System Information
OS: Ubuntu 16.04
Kernel: 4.10 x86_64
GPU: Radeon R9 280x
Driver: amdgpu-pro-16.60-379184 x86_64
Blender Version
Broken: blender-2.78-7359cc1060-linux-glibc219-x86_64
Short description of error
Cycles render over gpu return OpenCL error (-6): CL_OUT_OF_HOST_MEMORY
Exact steps for others to reproduce the error
Attachments
System-info:
This is a bug.
Considering that the same build of Blender works on a different driver, I'm pretty sure that AMDGPU is to blame here, not Blender.
Host memory is system memory, not GPU memory. Either your system ran out of memory or there's a driver bug.
Unless there's some other info you've left out there's nothing we can do, this isn't a bug we can fix in Blender.
Under fglrx the holders of such cards get another error: https://developer.blender.org/T49465
System has 2Gb free RAM and 4Gb swap memory.
Why the default scene uses more than 6Gb memory to render it over amdgpu-pro OpenCL api? Why cycles render over CPU work fine? It is realy not memory leak in cycles engine?
Top output:
@soulfire (vejn) that is interesting and might point to something we can fix. Its a different issue than the one in this report tho.
Could either of you test the split kernel branch and see if thats any better?
@soulfire (vejn) also, since it’s different issue might be better to report it in different task, better to strictly keep one issue per task. ;)
Ok, I have deleted this comment and open here https://developer.blender.org/T50773
No, I haven't tested split kernel branch. I don't know how.
Same here. Blender 2.77 on Ubuntu 16.10 + AMDGPU-PRO OpenCL driver (hybrid installation with Padoka:ppa Mesa display driver).
After starting rendering on GPU it throws CL_OUT_OF_HOST_MEMORY. Try again and blender crashes.
Host Memory: 16GB
GPU: AMD Radeon HD7870, 2GB
This could actually be related to T50968? Sounds *somewhat* similar at least, @Sergey Sharybin (sergey)?
I'm seeing this as well with a Radeon R9 270X (2 GB vRAM), 16 GB of system RAM, and amdgpu 16.60-379184 on Ubuntu 16.04.
I can confirm the same error message with Ubuntu LTS 16.04 + proprietary AMDGPU-PRO Driver 16.6:
Blender 2.78 (sub 4), Commit date: 2017-04-01 13:29, Hash 3bf0026bec bpy.context.scene.cycles.device = 'GPU' F12 -> OpenCL error (-6): CL_OUT_OF_HOST_MEMORY
Additionally Blender then later crashes with a segmentation fault:
OpenCL: Error creating command queue OpenCL error: CL_INVALID_COMMAND_QUEUE in clEnqueueWriteBuffer(cqCommandQueue, CL_MEM_PTR(mem.device_pointer), CL_TRUE, 0, mem.memory_size(), zero, 0, NULL, NULL) OpenCL: failed to initialize device. Writing: /tmp/blender.crash.txt
Crash report:
This could be a driver issue with GCN 1 cards as all cards mentioned in this report are that generation. I cant reproduce this with the cards I have available, and if it is a driver bug there's nothing that we can do anyways. There is a new version of the drivers released recently you guys could try, but we may have to drop support for these cards.
Please see here for more info regarding supported cards: https://wiki.blender.org/index.php/Dev:Source/Render/Cycles/OpenCL
Unfortunately you are right, GCN1 arch ;-(
Even after upgrade to the latest AMD driver still the same issue.
OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: AMD Radeon HD 7700 Series OpenGL core profile version string: 4.5.13474 Core Profile Context 17.10.2 OpenGL core profile shading language version string: 4.50
clinfo 2.1.16.01.12 (mesa), this seems to be a related bug/error:
Address bits 32, Little-Endian Global memory size 624066560 (595.2MiB) Global free memory (AMD) <printDeviceInfo:68: get number of CL_DEVICE_GLOBAL_FREE_MEMORY_AMD : error -33>
Archived for now.
This is it. Setting some environment variables fixes it: https://community.amd.com/thread/233040
This is a bug in the driver not in Blender.