mb_cmdline_win_x86_SSE_OpenCL_ATi.txt, and the AP One too


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Message boards : Number crunching : mb_cmdline_win_x86_SSE_OpenCL_ATi.txt, and the AP One too

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Sten-Arne
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Message 1351338 - Posted: 28 Mar 2013, 2:38:30 UTC

Ok folks, I'm finally ready to bite the bullet and upgrade my apps.

Here's a question though. If you use the cmdline.txt file to put the commands in, for example -instances_per_device 2, do you still have to change the <count> tag to 0.5 in your app_info.xml file?
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Message 1351339 - Posted: 28 Mar 2013, 2:41:07 UTC - in response to Message 1351338.

Yes.

Plus -instances_per_device 2 is no longer in play with the newer apps.
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Sten-Arne
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Message 1351340 - Posted: 28 Mar 2013, 2:42:39 UTC - in response to Message 1351339.

Yes.

Plus -instances_per_device 2 is no longer in play with the newer apps.


So, is 0.5 in the appinfo enough to make the app run two instances? No need at all for -instances_per_device ?
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I'm only running one computer. Using 2 cores of an old Q8200 CPU for CPU tasks, and 2 cores feeding a single Mid-range GPU, ATI HD7870.
Look at the RAC folks, and ask yourselves why it beats so many multi GPU monster computers :-)

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Message 1351403 - Posted: 28 Mar 2013, 7:29:42 UTC - in response to Message 1351340.

Yes.

Plus -instances_per_device 2 is no longer in play with the newer apps.


So, is 0.5 in the appinfo enough to make the app run two instances? No need at all for -instances_per_device ?

yes. But still supported and needed in conjuction with -cpu_lock or -gpu_lock options.
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Message 1351419 - Posted: 28 Mar 2013, 8:24:32 UTC

I still use both settings because of bug hunting.
If you dont use instances_per_device its not mentioned in stderr.txt how many instances are running.

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Message 1351423 - Posted: 28 Mar 2013, 8:39:11 UTC - in response to Message 1351419.

I still use both settings because of bug hunting.
If you dont use instances_per_device its not mentioned in stderr.txt how many instances are running.


Yeah, now that you mentioned it, I took a look in one stderr produced by the new app, and sure enough it doesn't say how many instances it was running. It did run 2 with only count 0.5 in the appinfo, but you would never know it from the stderr file.

Tested by setting -instances_per_device 2, in the cmdline file, and as you say, now it shows how many instances the app is running.

Thanks Mike, that was very good to be told. I'm sure I would have asked otherwise why I no longer can see the number of instances in the stderr file. Saved me some thinking there :-)
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I'm only running one computer. Using 2 cores of an old Q8200 CPU for CPU tasks, and 2 cores feeding a single Mid-range GPU, ATI HD7870.
Look at the RAC folks, and ask yourselves why it beats so many multi GPU monster computers :-)

Message boards : Number crunching : mb_cmdline_win_x86_SSE_OpenCL_ATi.txt, and the AP One too

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