I tried it here too from the GUI, the first time it took about 40s for the tasks to disappear after they stopped, but it worked, remaining tests were quick exits.

I'll give it another try before I erase it. It will be a while though, I'm going to have to reinstall the nVidida driver and hope it can find my GPUs. After about the 3rd time reinstalling the Repository driver the thing can't even find my GPUs. Hopefully it will work again with the nVidia driver. Don't hold your breath.

For me, it has always stopped quick. I have not seen a drawn out stop like that. Certainly strange. I don't know the configuration of eveyone's machine, but perhaps if they are older machines and the load is very high that it might just take a while for the command to fully execute?

Do we know for sure 7.2 BOINC does not have a bug related to this? Is a revision history kept somewhere?

Just spit balling here seeing if something sticks.

---

My machines don't have this problem in Ubuntu or Windows, only Mint 18.2. Basically, I've had the same results as Keith. It worked fine at first, then went rapidly down hill. Keith is now running Ubuntu 16.04, and seems to be working well. My machine is currently running Ubuntu 14.04 and not having a Hiccup.

I get the two message in the pop-up window about asking to stop tasks in Ubuntu 16.04 and BOINC_7.2.47. The tasks don't seem to stop and it I think it takes a long time to kill them like Brent said. I have used the Kill command in System Monitor to stop the Manager so far.

I just use the ppa repository that DallasDawg posted and installed the 384.76 drivers. I STILL don't have any OpenCL support. I thought the Nvidia drivers from Nvidia was supposed to fix that.

I guess I will try the sym link to the opencl file that was posted earlier.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

PPA? I don't think nVidia has a PPA. You'll need to download the drivers from nVidia and install them in the Console after stopping lightdm. The last I heard 384 were Beta Drivers, try the 381.22 from here, http://www.nvidia.com/object/linux-amd64-display-archive.html

I get the two message in the pop-up window about asking to stop tasks in Ubuntu 16.04 and BOINC_7.2.47. The tasks don't seem to stop and it I think it takes a long time to kill them like Brent said. I have used the Kill command in System Monitor to stop the Manager so far.

I just use the ppa repository that DallasDawg posted and installed the 384.76 drivers. I STILL don't have any OpenCL support. I thought the Nvidia drivers from Nvidia was supposed to fix that.

I guess I will try the sym link to the opencl file that was posted earlier.

Keith,

Can you run clinfo in the terminal and tell us what it reports? You may have to install it. I did. This command will print out your opencl system info. I would post my output here, but with two cards in this machine the output is rather large. I can post if needed...maybe for comparison.

---

I used the ppa that DallasDawg posted in Message 1879748
It shows 384.47 in Nvidia X Server Settings.

I just tried to make the link that you posted in Message 1879730 and it did not work. Still no OpenCL support.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

Just thinking ... with Mint 18.3 being so new and under changes, and all the mirror sites around the world, we may not all be using the exact same 'installs'
TBar also said he's on Mint 18.2 which could be an entirely different ball of bugs.

PPA? I don't think nVidia has a PPA. You'll need to download the drivers from nVidia and install them in the Console after stopping lightdm. The last I heard 384 were Beta Drivers, try the 381.22 from here, http://www.nvidia.com/object/linux-amd64-display-archive.html

Correct. Nvidia does not host a PPA for drivers. However, the Linux community does. There are a group of developers working with Nvidia that host the PPA. It contains the latest stable and beta releases plus some older revisions.

---

I get the two message in the pop-up window about asking to stop tasks in Ubuntu 16.04 and BOINC_7.2.47. The tasks don't seem to stop and it I think it takes a long time to kill them like Brent said. I have used the Kill command in System Monitor to stop the Manager so far.

I just use the ppa repository that DallasDawg posted and installed the 384.76 drivers. I STILL don't have any OpenCL support. I thought the Nvidia drivers from Nvidia was supposed to fix that.

I guess I will try the sym link to the opencl file that was posted earlier.

Keith,

Can you run clinfo in the terminal and tell us what it reports? You may have to install it. I did. This command will print out your opencl system info. I would post my output here, but with two cards in this machine the output is rather large. I can post if needed...maybe for comparison.

