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[Solved] clinfo reports error -33 of "Global free memory (AMD)"  by amdgpu/pro

Question asked by faylyn101 on Oct 17, 2018
Latest reply on Oct 23, 2018 by faylyn101

Issue Description: [Describe your issue in detail here]

At first, Einstein@Home GPU app encountered immediate failure by OpenCL open error -6 (CL_OUT_OF_HOST_MEMORY)


16:46:13 (32530): [normal]: This Einstein@home App was built at: Jan 16 2017 08:09:16

16:46:13 (32530): [normal]: Start of BOINC application '../../projects/'.


16:46:13 (32530): [debug]: Flags: X64 SSE SSE2 GNUC X86 GNUX86

16:46:13 (32530): [debug]: glibc version/release: 2.27/stable

16:46:13 (32530): [debug]: Set up communication with graphics process.

boinc_get_opencl_ids returned [0x183adf0 , 0x7f2e8c080190]

Using OpenCL platform provided by: Advanced Micro Devices, Inc.

Using OpenCL device "Pitcairn" by: Advanced Micro Devices, Inc.

Max allocation limit: 1345394688

Global mem size: 1805643776

Couldn't create OpenCL command queue (error: -6)!

OpenCL shutdown complete!

initialize_ocl returned error [2013]

OCL context null

OCL queue null

Error generating generic FFT context object [5]

16:46:15 (32530): [CRITICAL]: ERROR: MAIN() returned with error '5'


Then I used clinfo to check any possible incompatibilities:


~$ sudo clinfo

Number of platforms 1

Platform Name AMD Accelerated Parallel Processing

Platform Vendor Advanced Micro Devices, Inc.

Platform Version OpenCL 2.1 AMD-APP (2671.3)

Platform Profile FULL_PROFILE

Platform Extensions cl_khr_icd cl_amd_event_callback cl_amd_offline_devices

Platform Host timer resolution 1ns

Platform Extensions function suffix AMD


Support is emulated in software No

Address bits 32, Little-Endian

Global memory size 2111901696 (1.967GiB)

Global free memory (AMD) <printDeviceInfo:75: get number of CL_DEVICE_GLOBAL_FREE_MEMORY_AMD : error -33>

Global memory channels (AMD) 8

Global memory banks per channel (AMD) 16

Global memory bank width (AMD) 256 bytes



As it may show that this opencl + amdgpu cannot make it to fulfill some old/new-fashion of GPU app.

Then how soon we could have a more correct amdgpu/pro drive?


Thanks for any insightful enlightenment.


Hardware: [Describe the make and model of your: Graphics Card, CPU, Motherboard, RAM, PSU, Display(s), etc.]

$lspci | grep VGA

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn XT [Radeon HD 7870 GHz Edition]

02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn XT [Radeon HD 7870 GHz Edition]


Software: [Describe version or release date of your: Operating System, Game/Application, Drivers, etc.]

Ubuntu 18.04.1,


amdgpu-core 18.30-641594,

Einstein@home BOINC app: Gamma-ray pulsar binary search on GPUs v1.18