Application for Multi GPU

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Profile [AF>HFR>RR] Jim PROFIT

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Message 1508 - Posted: 18 Aug 2008, 10:34:01 UTC

For the moment i have a GTX 260 and 280.
I would like to knon if it's possible to put them together?

If this is the case, it seems to me to have read in a post on the forum, that you could put an application for this purpose.
Is this true and when i can expected to made some test?

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Message 1509 - Posted: 18 Aug 2008, 11:58:06 UTC - in response to Message 1508.  

For the moment i have a GTX 260 and 280.
I would like to knon if it's possible to put them together?


The current BOINC client (6.3.8) should detect multiple GPUs and run one GPUGRID instance per device. However, we have not yet tested this feature so cannot guarantee that it will work.

MJH
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Message 1510 - Posted: 18 Aug 2008, 12:57:10 UTC - in response to Message 1508.  

For the moment i have a GTX 260 and 280.
I would like to knon if it's possible to put them together?

If this is the case, it seems to me to have read in a post on the forum, that you could put an application for this purpose.
Is this true and when i can expected to made some test?

Jim PROFIT


If you are ready, we are ready.

gdf
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Message 1513 - Posted: 18 Aug 2008, 13:41:57 UTC - in response to Message 1510.  
Last modified: 18 Aug 2008, 13:42:09 UTC


If you are ready, we are ready.

gdf


I must find some time in the week, may be for this week-end!
I will try it on Ubuntu and Windows if i can keep the GTX 280.

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Message 1531 - Posted: 19 Aug 2008, 0:10:48 UTC - in response to Message 1509.  
Last modified: 19 Aug 2008, 0:13:32 UTC

The current BOINC client (6.3.8) should detect multiple GPUs and run one GPUGRID instance per device. However, we have not yet tested this feature so cannot guarantee that it will work.

MJH


Hi, I tested BOINC 6.3.8 on UBUNTU with 2 GPUs (nVidia drivers 177.13). Boinc client really detects 2 GPUs but does not run them together (8400 GS and 8800 GTS, both already tested on GPUGrid positively). If U prefer I've also a 8800 GTX to be used instead of 8400.

I aborted calculations, need suggestions. How can I report something to U ?

P.S. I tested also on windows VISTA 32 but BOINC 6.3.8 detects only main coprocessor (GPU, 8800 GTS) - (nVidia drivers 177.35)
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Message 1540 - Posted: 19 Aug 2008, 9:07:58 UTC - in response to Message 1531.  

The current BOINC client (6.3.8) should detect multiple GPUs and run one GPUGRID instance per device. However, we have not yet tested this feature so cannot guarantee that it will work.

MJH


Hi, I tested BOINC 6.3.8 on UBUNTU with 2 GPUs (nVidia drivers 177.13). Boinc client really detects 2 GPUs but does not run them together (8400 GS and 8800 GTS, both already tested on GPUGrid positively). If U prefer I've also a 8800 GTX to be used instead of 8400.

I aborted calculations, need suggestions. How can I report something to U ?

P.S. I tested also on windows VISTA 32 but BOINC 6.3.8 detects only main coprocessor (GPU, 8800 GTS) - (nVidia drivers 177.35)



Any two would be fine at this point to test. The current client should try to run two workunits at the time if the client recognize two GPUs. Does it happen?

gdf
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Message 1565 - Posted: 20 Aug 2008, 11:54:59 UTC - in response to Message 1540.  

Does the Windows version not support multigpu?
As I have 2 8800GT's, Boinc lists them both when it starts up, however only 1 task ever runs.

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Message 1570 - Posted: 20 Aug 2008, 16:10:42 UTC - in response to Message 1565.  

Does the Windows version not support multigpu?
As I have 2 8800GT's, Boinc lists them both when it starts up, however only 1 task ever runs.


This is something to start off with.
So, you are on client 6.3.8. Can you paste here the message where the client report two GPUs?

The application should work.

gdf
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Message 1571 - Posted: 20 Aug 2008, 16:45:33 UTC - in response to Message 1570.  

Does the Windows version not support multigpu?
As I have 2 8800GT's, Boinc lists them both when it starts up, however only 1 task ever runs.


This is something to start off with.
So, you are on client 6.3.8. Can you paste here the message where the client report two GPUs?

The application should work.

gdf


When I run Boinc v6.3.8 after the "development" warning, and it's listing of my Computer info it shows:
CUDA devices found
Coprocessor: GeForce 8800 GT (1)
Coprocessor: GeForce 8800 GT (1)



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Message 1574 - Posted: 20 Aug 2008, 18:05:18 UTC - in response to Message 1571.  

Does the Windows version not support multigpu?
As I have 2 8800GT's, Boinc lists them both when it starts up, however only 1 task ever runs.


This is something to start off with.
So, you are on client 6.3.8. Can you paste here the message where the client report two GPUs?

