Hi, I run Einstein@home, can't seem to get GPU's to work for processing:

test@test:~$ lspci | grep -i vga
01:00.0 VGA compatible controller: NVIDIA Corporation GK107 [GeForce GT 740] (rev a1)

test@test:~$ boinc
07-Mar-2016 16:56:15 [---] cc_config.xml not found - using defaults
07-Mar-2016 16:56:15 [---] Starting BOINC client version 7.2.42 for x86_64-pc-linux-gnu
07-Mar-2016 16:56:15 [---] log flags: file_xfer, sched_ops, task
07-Mar-2016 16:56:15 [---] Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3
07-Mar-2016 16:56:15 [---] Data directory: /home/david
execv: No such file or directory
07-Mar-2016 16:56:15 [---] GPU detection failed. error code 512
07-Mar-2016 16:56:15 [---] No usable GPUs found
07-Mar-2016 16:56:15 [---] Host name: badass
07-Mar-2016 16:56:15 [---] Processor: 4 GenuineIntel Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz [Family 6 Model 60 Stepping 3]
07-Mar-2016 16:56:15 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm xsaveopt
07-Mar-2016 16:56:15 [---] OS: Linux: 3.19.0-25-generic
07-Mar-2016 16:56:15 [---] Memory: 7.75 GB physical, 7.70 GB virtual
07-Mar-2016 16:56:15 [---] Disk: 102.33 GB total, 59.95 GB free
07-Mar-2016 16:56:15 [---] Local time is UTC -5 hours
07-Mar-2016 16:56:15 [---] No general preferences found - using defaults
07-Mar-2016 16:56:15 [---] Preferences:
07-Mar-2016 16:56:15 [---]    max memory usage when active: 3967.71MB
07-Mar-2016 16:56:15 [---]    max memory usage when idle: 7141.87MB
07-Mar-2016 16:56:15 [---]    max disk usage: 59.85GB
07-Mar-2016 16:56:15 [---]    don't use GPU while active
07-Mar-2016 16:56:15 [---]    suspend work if non-BOINC CPU load exceeds 25%
07-Mar-2016 16:56:15 [---]    (to change preferences, visit a project web site or select Preferences in the Manager)
dir_open: Could not open directory 'slots' from '/home/david'.
^F07-Mar-2016 16:56:15 [---] GUI RPC bind to port 31416 failed: 98
07-Mar-2016 16:56:45 gstate.init() failed
Error Code: -180

Any help would be much appreciated. Thanks.

Hi, I run Einstein@home, can't seem to get GPU's to work for processing:

David hi

Does this mean you have it working for CPU tasks?

How have you installed nvidia drivers? Post nvidia-smi output if you can.

Did you install boinc from repository? I'll assume so, if not then what i write below is off course.

Assuming you did install from repo, then

sudo /etc/init.d/boinc-client restart

should restart.

This

test@test:~$ boinc

07-Mar-2016 16:56:15 [---] Data directory: /home/david execv: No such file or directory

is not the optimal way to start boinc on a standard ubuntu install, boinc is complaining here it can not find it's data directory, let alone start looking for GPUs.

If CPU boinc is working, the first 30 lines of the event log should help. (it will show the data directory etc)

good luck.

I have working boinc cpu tasks, I am using boinc-manager to start it normally, not the boinc command. I just tried the boinc command becaues I knew it would give output about the gpu, I can't figure out how to see from the gui if it is using the gpu.

I installed boinc packages from the repos.

test@test:~$ nvidia-smi
Mon Mar  7 18:00:35 2016       
+------------------------------------------------------+                       
| NVIDIA-SMI 352.63     Driver Version: 352.63         |                       
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GT 740      Off  | 0000:01:00.0     N/A |                  N/A |
| 30%   34C    P8    N/A /  N/A |    355MiB /  2047MiB |     N/A      Default |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID  Type  Process name                               Usage      |
|=============================================================================|
|    0                  Not Supported                                         |
+-----------------------------------------------------------------------------+

I have working boinc cpu tasks, I am using boinc-manager to start it normally, not the boinc command. I just tried the boinc command becaues I knew it would give output about the gpu, I can't figure out how to see from the gui if it is using the gpu.

