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Title: ROC-RK3399-PC - clinfo shows no devices [Print This Page]

Author: loopdavid Time: 1/4/2019 13:27
Title: ROC-RK3399-PC - clinfo shows no devices
Using the ubuntu image on the downloads page for the ROC-RK3399-PC

Running the command "clinfo" should show the OpenCL information about the Mali GPU, however, it shows
Number of platforms 0

How can OpenCL support be enabled?

Author: penguin Time: 1/4/2019 15:14
1. git clone https://github.com/simleb/clinfo.git
2. apt install opencl-headers
3. cd clinfo;make;make install
4. cd /usr/lib/aarch64-linux-gnu/ ; ln -sf libOpenCL.so libMali.so.7.0
5. ./clinfo

Author: loopdavid Time: 1/5/2019 13:12
Thanks for getting back to me.

I have done the above, but now it gives a segmentation fault.

root@firefly:~# clinfo
Platform #0
  Name:                               ARM Platform
  Version:                            OpenCL 1.2 v1.r14p0-01rel0-git(966ed26).f44c85cb3d2ceb87e8be88e7592755c3

  Device #0
Name:                               Mali-T860
Type:                               GPU
Version:                            OpenCL 1.2 v1.r14p0-01rel0-git(966ed26).f44c85cb3d2ceb87e8be88e7592755c3
Global memory size:                3 GB 772 MB 664 kB
Local memory size:                32 kB
Max work group size:                256
Max work item sizes:                (256, 256, 256)
Segmentation fault (core dumped)

Author: penguin Time: 1/5/2019 15:47
Just a print bug
- buffer_size += (dims[i] > 0 ? lrint(log10(dims[i])) + 1 : 1) + 2;
+ buffer_size += (dims[i] > 0 ? lrint(log10(dims[i])) + 2 : 1) * ndims + 2;

Author: gjames@smu.ca Time: 1/30/2019 02:00
Last edited by gjames@smu.ca In 1/30/2019 02:07 Editor

Tried it but got make error

cc -Wall -O3 -std=c99 -o clinfo clinfo.c  -lOpenCL -lm
clinfo.c: In function ‘printStringValue’:
clinfo.c:642:11: warning: format ‘%s’ expects argument of type ‘char *’, but argument 2 has type ‘void *’ [-Wformat=]
  printf("%s\n", value);
      ~^
      %p
clinfo.c: In function ‘printUlong’:
clinfo.c:696:22: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘cl_ulong {aka const long unsigned int}’ [-Wformat=]
  sprintf(buffer, "%llu", num);
               ~~~^
               %lu

If I run clinfo iget
clinfo: Cannot get the number of OpenCL platforms available.

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