Welcome to MilkyWay@home

Intermittent Computation Errors


Advanced search

Message boards : Number crunching : Intermittent Computation Errors
Message board moderation

To post messages, you must log in.

AuthorMessage
Carlos Perez

Send message
Joined: 24 Sep 11
Posts: 2
Credit: 55,682
RAC: 0
10 thousand credit badge10 year member badge
Message 64448 - Posted: 5 Apr 2016, 0:42:33 UTC
Last modified: 5 Apr 2016, 0:47:24 UTC

I apologize if I am posting this in the wrong place...

Been having this issue for some months (through many iterations of my operating system, BOINC and CUDA driver versions)and I am unsure of how to resolve it. I see other posts but they also seem to lack a concrete solution...

There will be runs where most task end in "Computation error" and other times when everything will run just fine.

I am using a mid 2012 15" MacBook Pro 2.6 GHz Intel Core i7 running OS X 10.11.4 16 GB RAM and a 1 TB hard drive with tons of free space. Graphics card: NVIDIA GeForce GT 650M with 1 GB VRAM.

BOINC 7.6.22 wxWidgets version 3.0.0 and CUDA Driver version 7.5.26

I have uninstalled and reinstalled BOINC and the CUDA drivers, but that does not eliminate the errors.

Errors are intermittent so I am not sure what would be different each time I run BOINC. When I do run it, it is the only program running as I quit all other applications.

At a loss of how to solve, so any suggestions would be welcome.

Thanks!

C. Perez

ID: 64448 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Profilemikey
Avatar

Send message
Joined: 8 May 09
Posts: 2884
Credit: 471,213,344
RAC: 261,055
300 million credit badge13 year member badgeextraordinary contributions badge
Message 64451 - Posted: 5 Apr 2016, 11:31:07 UTC - in response to Message 64448.  

I apologize if I am posting this in the wrong place...

Been having this issue for some months (through many iterations of my operating system, BOINC and CUDA driver versions)and I am unsure of how to resolve it. I see other posts but they also seem to lack a concrete solution...

There will be runs where most task end in "Computation error" and other times when everything will run just fine.

I am using a mid 2012 15" MacBook Pro 2.6 GHz Intel Core i7 running OS X 10.11.4 16 GB RAM and a 1 TB hard drive with tons of free space. Graphics card: NVIDIA GeForce GT 650M with 1 GB VRAM.

BOINC 7.6.22 wxWidgets version 3.0.0 and CUDA Driver version 7.5.26

I have uninstalled and reinstalled BOINC and the CUDA drivers, but that does not eliminate the errors.

Errors are intermittent so I am not sure what would be different each time I run BOINC. When I do run it, it is the only program running as I quit all other applications.

At a loss of how to solve, so any suggestions would be welcome.

Thanks!

C. Perez


When I look at your failed tasks I see this:

Using device 0 on platform 0
Found 2 CL devices
Device 'HD Graphics 4000' (Intel:0x1024400) (CL_DEVICE_TYPE_GPU)
Device doesn't support double precision

I think you need to exclude your Intel cpu/gpu processor from MilkyWay and things will work just fine.

Here is a sample cc_config.xml file with the exclude lines in it:

<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
<exclude_gpu>
<url>http://milkyway.cs.rpi.edu/milkyway/</url>
<device_num>0</device_num>
</exclude_gpu>
</options>
</cc_config>

In the stuff I pasted above it says your Intel gpu is device zero so I excluded device zero, your Intel gpu, from crunching at MilkyWay. Put the file in your main Boinc folder and you should be good to go after stopping and restarting Boinc. If you already have a cc_config.xml file you are using just cut and paste the exclude section above and paste it into your existing file, and then stop and restart Boinc.
ID: 64451 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Carlos Perez

Send message
Joined: 24 Sep 11
Posts: 2
Credit: 55,682
RAC: 0
10 thousand credit badge10 year member badge
Message 64452 - Posted: 5 Apr 2016, 16:14:41 UTC - in response to Message 64451.  

Fantastic! Thank you for that little file..

Where does that go on a Mac?

From my digging around, most likely place would be Hard Drive > Library > Application Support > BOINC Data

Is that correct?

Thank you!

C. Perez
ID: 64452 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Profilemikey
Avatar

Send message
Joined: 8 May 09
Posts: 2884
Credit: 471,213,344
RAC: 261,055
300 million credit badge13 year member badgeextraordinary contributions badge
Message 64455 - Posted: 6 Apr 2016, 11:13:25 UTC - in response to Message 64452.  

Fantastic! Thank you for that little file..

Where does that go on a Mac?

From my digging around, most likely place would be Hard Drive > Library > Application Support > BOINC Data

Is that correct?

Thank you!

C. Perez


I have no clue on a Mac, sorry. In Windows it goes in Hard drive > program data > Boinc. In that directory are 3 directories called 'notices', 'projects' and 'slots', so if they are in your "Boinc data" directory then yes that is the right spot.
ID: 64455 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote

Message boards : Number crunching : Intermittent Computation Errors

©2022 Astroinformatics Group