llama.cpp

bf539602 - qwen4exp: give the PLE conv history its own mirrored recurrent row

qwen4exp: give the PLE conv history its own mirrored recurrent row n_embd_r() reserved n_conv + ple_conv_state() so that one cache_r_l row could carry both the delta-net conv state and the PLE dilated conv history, but the QWEN4EXP arm of get_split_segments only described n_conv. Under -sm tensor the segment sum came up short by ple_conv_state() and llama_memory_recurrent construction aborted in ggml_backend_meta_alloc_ctx_tensors_from_buft. Widening the segment list is not the fix. The Meta backend propagates a view's split descriptor from its parent unchanged, so a view of one sub-range of a split axis is sized as the whole row on every device; declaring the PLE tail as a second segment merely moves the abort to "shape mismatch for VIEW" at graph allocation. The two histories also want opposite policies: the delta-net state is split by head to match wqkv and ssm_conv1d, while per_layer_tok_embd, ple_conv1d and ple_norm_conv are all mirrored, so every device computes the whole dilated conv and needs the whole history. One tensor cannot be both, and the split state has no per-segment mirroring. Move the PLE history into its own cache_ple_r_l%d row, mark it MIRRORED, and return n_embd_r() to n_conv. The row is allocated only on layers where is_ple holds, so mirroring one 92160-element row per device replaces a 92160-element tail on all 36 recurrent rows: the recurrent R footprint drops rather than grows. build_conv_state_at now takes its width from the tensor it was handed and keys its gather on that tensor, which also drops a cont of a strided view.