I installed boinc packages from the repos.

OK goodo -that makes it a bit easier. Did you try a restart as below?

From the manager <Ctrl><Shift>E should show the event log.

The standard install has the data directory at /var/lib/boinc-client

You will find a few things there. The important thing here is the event log is also stored in a file named stdoutdae.txt

It will be revealing, please post the first 30-40 lines.

I restarted boinc as specified below. Looks like logs are in /var/lib/boinc-client. Here is the

david@badass:/var/lib/boinc-client$ tail -n 60  stdoutdae.txt 
07-Mar-2016 14:23:19 [---] Suspending computation - user request
07-Mar-2016 15:23:18 [---] Resuming computation
07-Mar-2016 16:44:20 [---] Suspending computation - user request
07-Mar-2016 16:44:47 [---] Resuming computation
07-Mar-2016 16:47:48 [---] Received signal 15
07-Mar-2016 16:47:49 [---] Exit requested by user
07-Mar-2016 16:48:17 [---] Starting BOINC client version 7.2.42 for x86_64-pc-linux-gnu
07-Mar-2016 16:48:17 [---] log flags: file_xfer, sched_ops, task
07-Mar-2016 16:48:17 [---] Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3
07-Mar-2016 16:48:17 [---] Data directory: /var/lib/boinc-client
07-Mar-2016 16:48:17 [---] No usable GPUs found
07-Mar-2016 16:48:17 [---] Host name: badass
07-Mar-2016 16:48:17 [---] Processor: 4 GenuineIntel Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz [Family 6 Model 60 Stepping 3]
07-Mar-2016 16:48:17 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm xsaveopt
07-Mar-2016 16:48:17 [---] OS: Linux: 3.19.0-25-generic
07-Mar-2016 16:48:17 [---] Memory: 7.75 GB physical, 7.70 GB virtual
07-Mar-2016 16:48:17 [---] Disk: 102.33 GB total, 59.96 GB free
07-Mar-2016 16:48:17 [---] Local time is UTC -5 hours
07-Mar-2016 16:48:17 [---] Config: GUI RPCs allowed from:
07-Mar-2016 16:48:17 [Einstein@Home] URL http://einstein.phys.uwm.edu/; Computer ID 12211950; resource share 100
07-Mar-2016 16:48:17 [---] No general preferences found - using defaults
07-Mar-2016 16:48:17 [---] Reading preferences override file
07-Mar-2016 16:48:17 [---] Preferences:
07-Mar-2016 16:48:17 [---]    max memory usage when active: 3967.71MB
07-Mar-2016 16:48:17 [---]    max memory usage when idle: 7141.87MB
07-Mar-2016 16:48:17 [---]    max disk usage: 59.88GB
07-Mar-2016 16:48:17 [---]    don't use GPU while active
07-Mar-2016 16:48:17 [---]    suspend work if non-BOINC CPU load exceeds 25%
07-Mar-2016 16:48:17 [---]    (to change preferences, visit a project web site or select Preferences in the Manager)
07-Mar-2016 16:48:17 [---] gui_rpc_auth.cfg is empty - no GUI RPC password protection
07-Mar-2016 16:48:17 [---] Not using a proxy
07-Mar-2016 16:48:17 Initialization completed
07-Mar-2016 16:51:13 [---] Received signal 15
07-Mar-2016 16:51:13 [---] Exit requested by user
07-Mar-2016 16:51:26 [---] Starting BOINC client version 7.2.42 for x86_64-pc-linux-gnu
07-Mar-2016 16:51:26 [---] log flags: file_xfer, sched_ops, task
07-Mar-2016 16:51:26 [---] Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3
07-Mar-2016 16:51:26 [---] Data directory: /var/lib/boinc-client
07-Mar-2016 16:51:26 [---] No usable GPUs found
07-Mar-2016 16:51:26 [---] Host name: badass
07-Mar-2016 16:51:26 [---] Processor: 4 GenuineIntel Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz [Family 6 Model 60 Stepping 3]
07-Mar-2016 16:51:26 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm xsaveopt
07-Mar-2016 16:51:26 [---] OS: Linux: 3.19.0-25-generic
07-Mar-2016 16:51:26 [---] Memory: 7.75 GB physical, 7.70 GB virtual
07-Mar-2016 16:51:26 [---] Disk: 102.33 GB total, 59.95 GB free
07-Mar-2016 16:51:26 [---] Local time is UTC -5 hours
07-Mar-2016 16:51:26 [---] Config: GUI RPCs allowed from:
07-Mar-2016 16:51:26 [Einstein@Home] URL http://einstein.phys.uwm.edu/; Computer ID 12211950; resource share 100
07-Mar-2016 16:51:26 [---] No general preferences found - using defaults
07-Mar-2016 16:51:26 [---] Reading preferences override file
07-Mar-2016 16:51:26 [---] Preferences:
07-Mar-2016 16:51:26 [---]    max memory usage when active: 3967.71MB
07-Mar-2016 16:51:26 [---]    max memory usage when idle: 7141.87MB
07-Mar-2016 16:51:26 [---]    max disk usage: 59.87GB
07-Mar-2016 16:51:26 [---]    don't use GPU while active
07-Mar-2016 16:51:26 [---]    suspend work if non-BOINC CPU load exceeds 25%
07-Mar-2016 16:51:26 [---]    (to change preferences, visit a project web site or select Preferences in the Manager)
07-Mar-2016 16:51:26 [---] gui_rpc_auth.cfg is empty - no GUI RPC password protection
07-Mar-2016 16:51:26 [---] Not using a proxy
07-Mar-2016 16:51:26 Initialization completed

