topic CL_DEVICE_NOT_AVAILABLE in Intel® oneAPI DPC++/C++ Compiler

CL_DEVICE_NOT_AVAILABLE

WenChung_C_Intel — Mon, 25 Nov 2019 03:04:12 GMT

Hi,

I am trying to install OneAPI beta on local server. System configuration as below:

Xeon 6130 x2

Mem: 24G RDIMM

OS: Linux S2600WFT 4.15.0-70-generic #79~16.04.1-Ubuntu SMP Tue Nov 12 14:01:10 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

GCC: gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609

OpenCL driver: opencl_runtime_16.1.2_x64

Running the vectoradd example, compilation passed, but run the program yield the run time error message as below:

OpenCL API failed. OpenCL API returns: -2 (CL_DEVICE_NOT_AVAILABLE) -2 (CL_DEVICE_NOT_AVAILABLE)

it seemed it can not recognize CPU as OpenCL device, and i don't know which OpenCL driver I should install.

Please advise.

Vincent

Hi Wen Chung,

Kaleem_A_Intel — Mon, 25 Nov 2019 06:25:11 GMT

Hi Wen Chung,

Thanks for reaching out to us.

We are working on this issue and will get back to you.

Kaleem

Hi Vincent,

Varsha_M_Intel — Mon, 25 Nov 2019 22:32:24 GMT

Hi Vincent,

How did you install OpenCL? You do not need to seperately install OpenCL, runtime is part of the oneAPI package. Could you paste your clinfo output here?

-Varsha

Thanks for reply.

WenChung_C_Intel — Tue, 26 Nov 2019 01:00:10 GMT

Thanks for reply.

I did a fresh install on Ubuntu 16.04. then installed OneAPI package. It has CL_DEVICE_NOT_AVAILABLE error so I installed OpenCL runtime from https://software.intel.com/en-us/articles/opencl-drivers , and it is still the same.

clinfo:

vincent@S2600WFT:~/BaseKit-code-samples-master/DPC++Compiler/vector-add$ clinfo
Number of platforms 3
Platform Name Intel(R) OpenCL
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 2.1 LINUX
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd 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_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_khr_il_program cl_intel_exec_by_local_thread cl_intel_vec_len_hint cl_intel_device_partition_by_names cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer
Platform Host timer resolution 1ns
Platform Extensions function suffix INTEL

Platform Name Intel(R) CPU Runtime for OpenCL(TM) Applications
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 2.1 LINUX
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd 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_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_khr_il_program cl_intel_exec_by_local_thread cl_intel_vec_len_hint cl_intel_device_partition_by_names cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer
Platform Host timer resolution 1ns
Platform Extensions function suffix INTEL

