Memory allocation probelms #85985
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Reference: blender/blender#85985
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System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics cards: GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71 , GeForce GTX 1070ti NVIDIA
Processor: AMD Ryzen TH 2950X 16-core
RAM: 32 GB
VRAM : 8 GB for 2080 , 8 GB for 1070ti
Blender Version
Broken: version: 2.92.0 Release Candidate, branch: master, commit date: 2021-02-19 18:02, hash:
b1142858d4
Worked: (newest version of Blender that worked as expected)
Short description of error
Well , I actually tried another scene other than this one which is 2.92 splash screen scene , and Optix was working fine with RTX 2080 even if scenes are huge and dense , it works like charm , in blender 2.91 in huge scenes RTX 2080 super and 1070ti working fine till things go out of hand and memory is out , which I was fixing it by only disabling 1070ti and it works with no problem
but now even if I disable 1070ti on 2.92 it doesn't work , and gives me an error message I will describe in steps below
Exact steps for others to reproduce the error
1.1 Open a scene that was rendering fine using RTX 2080 super alone using Optix in blender 2.91 but with 1070ti and AMD Ryzen TH 2950x enabled in 2.92
1.2 Hit render
1.3 Error message :Failed to create CUDA context (Out of memory)
2.1 Disable 1070ti from Cycles Optix render devices and hit render
2.2 Error message :Failed to create CUDA context (Out of memory)
3.1 Disable CPU (RTX 2080 only now enabled) and hit render
3.2 Error message :OPTIX_ERROR_INVALID_VALUE in optixAccelBuild(context, NULL, &options, &build_input, 1, temp_mem.device_pointer, sizes.tempSizeInBytes, out_data.device_pointer, sizes.outputSizeInBytes, &out_handle, background ? &compacted_size_prop : NULL, background ? 1 : 0) (device_optix.cpp:1208)Out of memory in cuMemFree(mem.device_pointer) (device_cuda_impl.cpp:975)
0.1 Trying CPU rendering in optix by disabling RTX 2080 and 1070 ti and just leave AMD Ryzen 2950x
0.2 Worked !
Trying 2.92 splash screen scene
4.1 open file blender 2.blend
4.2 Disable 1070ti
4.3 hit render
4.4 CUDA_ERROR_OUT_OF_MEMORY in cuMemAlloc(&out_data, sizes.outputSizeInBytes) (device_optix.cpp:1140)
it seems that I find different messages but all related to memory in the end sometimes an error message mentions parallel error or something like that , but can't get it again
#86047 was marked as duplicate of this issue
Added subscriber: @Basarchitects
Changed status from 'Needs Triage' to: 'Confirmed'
Added subscribers: @Renderbicks, @rboxman
This issue was referenced by blender/cycles@5d6104cde3
This issue was referenced by
f4f8b6dde3
Changed status from 'Confirmed' to: 'Resolved'