Intel GPU erroring.
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Kiska
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Message 19491 - Posted: 18 May 2014, 9:34:14 UTC
Last modified: 18 May 2014, 9:34:32 UTC

Hi there:

This computer on my account: http://boinc.thesonntags.com/collatz/show_host_detail.php?hostid=130309
Is erroring every single workunit that is using an intel gpu. And in stderr its throwing a long debug log. Please help. The specs of the computer is in the details but here they are:
Intel Core i5 3337U @1.8Ghz
Nvidia GT740M
BOINC 7.0.64
Any other important spec?

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Message 19503 - Posted: 19 May 2014, 23:31:20 UTC - in response to Message 19491.

Hi there:

This computer on my account: http://boinc.thesonntags.com/collatz/show_host_detail.php?hostid=130309
Is erroring every single workunit that is using an intel gpu. And in stderr its throwing a long debug log. Please help. The specs of the computer is in the details but here they are:
Intel Core i5 3337U @1.8Ghz
Nvidia GT740M
BOINC 7.0.64
Any other important spec?


Not sure. BOINC is reporting that your Intel GPU has OpenCL 1.01 (a.k.a OpenCL 1.1) whereas the current Intel driver supports OpenCL 1.2 which BOINC would report as 1.02 I believe. It is available at:

https://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Graphics&ProductLine=Desktop+graphics+drivers&ProductProduct=3rd+Generation+Intel%C2%AE+Core%E2%84%A2+Processors+with+Intel%C2%AE+HD+Graphics+4000&ProdId=3712&LineId=1100&FamilyId=39

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Message 19508 - Posted: 20 May 2014, 10:21:10 UTC - in response to Message 19503.

I have no clue as I updated it a while ago. But I will try updating it again. Would 7.0.64 be the cause of the malfunction in reporting?

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Message 19512 - Posted: 20 May 2014, 12:45:52 UTC - in response to Message 19508.

I have no clue as I updated it a while ago. But I will try updating it again. Would 7.0.64 be the cause of the malfunction in reporting?


You need 7.2.0 or later for Intel CPU support. Maybe it is required for Intel OpenCL as well, but since the WU started and the log shows that it got all the way up to compiling the OpenCL kernel, my guess it is more driver related.

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Message 19514 - Posted: 20 May 2014, 13:38:35 UTC - in response to Message 19512.

Ok updating to 7.2.42 fixed it. And its now showing OCL 1.2. So if you disabled work to my computer can you reenable?

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Message 19817 - Posted: 3 Sep 2014, 2:34:47 UTC
Last modified: 3 Sep 2014, 2:45:45 UTC

I'm having the same problem. HostID is 134916.

Can anyone identify why I'm having computation errors? Thanks in advance.

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Message 19837 - Posted: 8 Sep 2014, 13:40:56 UTC - in response to Message 19817.

I'm having the same problem. HostID is 134916.

Can anyone identify why I'm having computation errors? Thanks in advance.


You need to run the OpenCL app on that machine. It is currently downloading the ATI app which requires CAL and your GPU is know to return invalid results when running CAL because AMD changed the instruction set with the HD 7xxx and later GPUs.

Are you using an app_info.xml file? Or an app_config.xml file?

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Message 19839 - Posted: 9 Sep 2014, 1:59:29 UTC - in response to Message 19837.

Sorry for being so naive, but

1. I don't know how to install/run the OpenCL app,

2. I don't think I'm using either an app_info.xml or a app_config.xml file. Where would I look for these? THey're not in the BOINC directory in Program Files.

If you can point me to where I can find answers to these questions, I'll help myself.

Thanks in advance for your help.

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Message 19862 - Posted: 20 Sep 2014, 13:25:49 UTC - in response to Message 19839.

Any help to be had, or is this too basic?

Thanks in advance for any assistance.

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Message 19866 - Posted: 21 Sep 2014, 11:30:09 UTC - in response to Message 19862.

Any help to be had, or is this too basic?

Thanks in advance for any assistance.


The app files are hand made by each user to tweak Boinc to work their way, they are not a part of Boinc as downloaded. MOST people do not need them which is why they aren't in there now.

As for the opencl stuff I think it is in the driver, but you seem to have it figured out already as when I look at your pc with a an AMD gpu I see this:

21 Sep 2014, 2:29:53 UTC Completed and validated 36,609.09 36,609.09 969.68 Mini Collatz Conjecture v6.04 (opencl_intel_cpu)

AND you have a long list of them that are doing just fine.

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Message 19879 - Posted: 24 Sep 2014, 13:20:44 UTC - in response to Message 19839.

Sorry for being so naive, but

1. I don't know how to install/run the OpenCL app,

2. I don't think I'm using either an app_info.xml or a app_config.xml file. Where would I look for these? THey're not in the BOINC directory in Program Files.

If you can point me to where I can find answers to these questions, I'll help myself.

Thanks in advance for your help.


It can also be done via the project preferences.

Go to the Collatz Conjecture project web site.
Go to My Account
Select Collatz Conjecture Preferences
Under the Primary (default) Preferences, click the "Edit Collatz Conjecture preferences" link
Make sure that "Brook+/CAL for AMD GPUs (ati14)" is NOT checked.
Make sure that "OpenCL for AMD GPUs (opencl_amd_gpu)" IS checked.
Click the "Update Preferences" button.

If running Linux, OpenCL support may need to be installed separately from the video driver as the Linux distros often include only the bare minimum video driver files.


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