The application should work.

gdf


When I run Boinc v6.3.8 after the "development" warning, and it's listing of my Computer info it shows:
CUDA devices found
Coprocessor: GeForce 8800 GT (1)
Coprocessor: GeForce 8800 GT (1)


I would suggest turning on debug flags for the scheduler. When I did this I got messages like this
8/20/2008 12:56:04 PM||insufficient coproc CUDA (1 + 1 > 1)
Which for me is correct since I only have 1 GPU it can not run 2.
This probably would help find out why it will not run 2.
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Message 1575 - Posted: 20 Aug 2008, 18:12:38 UTC - in response to Message 1574.  

I would suggest turning on debug flags for the scheduler. When I did this I got messages like this
8/20/2008 12:56:04 PM||insufficient coproc CUDA (1 + 1 > 1)
Which for me is correct since I only have 1 GPU it can not run 2.
This probably would help find out why it will not run 2.


Is that what is explained at http://boinc.berkeley.edu/wiki/Client_configuration , in the CPU scheduling bit?

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Message 1577 - Posted: 20 Aug 2008, 21:05:54 UTC - in response to Message 1575.  

I would suggest turning on debug flags for the scheduler. When I did this I got messages like this
8/20/2008 12:56:04 PM||insufficient coproc CUDA (1 + 1 > 1)
Which for me is correct since I only have 1 GPU it can not run 2.
This probably would help find out why it will not run 2.


Is that what is explained at http://boinc.berkeley.edu/wiki/Client_configuration , in the CPU scheduling bit?

Yes.

Basiccaly you need to do this, note this will generate a lot of messages in your log.

You should exit the core client and manager

Create in you boinc data directory if not present the file cc_config.xml
If you already have one add (edit) into it in the approptriate section.

<cc_config>
<log_flags>
<cpu_sched_debug>1</cpu_sched_debug>
</log_flags>
</cc_config>

Then restart and observe log and look for any lines which might expalin what is going on about the GPU or cuda device.

When done, you need to exit again, remove debug lines and then you can restart normally.
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Message 1579 - Posted: 20 Aug 2008, 22:46:04 UTC - in response to Message 1577.  
Last modified: 20 Aug 2008, 22:47:29 UTC

It's saying "20/08/2008 23:45:59||insufficient coproc CUDA (1 + 1 > 1)"

I guess even though Boinc is seeing both 8800GT's, for some reason either it or the project thinks I only have 1?

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Message 1580 - Posted: 20 Aug 2008, 23:57:06 UTC - in response to Message 1579.  

It's saying "20/08/2008 23:45:59||insufficient coproc CUDA (1 + 1 > 1)"

I guess even though Boinc is seeing both 8800GT's, for some reason either it or the project thinks I only have 1?


Thanks for the testing. I've reported this to the developers to let them have a look into, I think GDF is asleep now. If they need more info I'll let you know.
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Message 1582 - Posted: 21 Aug 2008, 9:03:18 UTC - in response to Message 1580.  

It's saying "20/08/2008 23:45:59||insufficient coproc CUDA (1 + 1 > 1)"

I guess even though Boinc is seeing both 8800GT's, for some reason either it or the project thinks I only have 1?


Thanks for the testing. I've reported this to the developers to let them have a look into, I think GDF is asleep now. If they need more info I'll let you know.


Thanks :)

I tested it in Linux encase it was a windows problem (only had the 2 8800GT's in the system a week), and I also get the same error :(

I also tried removing the SLI cable, to see if that was causing a problem.
But still no Joy.

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Message 1587 - Posted: 21 Aug 2008, 11:03:27 UTC

I'm told by Dr.Anderson a fix for this has been checked in, It should appear in the next client release also.
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Message 1592 - Posted: 21 Aug 2008, 14:27:45 UTC - in response to Message 1587.  

I'm told by Dr.Anderson a fix for this has been checked in, It should appear in the next client release also.


Cool :)

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Message 1600 - Posted: 22 Aug 2008, 4:10:45 UTC - in response to Message 1592.  

I'm told by Dr.Anderson a fix for this has been checked in, It should appear in the next client release also.


Cool :)


New version 6.3.9 has the fix.

Please try.

gdf
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Message 1605 - Posted: 22 Aug 2008, 10:56:29 UTC - in response to Message 1600.  
Last modified: 22 Aug 2008, 10:57:14 UTC



New version 6.3.9 has the fix.

Please try.

gdf


And the BOINC Client is still crashing on Vista 64 bit... :(

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Message 1607 - Posted: 22 Aug 2008, 11:10:31 UTC - in response to Message 1605.  



New version 6.3.9 has the fix.

Please try.

gdf


And the BOINC Client is still crashing on Vista 64 bit... :(


Reported again to Berkeley.

gdf
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