Using only one GPU will render successfully, but multiple GPUs fails to render. #70341

New Issue

Naoki Mochizuki · 2019-09-29T04:14:02+02:00

Naoki Mochizuki commented

2019-09-29 04:14:02 +02:00

System Information
Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce RTX 2070 and RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: f6cb5f5449
Worked: (optional)

Short description of error
When I render attached .blend file by Cycles withone GPU (RTX 2070), then rendering will successfully done if the other GPU (RTX 2080) is removed from my motherboard.
If I render it by Cycles with multiple GPUs (Geforce RTX 2070 and 2080), the following error occurs and Blender fails to render.

CUDA error at cuCtxCreate: Out of memory

Refer to the Cycles GPU rendering documentation for possible solutions:
https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html

CUDA error: Invalid value in cuCtxDestroy(cuContext), line 326
CUDA error: Out of memory in mem_alloc_result, line 861

Refer to the Cycles GPU rendering documentation for possible solutions:
https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html

CUDA error: Out of memory in cuModuleGetGlobal(&cumem, &cubytes, cuModule, bind_name.c_str()), line 1068
CUDA error: Out of memory in cuMemcpyHtoD(cumem, (void *)&ptr, cubytes), line 1078
CUDA error: Out of memory in mem_alloc_result, line 861

Refer to the Cycles GPU rendering documentation for possible solutions:
https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html

CUDA error: Out of memory in cuModuleGetGlobal(&cumem, &cubytes, cuModule, bind_name.c_str()), line 1068
CUDA error: Out of memory in cuMemcpyHtoD(cumem, (void *)&ptr, cubytes), line 1078
CUDA error: Out of memory in mem_alloc_result, line 861
CUDA error: Out of memory in cuModuleGetGlobal(&cumem, &cubytes, cuModule, bind_name.c_str()), line 1068
CUDA error: Out of memory in cuMemcpyHtoD(cumem, (void *)&ptr, cubytes), line 1078
CUDA error: Out of memory in mem_alloc_result, line 861
CUDA error: Out of memory in cuModuleGetGlobal(&cumem, &cubytes, cuModule, bind_name.c_str()), line 1068
CUDA error: Out of memory in cuMemcpyHtoD(cumem, (void *)&ptr, cubytes), line 1078
Error: CUDA error at cuCtxCreate: Out of memory

But why multiple GPUs (RTX 2070 and 2080) fails to render it, though using only one GPU (RTX 2070) will render it successfully ?
And half of GPUs memories were used in the rendering (this was confirmed by watching task managers), I think this error is due to using multiple GPUs.

Exact steps for others to reproduce the error
Render by Cycles attached .blend file with RTX 2070 only (RTX 2080 must be removed from your motherboard), which will be successfully done.
Connect RTX 2080 and render it by Cycles with multiple GPUs, which fails to render it.truncated_dodeca.blend

**System Information** Operating system: Windows-10-10.0.17763 64 Bits Graphics card: GeForce **RTX 2070 and RTX 2080**/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30 **Blender Version** Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: `f6cb5f5449` Worked: (optional) **Short description of error** When I render attached .blend file by Cycles with**one GPU (RTX 2070)**, then rendering will successfully done **if the other GPU (RTX 2080) is removed from my motherboard**. If I render it by Cycles with **multiple GPUs (Geforce RTX 2070 and 2080)**, the following error occurs and Blender fails to render. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CUDA error at cuCtxCreate: Out of memory Refer to the Cycles GPU rendering documentation for possible solutions: https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html CUDA error: Invalid value in cuCtxDestroy(cuContext), line 326 CUDA error: Out of memory in mem_alloc_result, line 861 Refer to the Cycles GPU rendering documentation for possible solutions: https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html CUDA error: Out of memory in cuModuleGetGlobal(&cumem, &cubytes, cuModule, bind_name.c_str()), line 1068 CUDA error: Out of memory in cuMemcpyHtoD(cumem, (void *)&ptr, cubytes), line 1078 CUDA error: Out of memory in mem_alloc_result, line 861 Refer to the Cycles GPU rendering documentation for possible solutions: https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html CUDA error: Out of memory in cuModuleGetGlobal(&cumem, &cubytes, cuModule, bind_name.c_str()), line 1068 CUDA error: Out of memory in cuMemcpyHtoD(cumem, (void *)&ptr, cubytes), line 1078 CUDA error: Out of memory in mem_alloc_result, line 861 CUDA error: Out of memory in cuModuleGetGlobal(&cumem, &cubytes, cuModule, bind_name.c_str()), line 1068 CUDA error: Out of memory in cuMemcpyHtoD(cumem, (void *)&ptr, cubytes), line 1078 CUDA error: Out of memory in mem_alloc_result, line 861 CUDA error: Out of memory in cuModuleGetGlobal(&cumem, &cubytes, cuModule, bind_name.c_str()), line 1068 CUDA error: Out of memory in cuMemcpyHtoD(cumem, (void *)&ptr, cubytes), line 1078 Error: CUDA error at cuCtxCreate: Out of memory ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ But **why multiple GPUs (RTX 2070 and 2080) fails to render it, though using only one GPU (RTX 2070) will render it successfully ?** And half of GPUs memories were used in the rendering (this was confirmed by watching task managers), I think this error is due to using multiple GPUs. ![error.png](https://archive.blender.org/developer/F7779365/error.png) **Exact steps for others to reproduce the error** Render by Cycles attached .blend file with RTX 2070 only (**RTX 2080 must be removed from your motherboard**), which will be successfully done. Connect RTX 2080 and render it by Cycles with multiple GPUs, which fails to render it.[truncated_dodeca.blend](https://archive.blender.org/developer/F7779148/truncated_dodeca.blend)

Naoki Mochizuki commented

2019-09-29 04:14:02 +02:00

Added subscriber: @tamaki_py

Naoki Mochizuki commented

2019-09-29 10:11:29 +02:00

Changed status from 'Open' to: 'Resolved'

Naoki Mochizuki closed this issue

2019-09-29 10:11:29 +02:00

Naoki Mochizuki self-assigned this 2019-09-29 10:11:29 +02:00

Naoki Mochizuki commented

2019-09-29 10:11:29 +02:00

This was probably improved by installing a NDIVIA studio driver (not a game play driver).

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Using only one GPU will render successfully, but multiple GPUs fails to render. #70341