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mtmd: fix Pixtral OOM with large images by capping image_size to 1024 #14326

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Jun 22, 2025
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mtmd: fix Pixtral OOM with large images by capping image_size to 1024 #14326

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3 changes: 3 additions & 0 deletions tools/mtmd/clip.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2211,6 +2211,9 @@ struct clip_model_loader {
{
hparams.rope_theta = 10000.0f;
hparams.warmup_image_size = hparams.patch_size * 8;
// Mistral Small 2506 needs 1024x1024 image size cap to prevent OOM
// ref: https://github.com/ggml-org/llama.cpp/issues/14310
hparams.image_size = 1024;
get_u32(KEY_SPATIAL_MERGE_SIZE, hparams.spatial_merge_size, false);
} break;
case PROJECTOR_TYPE_GEMMA3:
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