Installed clinfo. This is the output:

keith@Darksider:~$ clinfo
Number of platforms                               1
  Platform Name                                   NVIDIA CUDA
  Platform Vendor                                 NVIDIA Corporation
  Platform Version                                OpenCL 1.2 CUDA 9.0.101
  Platform Profile                                FULL_PROFILE
  Platform Extensions                             cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer
  Platform Extensions function suffix             NV

  Platform Name                                   NVIDIA CUDA
Number of devices                                 3
  Device Name                                     GeForce GTX 970
  Device Vendor                                   NVIDIA Corporation
  Device Vendor ID                                0x10de
  Device Version                                  OpenCL 1.2 CUDA
  Driver Version                                  384.47
  Device OpenCL C Version                         OpenCL C 1.2 
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Device Topology (NV)                            PCI-E, 01:00.0
  Max compute units                               13
  Max clock frequency                             1279MHz
  Compute Capability (NV)                         5.2
  Device Partition                                (core)
    Max number of sub-devices                     1
    Supported partition types                     None
  Max work item dimensions                        3
  Max work item sizes                             1024x1024x64
  Max work group size                             1024
  Preferred work group size multiple              32
  Warp size (NV)                                  32
  Preferred / native vector sizes                 
    char                                                 1 / 1       
    short                                                1 / 1       
    int                                                  1 / 1       
    long                                                 1 / 1       
    half                                                 0 / 0        (n/a)
    float                                                1 / 1       
    double                                               1 / 1        (cl_khr_fp64)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  Yes
  Double-precision Floating-point support         (cl_khr_fp64)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Address bits                                    64, Little-Endian
  Global memory size                              4230217728 (3.94GiB)
  Error Correction support                        No
  Max memory allocation                           1057554432 (1009MiB)
  Unified memory for Host and Device              No
  Integrated memory (NV)                          No
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       4096 bits (512 bytes)
  Global Memory cache type                        Read/Write
  Global Memory cache size                        212992
  Global Memory cache line                        128 bytes
  Image support                                   Yes
    Max number of samplers per kernel             32
    Max size for 1D images from buffer            134217728 pixels
    Max 1D or 2D image array size                 2048 images
    Max 2D image size                             16384x16384 pixels
    Max 3D image size                             4096x4096x4096 pixels
    Max number of read image args                 256
    Max number of write image args                16
  Local memory type                               Local
  Local memory size                               49152 (48KiB)
  Registers per block (NV)                        65536
  Max constant buffer size                        65536 (64KiB)
  Max number of constant args                     9
  Max size of kernel argument                     4352 (4.25KiB)
  Queue properties                                
    Out-of-order execution                        Yes
    Profiling                                     Yes
  Prefer user sync for interop                    No
  Profiling timer resolution                      1000ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
    Kernel execution timeout (NV)                 Yes
  Concurrent copy and kernel execution (NV)       Yes
    Number of async copy engines                  2
  printf() buffer size                            1048576 (1024KiB)
  Built-in kernels                                
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                Yes
  Device Extensions                               cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer

  Device Name                                     GeForce GTX 970
  Device Vendor                                   NVIDIA Corporation
  Device Vendor ID                                0x10de
  Device Version                                  OpenCL 1.2 CUDA
  Driver Version                                  384.47
  Device OpenCL C Version                         OpenCL C 1.2 
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Device Topology (NV)                            PCI-E, 02:00.0
  Max compute units                               13
  Max clock frequency                             1279MHz
  Compute Capability (NV)                         5.2
  Device Partition                                (core)
    Max number of sub-devices                     1
    Supported partition types                     None
  Max work item dimensions                        3
  Max work item sizes                             1024x1024x64
  Max work group size                             1024
  Preferred work group size multiple              32
  Warp size (NV)                                  32
  Preferred / native vector sizes                 
    char                                                 1 / 1       
    short                                                1 / 1       
    int                                                  1 / 1       
    long                                                 1 / 1       
    half                                                 0 / 0        (n/a)
    float                                                1 / 1       
    double                                               1 / 1        (cl_khr_fp64)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  Yes
  Double-precision Floating-point support         (cl_khr_fp64)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Address bits                                    64, Little-Endian
  Global memory size                              4233494528 (3.943GiB)
  Error Correction support                        No
  Max memory allocation                           1058373632 (1009MiB)
  Unified memory for Host and Device              No
  Integrated memory (NV)                          No
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       4096 bits (512 bytes)
  Global Memory cache type                        Read/Write
  Global Memory cache size                        212992
  Global Memory cache line                        128 bytes
  Image support                                   Yes
    Max number of samplers per kernel             32
    Max size for 1D images from buffer            134217728 pixels
    Max 1D or 2D image array size                 2048 images
    Max 2D image size                             16384x16384 pixels
    Max 3D image size                             4096x4096x4096 pixels
    Max number of read image args                 256
    Max number of write image args                16
  Local memory type                               Local
  Local memory size                               49152 (48KiB)
  Registers per block (NV)                        65536
  Max constant buffer size                        65536 (64KiB)
  Max number of constant args                     9
  Max size of kernel argument                     4352 (4.25KiB)
  Queue properties                                
    Out-of-order execution                        Yes
    Profiling                                     Yes
  Prefer user sync for interop                    No
  Profiling timer resolution                      1000ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
    Kernel execution timeout (NV)                 No
  Concurrent copy and kernel execution (NV)       Yes
    Number of async copy engines                  2
  printf() buffer size                            1048576 (1024KiB)
  Built-in kernels                                
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                Yes
  Device Extensions                               cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer

  Device Name                                     GeForce GTX 970
  Device Vendor                                   NVIDIA Corporation
  Device Vendor ID                                0x10de
  Device Version                                  OpenCL 1.2 CUDA
  Driver Version                                  384.47
  Device OpenCL C Version                         OpenCL C 1.2 
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Device Topology (NV)                            PCI-E, 03:00.0
  Max compute units                               13
  Max clock frequency                             1279MHz
  Compute Capability (NV)                         5.2
  Device Partition                                (core)
    Max number of sub-devices                     1
    Supported partition types                     None
  Max work item dimensions                        3
  Max work item sizes                             1024x1024x64
  Max work group size                             1024
  Preferred work group size multiple              32
  Warp size (NV)                                  32
  Preferred / native vector sizes                 
    char                                                 1 / 1       
    short                                                1 / 1       
    int                                                  1 / 1       
    long                                                 1 / 1       
    half                                                 0 / 0        (n/a)
    float                                                1 / 1       
    double                                               1 / 1        (cl_khr_fp64)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  Yes
  Double-precision Floating-point support         (cl_khr_fp64)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Address bits                                    64, Little-Endian
  Global memory size                              4233494528 (3.943GiB)
  Error Correction support                        No
  Max memory allocation                           1058373632 (1009MiB)
  Unified memory for Host and Device              No
  Integrated memory (NV)                          No
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       4096 bits (512 bytes)
  Global Memory cache type                        Read/Write
  Global Memory cache size                        212992
  Global Memory cache line                        128 bytes
  Image support                                   Yes
    Max number of samplers per kernel             32
    Max size for 1D images from buffer            134217728 pixels
    Max 1D or 2D image array size                 2048 images
    Max 2D image size                             16384x16384 pixels
    Max 3D image size                             4096x4096x4096 pixels
    Max number of read image args                 256
    Max number of write image args                16
  Local memory type                               Local
  Local memory size                               49152 (48KiB)
  Registers per block (NV)                        65536
  Max constant buffer size                        65536 (64KiB)
  Max number of constant args                     9
  Max size of kernel argument                     4352 (4.25KiB)
  Queue properties                                
    Out-of-order execution                        Yes
    Profiling                                     Yes
  Prefer user sync for interop                    No
  Profiling timer resolution                      1000ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
    Kernel execution timeout (NV)                 No
  Concurrent copy and kernel execution (NV)       Yes
    Number of async copy engines                  2
  printf() buffer size                            1048576 (1024KiB)
  Built-in kernels                                
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                Yes
  Device Extensions                               cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer

NULL platform behavior
  clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  NVIDIA CUDA
  clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   Success [NV]
  clCreateContext(NULL, ...) [default]            Success [NV]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  No platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  No platform

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.2.8
  ICD loader Profile                              OpenCL 1.2
	NOTE:	your OpenCL library declares to support OpenCL 1.2,
		but it seems to support up to OpenCL 2.1 too.
keith@Darksider:~$ 

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

Keith,

Your output looks like mine. From this, your system sees the opencl libraries just fine and maps all your video cards as well. For some reason, BOINC is not making that link. Very strange. Gonna have to think some more.

---

Greetings All

There is not a lot more I can contribute to this thread that hasnt been said before, except the following which is just for info.

This is the link I use for the NVIDIA drivers

https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa

I am on driver ver 384.87. GTX 980 is recognised with CUDA and OPENCL support

This is the link I use for the BOINC program.

https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/boinc

I am on BOINC 7.6.33

Not much else but have been running solid since I switched back to MINT 18.2 on Linux Kernel 4.10.0-27.

Regards

Keith,

Here is a shot in the dark. Do you have Secure Boot completely disabled in your BIOS?