Thank you so much for responding so fast.

07-Mar-2016 16:48:17 [---] No usable GPUs found

Try running sudo nvidia-modprobe first then a restart again.

Then if that fails it's needing a few libraries i suspect.

I don't think these are installed by default Ubuntu install. I normally get these from here

ldconfig -p | grep libOpenCL
ldconfig -p | grep libcuda

should show where the host thinks these important libraries are.

I guess I don't have nvidia-modprobe as it couldn't be found. Looks like I have the libraries though right?

david@badass:/var/lib/boinc-client$ ldconfig -p | grep -i libopencl
	libOpenCL.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libOpenCL.so.1
	libOpenCL.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libOpenCL.so
david@badass:/var/lib/boinc-client$ sudo ldconfig -p | grep libcuda
	libcuda.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libcuda.so.1
	libcuda.so.1 (libc6) => /usr/lib/i386-linux-gnu/libcuda.so.1
	libcuda.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libcuda.so
	libcuda.so (libc6) => /usr/lib/i386-linux-gnu/libcuda.so
david@badass:/var/lib/boinc-client$ sudo nvidia-modprobe
sudo: nvidia-modprobe: command not found

[/code]

I guess I don't have nvidia-modprobe as it couldn't be found.

I guess you didn't try installing it?

Sorry, due to my ignorance I didn't think to just install it, lol. I guess this means it is working now?

