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reject CPY with quantized destination as unsupported #283

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Merged
ravi9 merged 1 commit into from
Aug 12, 2026
Merged

reject CPY with quantized destination as unsupported #283

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4 changes: 4 additions & 0 deletions ggml/src/ggml-openvino/ggml-openvino.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1173,6 +1173,10 @@ static bool is_op_unsupported_case(const ggml_tensor * op) {
// GGML_LOG_WARN("OpenVINO backend does not support CPY with non-contiguous data or bf16 types\n");
return true;
}
// CPY to a quantized destination (e.g. f32 -> q4_0) is numerically unstable with OpenVINO backend.
if (ggml_is_quantized(op->type)) {
return true;
}
if (ggml_nelements(op->src[0]) != ggml_nelements(op->src[1])) {
return true;
}
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