Platform Name Intel(R) CPU Runtime for OpenCL(TM) Applications
Number of devices 1
Device Name Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 2.1 (Build 0)
Driver Version 2019.9.9.0
Device OpenCL C Version OpenCL C 2.0
Device Type CPU
Device Profile FULL_PROFILE
Max compute units 64
Max clock frequency 2100MHz
Device Partition (core)
Max number of sub-devices 64
Supported partition types by counts, equally, by names (Intel)
Max work item dimensions 3
Max work item sizes 8192x8192x8192
Max work group size 8192
Preferred work group size multiple 128
Max sub-groups per work group 1
Preferred / native vector sizes
char 1 / 32
short 1 / 16
int 1 / 8
long 1 / 4
half 0 / 0 (n/a)
float 1 / 8
double 1 / 4 (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 No
Round to infinity No
IEEE754-2008 fused multiply-add No
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
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 24911872000 (23.2GiB)
Error Correction support No
Max memory allocation 6227968000 (5.8GiB)
Unified memory for Host and Device Yes
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing Yes
Fine-grained system sharing Yes
Atomics Yes
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Preferred alignment for atomics
SVM 64 bytes
Global 64 bytes
Local 0 bytes
Max size for global variable 65536 (64KiB)
Preferred total size of global vars 65536 (64KiB)
Global Memory cache type Read/Write
Global Memory cache size 262144
Global Memory cache line 64 bytes
Image support Yes
Max number of samplers per kernel 480
Max size for 1D images from buffer 389248000 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 64 bytes
Pitch alignment for 2D image buffers 64 bytes
Max 2D image size 16384x16384 pixels
Max 3D image size 2048x2048x2048 pixels
Max number of read image args 480
Max number of write image args 480
Max number of read/write image args 480
Max number of pipe args 16
Max active pipe reservations 4095
Max pipe packet size 1024
Local memory type Global
Local memory size 32768 (32KiB)
Max constant buffer size 131072 (128KiB)
Max number of constant args 480
Max size of kernel argument 3840 (3.75KiB)
Queue properties (on host)
Out-of-order execution Yes
Profiling Yes
Local thread execution (Intel) Yes
Queue properties (on device)
Out-of-order execution Yes
Profiling Yes
Preferred size 4294967295 (4GiB)
Max size 4294967295 (4GiB)
Max queues on device 4294967295
Max events on device 4294967295
Prefer user sync for interop No
Profiling timer resolution 1ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
Sub-group independent forward progress No
IL version SPIR-V_1.0
SPIR versions 1.2
printf() buffer size 1048576 (1024KiB)
Built-in kernels
Device Available Yes
Compiler Available Yes
Linker Available Yes
Device Extensions cl_khr_icd 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_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_khr_il_program cl_intel_exec_by_local_thread cl_intel_vec_len_hint cl_intel_device_partition_by_names cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer

NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) No platform
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) No platform
clCreateContext(NULL, ...) [default] No platform
clCreateContext(NULL, ...) [other] Success [INTEL]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) Success (1)
Platform Name Intel(R) OpenCL
Device Name Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) No devices found in 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) Success (1)
Platform Name Intel(R) OpenCL
Device Name Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz

Hi Vincent,

Varsha_M_Intel — Tue, 26 Nov 2019 23:18:36 GMT

Hi Vincent,

Could you please uninstall the OpenCL runtime and then run clinfo?
Did you run the oneAPI installer with sudo privileges?

-Varsha

Hi Varsha,

WenChung_C_Intel — Wed, 27 Nov 2019 09:36:14 GMT

Hi Varsha,

yes, I did use root privilege to install.

Please check the new clinfo below: (now the number of platforms become 2 but still can not run)

Number of platforms                               2
Platform Name                                   Intel(R) OpenCL
Platform Vendor                                 Intel(R) Corporation
Platform Version                                OpenCL 2.1 LINUX
Platform Profile                                FULL_PROFILE
Platform Extensions                             cl_khr_icd 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_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_khr_il_program cl_intel_exec_by_local_thread cl_intel_vec_len_hint cl_intel_device_partition_by_names cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer
Platform Host timer resolution                  1ns
Platform Extensions function suffix             INTEL

Platform Name                                   Intel(R) FPGA Emulation Platform for OpenCL(TM)
Platform Vendor                                 Intel(R) Corporation
Platform Version                                OpenCL 1.0 Intel(R) FPGA SDK for OpenCL(TM), Version 19.2
Platform Profile                                EMBEDDED_PROFILE
Platform Extensions                             cl_khr_icd cl_khr_byte_addressable_store cl_intel_fpga_host_pipe cles_khr_int64 cl_khr_il_program
Platform Extensions function suffix             IntelFPGA

Platform Name                                   Intel(R) OpenCL
Number of devices                                 1
Device Name                                     Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz
Device Vendor                                   Intel(R) Corporation
Device Vendor ID                                0x8086
Device Version                                  OpenCL 2.1 (Build 0)
Driver Version                                  2019.9.9.0
Device OpenCL C Version                         OpenCL C 2.0
Device Type                                     CPU
Device Profile                                  FULL_PROFILE
Max compute units                               64
Max clock frequency                             2100MHz
Device Partition                                (core)
    Max number of sub-devices                     64
    Supported partition types                     by counts, equally, by names (Intel)
Max work item dimensions                        3
Max work item sizes                             8192x8192x8192
Max work group size                             8192
Preferred work group size multiple              128
Max sub-groups per work group                   1
Preferred / native vector sizes
    char                                                 1 / 32
    short                                                1 / 16
    int                                                  1 / 8
    long                                                 1 / 4
    half                                                 0 / 0        (n/a)
    float                                                1 / 8
    double                                               1 / 4        (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                                 No
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations No
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                              24911872000 (23.2GiB)
Error Correction support                        No
Max memory allocation                           6227968000 (5.8GiB)
Unified memory for Host and Device              Yes
Shared Virtual Memory (SVM) capabilities        (core)
    Coarse-grained buffer sharing                 Yes
    Fine-grained buffer sharing                   Yes
    Fine-grained system sharing                   Yes
    Atomics                                       Yes
Minimum alignment for any data type             128 bytes
Alignment of base address                       1024 bits (128 bytes)
Preferred alignment for atomics
    SVM                                           64 bytes
    Global                                        64 bytes
    Local                                         0 bytes
Max size for global variable                    65536 (64KiB)
Preferred total size of global vars             65536 (64KiB)
Global Memory cache type                        Read/Write
Global Memory cache size                        262144
Global Memory cache line                        64 bytes
Image support                                   Yes
    Max number of samplers per kernel             480
    Max size for 1D images from buffer            389248000 pixels
    Max 1D or 2D image array size                 2048 images
    Base address alignment for 2D image buffers   64 bytes
    Pitch alignment for 2D image buffers          64 bytes
    Max 2D image size                             16384x16384 pixels
    Max 3D image size                             2048x2048x2048 pixels
    Max number of read image args                 480
    Max number of write image args                480
    Max number of read/write image args           480
Max number of pipe args                         16
Max active pipe reservations                    4095
Max pipe packet size                            1024
Local memory type                               Global
Local memory size                               32768 (32KiB)
Max constant buffer size                        131072 (128KiB)
Max number of constant args                     480
Max size of kernel argument                     3840 (3.75KiB)
Queue properties (on host)
    Out-of-order execution                        Yes
    Profiling                                     Yes
    Local thread execution (Intel)                Yes
Queue properties (on device)
    Out-of-order execution                        Yes
    Profiling                                     Yes
    Preferred size                                4294967295 (4GiB)
    Max size                                      4294967295 (4GiB)
Max queues on device                            4294967295
Max events on device                            4294967295
Prefer user sync for interop                    No
Profiling timer resolution                      1ns
Execution capabilities
    Run OpenCL kernels                            Yes
    Run native kernels                            Yes
    Sub-group independent forward progress        No
    IL version                                    SPIR-V_1.0
    SPIR versions                                 1.2
printf() buffer size                            1048576 (1024KiB)
Built-in kernels
Device Available                                Yes
Compiler Available                              Yes
Linker Available                                Yes
Device Extensions                               cl_khr_icd 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_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_khr_il_program cl_intel_exec_by_local_thread cl_intel_vec_len_hint cl_intel_device_partition_by_names cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer

