWay@home Science : What in the world does this project do? (Message 60002)
Posted 26 Sep 2013 by Profile AMueller91
Post:
Yeah, if you could make some kind of graphics for this Project, that would be great.




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