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model : add GroveMoE support (#15510)

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* add GroveMoE support

* remove constexpr that fails on certain compilers

* revert crude scalar div implementation, use cast

* build_attn_inp_kv_unified -> build_attn_inp_kv

* fix build_attn

* re-apply ffn_exps regex changes
This commit is contained in:
Sigbjørn Skjæret
2025-09-25 19:50:28 +02:00
committed by GitHub
parent b05a9d650f
commit 835b2b915c
11 changed files with 451 additions and 4 deletions
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17
src/llama-graph.cpp
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@@ -923,13 +923,26 @@ ggml_tensor * llm_graph_context::build_moe_ffn(
selection_probs = logits;
}
if (arch == LLM_ARCH_GROVEMOE) {
selection_probs = ggml_sigmoid(ctx0, logits); // [n_expert, n_tokens]
cb(selection_probs, "ffn_moe_probs_biased", il);
}
// select experts
ggml_tensor * selected_experts = ggml_top_k(ctx0, selection_probs, n_expert_used); // [n_expert_used, n_tokens]
cb(selected_experts->src[0], "ffn_moe_argsort", il);
cb(selected_experts, "ffn_moe_topk", il);
ggml_tensor * weights = ggml_get_rows(ctx0,
ggml_reshape_3d(ctx0, probs, 1, n_expert, n_tokens), selected_experts); // [1, n_expert_used, n_tokens]
if (arch == LLM_ARCH_GROVEMOE && n_expert != hparams.n_expert) {
// TODO: Use scalar div instead when/if implemented
ggml_tensor * f_sel = ggml_cast(ctx0, selected_experts, GGML_TYPE_F32);
selected_experts = ggml_cast(ctx0, ggml_scale(ctx0, f_sel, 1.0f / float(hparams.n_group_experts)), GGML_TYPE_I32);
probs = ggml_reshape_3d(ctx0, probs, 1, hparams.n_expert, n_tokens);
} else {
probs = ggml_reshape_3d(ctx0, probs, 1, n_expert, n_tokens);
}
ggml_tensor * weights = ggml_get_rows(ctx0, probs, selected_experts); // [1, n_expert_used, n_tokens]
cb(weights, "ffn_moe_weights", il);