Platform Name                                   Intel(R) FPGA Emulation Platform for OpenCL(TM)
Number of devices                                 1
Device Name                                     Intel(R) FPGA Emulation Device
Device Vendor                                   Intel(R) Corporation
Device Vendor ID                                0x1172
Device Version                                  OpenCL 1.0
Driver Version                                  2019.8.9.0
Device OpenCL C Version                         OpenCL C 1.0
Device Type                                     Accelerator
Device Profile                                  EMBEDDED_PROFILE
Max compute units                               64
Max clock frequency                             2100MHz
Max work item dimensions                        3
Max work item sizes                             67108864x67108864x67108864
Max work group size                             67108864
Preferred work group size multiple              <getWGsizes:494: create context : error -2>
Preferred / native vector sizes
    char                                                 1 / 32
    short                                                1 / 16
    int                                                  1 / 8
    long                                                 1 / 4
    half                                                 0 / 0        (n/a)
    float                                                1 / 8
    double                                               1 / 4        (n/a)
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                                 No
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations No
Double-precision Floating-point support         (n/a)
Address bits                                    64, Little-Endian
Global memory size                              24911872000 (23.2GiB)
Error Correction support                        No
Max memory allocation                           6227968000 (5.8GiB)
Unified memory for Host and Device              Yes
Minimum alignment for any data type             128 bytes
Alignment of base address                       1024 bits (128 bytes)
Global Memory cache type                        Read/Write
Global Memory cache size                        262144
Global Memory cache line                        64 bytes
Image support                                   No
Local memory type                               Global
Local memory size                               262144 (256KiB)
Max constant buffer size                        131072 (128KiB)
Max number of constant args                     480
Max size of kernel argument                     3840 (3.75KiB)
Queue properties
    Out-of-order execution                        Yes
    Profiling                                     Yes
Profiling timer resolution                      1ns
Execution capabilities
    Run OpenCL kernels                            Yes
    Run native kernels                            Yes
Device Available                                Yes
Compiler Available                              Yes
Device Extensions                               cl_khr_icd cl_khr_byte_addressable_store cl_intel_fpga_host_pipe cles_khr_int64 cl_khr_il_program

NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) No platform
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   No platform
clCreateContext(NULL, ...) [default]            No platform
clCreateContext(NULL, ...) [other]              Success [INTEL]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) Success (1)
    Platform Name                                 Intel(R) OpenCL
    Device Name                                   Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) No devices found in 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) Success (1)
    Platform Name                                 Intel(R) OpenCL
    Device Name                                   Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz

Hi Vincent,

Varsha_M_Intel — Wed, 27 Nov 2019 15:50:10 GMT

Hi Vincent,

This is strange. Also, did you source the oneAPI env or dpcpp env?

Thanks,
Varsha

Hi Varsha,

WenChung_C_Intel — Thu, 28 Nov 2019 01:02:13 GMT

Hi Varsha,

I use "source setvars.sh" for the environment.

Further, I used strace to check and it seemed the program couldn't find OpenCL library. is there any environment variables I have to set?

thanks

trace.txt

execve("./vector-add.exe", ["./vector-add.exe"], [/* 76 vars */]) = 0
brk(NULL)                               = 0x767000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb5a2700000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/opt/intel/inteloneapi/vpl/latest/lib/tls/x86_64/libOpenCL.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/opt/intel/inteloneapi/vpl/latest/lib/tls/x86_64", 0x7ffe7717ac20) = -1 ENOENT (No such file or directory)
open("/opt/intel/inteloneapi/vpl/latest/lib/tls/libOpenCL.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/opt/intel/inteloneapi/vpl/latest/lib/tls", 0x7ffe7717ac20) = -1 ENOENT (No such file or directory)
open("/opt/intel/inteloneapi/vpl/latest/lib/x86_64/libOpenCL.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/opt/intel/inteloneapi/vpl/latest/lib/x86_64", 0x7ffe7717ac20) = -1 ENOENT (No such file or directory)
open("/opt/intel/inteloneapi/vpl/latest/lib/libOpenCL.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/opt/intel/inteloneapi/vpl/latest/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
…...

I got it running by re

WenChung_C_Intel — Fri, 06 Dec 2019 07:12:42 GMT

I got it running by re-installing the ubuntu 18.04. the compiler/runtime all working.

Please take sometime to check 16.04 to see if any package is missing.

Best regards,

Vincent

Re:CL_DEVICE_NOT_AVAILABLE

MaheshB_Intel — Mon, 31 May 2021 07:24:59 GMT

Hi,

Thanks for the confirmation!

As this issue has been resolved, we will no longer respond to this thread.

If you require any additional assistance from Intel, please start a new thread.

Any further interaction in this thread will be considered community only.

Have a Good day.

Thanks & Regards,

-Mahesh