I had a hardware issue on a freebee Dell machine that was corrected by verifying I had Secure Boot disabled. Turns out, I did not. In my research for that problem, I found others that were able to get hardware and software to cooperate once Secure Boot was disabled.

---

I might have to install the repository 7.6.31 I think and deal with the permission issues. It looks like the sym link is valid in /usr/lib.
Screenshot from 2017-07-22 22-01-54 by Keith Myers, on Flickr

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

Keith,

Here is a shot in the dark. Do you have Secure Boot completely disabled in your BIOS?

I had a hardware issue on a freebee Dell machine that was corrected by verifying I had Secure Boot disabled. Turns out, I did not. In my research for that problem, I found others that were able to get hardware and software to cooperate once Secure Boot was disabled.

Yes, most emphatically. Secure Boot is disabled. It is set for Other OS. ASUS BIOS Boot Options.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

What is the way to verify that Secure Boot is disabled? I am just trusting the setting in the BIOS.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

I might have to install the repository 7.6.31 I think and deal with the permission issues. It looks like the sym link is valid in /usr/lib.
Screenshot from 2017-07-22 22-01-54 by Keith Myers, on Flickr

You need to change the Name to a valid lib, LinkTo won't work, it Has to be named libOpenCL.so
Change the name and try it again.

You need to change the Name to a valid lib, LinkTo won't work, it Has to be named libOpenCL.so
Change the name and try it again.

Just like that ....

Sun 23 Jul 2017 12:27:20 AM PDT |  | log flags: file_xfer, sched_ops, task
Sun 23 Jul 2017 12:27:20 AM PDT |  | Libraries: libcurl/7.47.0 OpenSSL/1.0.2g zlib/1.2.8 libidn/1.32 librtmp/2.3
Sun 23 Jul 2017 12:27:20 AM PDT |  | Data directory: /home/keith/Desktop/BOINC_7.2.47
Sun 23 Jul 2017 12:27:20 AM PDT |  | CUDA: NVIDIA GPU 0: GeForce GTX 970 (driver version unknown, CUDA version 9.0, compute capability 5.2, 4034MB, 3843MB available, 6385 GFLOPS peak)
Sun 23 Jul 2017 12:27:20 AM PDT |  | CUDA: NVIDIA GPU 1: GeForce GTX 970 (driver version unknown, CUDA version 9.0, compute capability 5.2, 4037MB, 3965MB available, 6385 GFLOPS peak)
Sun 23 Jul 2017 12:27:20 AM PDT |  | CUDA: NVIDIA GPU 2: GeForce GTX 970 (driver version unknown, CUDA version 9.0, compute capability 5.2, 4037MB, 3965MB available, 6385 GFLOPS peak)
Sun 23 Jul 2017 12:27:20 AM PDT |  | OpenCL: NVIDIA GPU 0: GeForce GTX 970 (driver version 384.47, device version OpenCL 1.2 CUDA, 4034MB, 3843MB available, 6385 GFLOPS peak)
Sun 23 Jul 2017 12:27:20 AM PDT |  | OpenCL: NVIDIA GPU 1: GeForce GTX 970 (driver version 384.47, device version OpenCL 1.2 CUDA, 4037MB, 3965MB available, 6385 GFLOPS peak)
Sun 23 Jul 2017 12:27:20 AM PDT |  | OpenCL: NVIDIA GPU 2: GeForce GTX 970 (driver version 384.47, device version OpenCL 1.2 CUDA, 4037MB, 3965MB available, 6385 GFLOPS peak)
Sun 23 Jul 2017 12:27:20 AM PDT | SETI@home | Found app_info.xml; using anonymous platform
Sun 23 Jul 2017 12:27:20 AM PDT |  | Host name: Darksider
Sun 23 Jul 2017 12:27:20 AM PDT |  | Processor: 8 AuthenticAMD AMD FX(tm)-8300 Eight-Core Processor [Family 21 Model 2 Stepping 0]
Sun 23 Jul 2017 12:27:20 AM PDT |  | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold
Sun 23 Jul 2017 12:27:20 AM PDT |  | OS: Linux: 4.10.0-27-generic

Thank you very much for the hand-holding and patience with a linux noobie. I really do appreciate everyones help, assistance and suggestions.

BOINC is running on all cylinders now. Now if any of the infrequent and rare AP tasks show up, my computer can crunch them.

The group in this forum are outstanding setizens. BRAVO.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

Greetings

Woohoo Keith, excellent news to hear.

Whats next, getting one of your dual 1070 machines over onto the Cuda special app lol.

Regards
Mark