llama.cpp

1caf6c57 - llama: give the qwen4exp full memory context its indexer cache

llama: give the qwen4exp full memory context its indexer cache graph_reserve() walks a full memory context, and qwen4exp builds its sparse attention only when the context exposes an indexer cache. the full-context constructor left ctx_idx null, so the reserved worst case was the dense fallback: a smaller graph than the one decode executes. ggml-alloc then had to grow the compute buffer on the first decode, past the size reported at load. with -np 4 -c 32768 -fa on -ctk q8_0 -ctv q8_0 on an IQ1_S qwen4exp, the reserved CUDA0 buffer was 217.00 MiB against 275.71 MiB actually used, and CUDA_Host 42.31 MiB against 191.14 MiB. reserving the sparse graph makes both match exactly, in unified and non-unified cache mode. Co-authored-by: Pascal <admin@serveurperso.com> Assisted-by: Claude