Get SIGSEGV on Astropule Tasks


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Questions and Answers : Unix/Linux : Get SIGSEGV on Astropule Tasks

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Harry
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Message 1163980 - Posted: 20 Oct 2011, 19:11:16 UTC

Every Astropulse task results in a SIGSEGV (SETI@home tasks work fine).

Here's the output on stderr:

<core_client_version>6.10.17</core_client_version> <![CDATA[ <message> process exited with code 193 (0xc1, -63) </message> <stderr_txt> In ap_gfx_main.cpp: in ap_graphics_init(): Starting client. SIGSEGV: segmentation violation Stack trace (6 frames): [0x440158] [0x2b78a687d8f0] [0x58a272] [0x43cd72] [0x2b78a68749ca] [0x2b78a6b7270d] Exiting... </stderr_txt> ]]>


Thanks for your help!

Harald.
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SylvainD
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Message 1164010 - Posted: 20 Oct 2011, 20:59:25 UTC - in response to Message 1163980.

Hello,

i have the same problem on Linux/Gentoo 3.0.6 with nvidia-drivers :
<core_client_version>6.12.33</core_client_version>
<![CDATA[
<message>
process exited with code 193 (0xc1, -63)
</message>
<stderr_txt>
In ap_gfx_main.cpp: in ap_graphics_init(): Starting client.
SIGSEGV: segmentation violation
Stack trace (64 frames):
[0x440158]
[0x7f315e4da430]
[0x58a28b]
[0x43cd72]
...

Note: boinc is boinc_client launched at boot an attached to init.

May be boinc must be compiled without CUDA?
Some body confirm?

Best Regards

Profile BilBg
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Message 1164058 - Posted: 20 Oct 2011, 22:47:49 UTC - in response to Message 1164010.
Last modified: 20 Oct 2011, 22:52:49 UTC


CUDA?? - Despite I'm not a Linux expert I will safely say that CUDA here is "double" irrelevant ;)

1. BOINC do not use CUDA, it only detects the GPU (BOINC do not compute any project tasks)

2. Talk here is about Astropulse which is CPU only


If you are talking about this line:
In ap_gfx_main.cpp: in ap_graphics_init(): Starting client.

a. This line is not output from BOINC - it is message from Astropulse app
b. ap_graphics have nothing to do with CUDA - it is just the graphics/screensaver part of the Astropulse app


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Message 1164108 - Posted: 21 Oct 2011, 3:31:41 UTC - in response to Message 1164058.

I thought SIGSEGV was a hardware issue
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SylvainD
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Message 1164465 - Posted: 22 Oct 2011, 11:18:26 UTC - in response to Message 1164108.

Hello,

SIGSEGV is not harware issue.
It is is a software defect.
The pogram try to access a wrong memory segment.

If i have understand, Astropulse can be launch only in an interactiv session boinc, to authozied it to access the screensaver.

I have change my profile to excecute only standard SETI, while this bug is not corrected for Linux daemon.

Thank's all

Best Regards
Sylvain Depuille

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Message 1164903 - Posted: 24 Oct 2011, 3:27:12 UTC - in response to Message 1164465.

I run optimized apps from the Lunatics folks. I've not had a problem with SIGSEGV. However the optimized apps also don't run the screensaver. So a simpler solution would seem to be not to use the screensaver since as we do know the screensaver does tend to slow processing down a bit
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Profile BilBg
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Message 1165056 - Posted: 24 Oct 2011, 16:36:31 UTC


You may want to see this (problems with Linux stock Astropulse app):
http://setiathome.berkeley.edu/forum_thread.php?id=65917


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Harry
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Message 1165087 - Posted: 24 Oct 2011, 18:52:43 UTC - in response to Message 1165056.

Thank you for your replies. It sounds reasonable that this issue is somehow related to the screensaver: I'm running the tasks on a headless linux virtual root server. Is it possible to look into this by someone of the development team? Meanwhile I've deactivated Astropule tasks.

Thanks and best regards,
Harald.
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Questions and Answers : Unix/Linux : Get SIGSEGV on Astropule Tasks

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