08-Mar-2016 15:31:12 [---] Received signal 15
08-Mar-2016 15:31:13 [---] Exit requested by user
08-Mar-2016 15:31:26 [---] Starting BOINC client version 7.2.42 for x86_64-pc-linux-gnu
08-Mar-2016 15:31:26 [---] log flags: file_xfer, sched_ops, task
08-Mar-2016 15:31:26 [---] Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3
08-Mar-2016 15:31:26 [---] Data directory: /var/lib/boinc-client
08-Mar-2016 15:31:26 [---] CUDA: NVIDIA GPU 0: GeForce GT 740 (driver version unknown, CUDA version 7.5, compute capability 3.0, 2047MB, 1696MB available, 763 GFLOPS peak)
08-Mar-2016 15:31:26 [---] OpenCL: NVIDIA GPU 0: GeForce GT 740 (driver version 352.63, device version OpenCL 1.2 CUDA, 2047MB, 1696MB available, 763 GFLOPS peak)
08-Mar-2016 15:31:26 [---] Host name: badass
08-Mar-2016 15:31:26 [---] Processor: 4 GenuineIntel Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz [Family 6 Model 60 Stepping 3]
08-Mar-2016 15:31:26 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm xsaveopt
08-Mar-2016 15:31:26 [---] OS: Linux: 3.19.0-25-generic
08-Mar-2016 15:31:26 [---] Memory: 7.75 GB physical, 7.70 GB virtual
08-Mar-2016 15:31:26 [---] Disk: 102.33 GB total, 59.84 GB free
08-Mar-2016 15:31:26 [---] Local time is UTC -5 hours
08-Mar-2016 15:31:26 [---] Config: GUI RPCs allowed from:
08-Mar-2016 15:31:26 [Einstein@Home] URL http://einstein.phys.uwm.edu/; Computer ID 12211950; resource share 100
08-Mar-2016 15:31:26 [---] No general preferences found - using defaults
08-Mar-2016 15:31:26 [---] Reading preferences override file
08-Mar-2016 15:31:26 [---] Preferences:
08-Mar-2016 15:31:26 [---]    max memory usage when active: 3967.71MB
08-Mar-2016 15:31:26 [---]    max memory usage when idle: 7141.87MB
08-Mar-2016 15:31:26 [---]    max disk usage: 59.76GB
08-Mar-2016 15:31:26 [---]    don't use GPU while active
08-Mar-2016 15:31:26 [---]    suspend work if non-BOINC CPU load exceeds 25%
08-Mar-2016 15:31:26 [---]    (to change preferences, visit a project web site or select Preferences in the Manager)
08-Mar-2016 15:31:26 [---] gui_rpc_auth.cfg is empty - no GUI RPC password protection
08-Mar-2016 15:31:26 [---] Not using a proxy
08-Mar-2016 15:31:26 Initialization completed
08-Mar-2016 15:31:26 [---] Suspending GPU computation - computer is in use

What is nvidia-modprobe and why did that allow this to work? Just trying to figure out so that I will know for next time. Thanks.

Also, my only other questions is about this:

08-Mar-2016 15:31:26 [---] Suspending GPU computation - computer is in use

Is there a good way to tell boinc to use GPU even if computer is in use until I tell it not to? Thanks.

What is nvidia-modprobe and why did that allow this to work?

It loads NVIDIA kernel modules and does other necessary setup work on behalf of the CUDA/OpenCL runtime. The runtime does not have the required privileges to do that by itself.

Is there a good way to tell boinc to use GPU even if computer is in use until I tell it not to?

Did you try unticking the "Suspend GPU computing when computer is in use" checkbox in Computing preferences?

Is there a good way to tell boinc to use GPU even if computer is in use until I tell it not to?

Did you try unticking the "Suspend GPU computing when computer is in use" checkbox in Computing preferences?

I was able to find the option in the menu in the 'boinctui' program. Not sure if this is the normal way to do it or if there is a more standard way.

I am happy about getting this working because I run Einstein@home, now using GPU, and GIMPS prime search using CPU, so they aren't fighting for CPU resources now. Thanks for all of the help.

Well, there's BOINC Manager. BOINC TUI is about the same as Manager expect it's Text UI and made by 3rd party.

What is nvidia-modprobe and why did that allow this to work?

It loads NVIDIA kernel modules and does other necessary setup work on behalf of the CUDA/OpenCL runtime. The runtime does not have the required privileges to do that by itself.

Thanks Juha, I'll add

$ man nvidia-modprobe

I am happy about getting this working because I run Einstein@home, now using GPU, and GIMPS prime search using CPU, so they aren't fighting for CPU resources now. Thanks for all of the help.

Thats good. Just be mindful that GPU tasks do need CPU resources to "feed" them. A rule of thumb is allow one free core per GPU card for good performance. You can get an idea of how fast the GPU can run by not running CPU tasks at all, then add CPU tasks.

At E@H you can safely run two or three GPU tasks concurrently. Each task will run slower but the number of tasks overall should increase. Probably best to post E@H questions over on their forums.

There has been a couple of bugs reported on this issue

nvidia-graphics-drivers-* should recommend nvidia-modprobe

and recently a fix has been realease on Trusty (14.04) here

Always load all the nvidia modules

Excellent! Now we only need something similar for fglrx and Beignet.

The fix is in 16.04 but I don't think it has made it 14.04 just yet, it's still listed as In progress for 14.04.