cuda memory_error ai_generated true

CUDA error: map buffer object failed (cudaErrorMapBufferObjectFailed)

ID: cuda/map-buffer-object-failed

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78%Fix Rate
82%Confidence
50Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
12 active — — —

Root Cause

CUDA failed to map a buffer object (often OpenGL/DirectX interop or unified memory) into the GPU address space. Caused by resource exhaustion, invalid buffer handles, or CUDA-graphics interop not properly registered.

generic

Workarounds

  1. 85% success Ensure graphics resource is registered before mapping: cudaGraphicsGLRegisterBuffer 
    Call cudaGraphicsGLRegisterBuffer(&resource, buffer, flags) before cudaGraphicsMapResources
  2. 82% success Unmap and release previous mappings before creating new ones 
    cudaGraphicsUnmapResources(1, &resource, stream) before remapping. Ensure proper cleanup in error paths.
  3. 80% success Use cudaMallocManaged for unified memory instead of explicit mapping 
    Replace explicit buffer mapping with unified memory: cudaMallocManaged(&ptr, size) which handles mapping automatically

Dead Ends

Common approaches that don't work:

  1. Retry the mapping operation immediately 85% fail

    If the buffer handle is invalid or resources are exhausted, retrying without fixing the cause will always fail

  2. Increase GPU memory to fix mapping failure 70% fail

    Map failures are usually about address space or interop registration, not raw memory availability

Error Chain

Leads to:
Frequently confused with: