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#1 2014-03-04 13:55:53

wpjsolo
Member
Registered: 2013-08-27
Posts: 5

[S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

./deviceQuery Starting...

CUDA Device Query (Runtime API) version (CUDART static linking)

cudaGetDeviceCount returned 30
-> unknown error
Result = FAIL

Is it a Bug?Or I need to wait new version of cuda?

Last edited by wpjsolo (2014-03-05 09:29:26)

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#2 2014-03-04 14:34:07

sl1pkn07
Member
From: Spanishtán
Registered: 2010-03-30
Posts: 344

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

launch with sudo/su

http://sl1pkn07.no-ip.com/paste/view/a78f18c8

Last edited by sl1pkn07 (2014-03-04 14:34:51)

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#3 2014-03-04 17:56:21

rdahlgren
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From: Middle States, USA
Registered: 2014-02-17
Posts: 36
Website

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

Similar issue, CUDA 5.5 samples fail with the latest nvidia update:

./deviceQueryDrv Starting...

CUDA Device Query (Driver API) statically linked version 
modprobe: FATAL: Module nvidia-uvm not found.
cuInit(0) returned 999
-> CUDA_ERROR_UNKNOWN
Result = FAIL

Other samples also fail:

sudo ./particles 
CUDA Particles Simulation Starting...

grid: 64 x 64 x 64 = 262144 cells
particles: 16384
modprobe: FATAL: Module nvidia-uvm not found.
CUDA error at ../../common/inc/helper_cuda.h:898 code=30(cudaErrorUnknown) "cudaGetDeviceCount(&device_count)" 

These worked prior to the update. I'm guessing I need to seek out the nvidia-uvm module?

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#4 2014-03-04 19:10:44

rdahlgren
Member
From: Middle States, USA
Registered: 2014-02-17
Posts: 36
Website

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

Another clue to my problem - when running the deviceQueryDrv example with sudo, I get this additional line in the output:

modprobe: FATAL: Module nvidia-uvm not found.

Without sudo, this does not occur. I've not had to use sudo with these examples before...

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#5 2014-03-04 19:21:24

rdahlgren
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From: Middle States, USA
Registered: 2014-02-17
Posts: 36
Website

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

I've posted a comment on a related thread in the Nvidia Developer forums.

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#6 2014-03-04 23:38:47

numasan
Member
Registered: 2009-11-13
Posts: 26

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

I also have this problem after the upgrade to 334.21 unfortunately. Hope there's a logical explanation and fix soon.

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#7 2014-03-05 00:16:25

rdahlgren
Member
From: Middle States, USA
Registered: 2014-02-17
Posts: 36
Website

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

numasan - Take a look at the Nvidia Developer forums link I posted. Apparently the new drivers work with the CUDA 6.0 release candidate. I've applied for access to the RCs, but that probably won't go through for another day or two :-/

I'll definitely reply back with whether it worked or not after I get access. If anyone else has access to the 6.0 RC, do the rest of us a favor and try it out :-)

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#8 2014-03-05 09:27:30

wpjsolo
Member
Registered: 2013-08-27
Posts: 5

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

I update to nvidia 334.21-2,  and the errors go away.

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#9 2014-03-05 19:26:19

numasan
Member
Registered: 2009-11-13
Posts: 26

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

@rdahlgren
Great if it works with CUDA 6.0 but I imagine it will be quite a while before we see that in Arch.

Like wpjsolo said, some of the errors go away in 334.21-2 but with caveats. I have to run some CUDA code as root, before it becomes available for users. It is not enough to 'modprobe nvidia_uvm' before using CUDA software as a user; I _have_ to execute some CUDA code as root first. So close but not optimal.

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#10 2014-03-06 00:14:01

rdahlgren
Member
From: Middle States, USA
Registered: 2014-02-17
Posts: 36
Website

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

numasan - Unfortunately the 'run some code as root' workaround isn't working for me, which is unfortunate as I was just getting started with CUDA, haha. Do you have the nvidia-uvm module at all? Probing for it fails for me and `lsmod | grep nvidia` only shows the `nvidia` module.

As for CUDA 6.0 release candidate, it requires an old version of GCC to build and the samples fail if nvcc isn't up to date. I really don't feel like going down the "multiple versions of gcc" path right now :-/

What steps exactly does your workaround involve? Does running the deviceQueryDrv sample as root work for you?

Last edited by rdahlgren (2014-03-06 00:16:24)

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#11 2014-03-06 01:01:39

rdahlgren
Member
From: Middle States, USA
Registered: 2014-02-17
Posts: 36
Website

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

I had previously installed CUDA from the nvidia developers site. I installed nvidia-utils-beta and nvidia-beta-dkms from the AUR. After that, I have the behavior the other posters in this thread are describing:

1. Run any sample as a regular user, it fails on cuInit
2. Run the sample as root, it succeeds
3. Run the sample as a regular user, it succeeds

Note that this is after having loaded the nvidia-uvm module via modprobe

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#12 2014-03-06 02:06:08

numasan
Member
Registered: 2009-11-13
Posts: 26

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

I use cuda-5.5.22-1 and nvidia-334.21-2 and nothing from AUR. With nvidia-334.21-1 nothing CUDA would run as either user or root, but the update from yesterday works with the workaround.

I tried manually loading nvidia-uvm but it doesn't seem to matter when running CUDA software as a user. Looks like the nvidia-uvm module gets loaded automatically when running CUDA software as root (again, not sure nvidia-uvm is the key here). Only tested with Blender and Cudaminer:

user: Start Blender/Cudaminer = no compute-device recognized.
root: Start Cudaminer, stop when it continues normally.
user: Start Blender = Nvidia compute-device recognized and works normally.

Last edited by numasan (2014-03-06 02:06:36)

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#13 2014-03-07 01:35:21

wwmm
Member
From: Rio de Janeiro, Brazil
Registered: 2010-08-14
Posts: 21

Re: [S]CUDA deviceQuery returned 30 error After upgrade to nvidia 334.21-1

I use OpenCL and not cuda but the problem is the same. After loading the nvidia_uvm module and running once as root I can use the GPU in OpenCL as a regular user.

Last edited by wwmm (2014-03-07 12:37:02)

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