OpenCL Number of platforms 0

noahw — Mon, 24 Mar 2025 19:16:25 GMT

I'm using Layerscape LS1028ARDB, LSDK v21.08, kernel 5.10.35.

I am trying to make sure my OpenCV application is using OpenCL.

I run the following:

$ cat /boot/config-5.15.0-1007-ls | grep MXC_GPU_VIV

CONFIG_MXC_GPU_VIV=y

It looks like use of GPU should be enabled in my kernel build.

However, when I run clinfo, I get

Number of platforms 0

When I run dmesg | grep -i galcore I see:

[ 3.750350] galcore f0c0000.gpu: Adding to iommu group 14
[ 3.755946] Galcore version 6.4.3.p2.336687

Am I missing something here?

Re: OpenCL Number of platforms 0

yipingwang — Mon, 07 Apr 2025 09:48:36 GMT

I downloaded LSDK 21.08 pre-built images

$ wget https://www.nxp.com/lgfiles/sdk/lsdk2108/firmware_ls1028ardb_sdboot.img

$ wget https://www.nxp.com/lgfiles/sdk/lsdk2108/boot_LS_arm64_lts_5.10.tgz

$ wget https://www.nxp.com/lgfiles/sdk/lsdk2108/rootfs_lsdk2108_ubuntu_desktop_arm64.tgz

Deploy them to SD card.

$ flex-installer -i pf -d /dev/sdb

$ flex-installer -b boot_LS_arm64_lts_5.10.tgz -f firmware_ls1028ardb_sdboot.img -r rootfs_lsdk2108_ubuntu_desktop_arm64.tgz -d /dev/sdb

Note:/dev/sdb is SD device name on the host PC.

Boot from SD card on LS1028ARDB, I got the following information.

root@localhost:~# apt-get install clinfo

root@localhost:~# clinfo
clinfo: /usr/lib/libOpenCL.so.1: no version information available (required by clinfo)
Number of platforms 1
Platform Name Vivante OpenCL Platform
Platform Vendor Vivante Corporation
Platform Version OpenCL 1.2 V6.4.3.p2.336687
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix viv

Platform Name Vivante OpenCL Platform
Number of devices 1
Device Name Vivante OpenCL Device GC7000UL.6202.0000
Device Vendor Vivante Corporation
Device Vendor ID 0x564956
Device Version OpenCL 1.2
Driver Version OpenCL 1.2 V6.4.3.p2.336687
Device OpenCL C Version OpenCL C 1.2
Device Type GPU
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 1
Max clock frequency 600MHz
Device Partition (core)
Max number of sub-devices 0
Supported partition types (n/a)
Supported affinity domains (n/a)
Max work item dimensions 3
Max work item sizes 512x512x512
Max work group size 512
Preferred work group size multiple 8
Preferred / native vector sizes
char 4 / 4
short 4 / 4
int 4 / 4
long 4 / 4
half 0 / 0 (cl_khr_fp16)
float 4 / 4
double 0 / 0 (n/a)
Half-precision Floating-point support <printDeviceInfo:68: get CL_DEVICE_HALF_FP_CONFIG : error -30>
Single-precision Floating-point support (core)
Denormals No
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
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 32, Little-Endian
Global memory size 268435456 (256MiB)
Error Correction support Yes
Max memory allocation 134217728 (128MiB)
Unified memory for Host and Device Yes
Minimum alignment for any data type 128 bytes
Alignment of base address 2048 bits (256 bytes)
Global Memory cache type Read/Write
Global Memory cache size 16384 (16KiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 65536 pixels
Max 1D or 2D image array size 8192 images
Max 2D image size 8192x8192 pixels
Max 3D image size 8192x8192x8192 pixels
Max number of read image args 128
Max number of write image args 8
Local memory type Global
Local memory size 32768 (32KiB)
Max number of constant args 9
Max constant buffer size 65536 (64KiB)
Max size of kernel argument 1024
Queue properties
Out-of-order execution Yes
Profiling Yes
Prefer user sync for interop Yes
Profiling timer resolution 1000ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
printf() buffer size 1048576 (1024KiB)
Built-in kernels (n/a)
Device Extensions cl_khr_byte_addressable_store cl_khr_gl_sharing cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics

NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) No platform
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [viv]
clCreateContext(NULL, ...) [default] Success [viv]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
Platform Name Vivante OpenCL Platform
Device Name Vivante OpenCL Device GC7000UL.6202.0000
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
Platform Name Vivante OpenCL Platform
Device Name Vivante OpenCL Device GC7000UL.6202.0000
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 Vivante OpenCL Platform
Device Name Vivante OpenCL Device GC7000UL.6202.0000

Re: OpenCL Number of platforms 0

noahw — Fri, 11 Apr 2025 00:11:47 GMT

Thanks, it was because I needed the desktop Ubuntu image instead of main.

topic OpenCL Number of platforms 0 in Layerscape

OpenCL Number of platforms 0

Re: OpenCL Number of platforms 0

Re: OpenCL Number of platforms 0