llama : fix parallel processing for plamo2 (ggml-org#14716)

Author: mitmul

src/llama-model.cpp

@@ -15763,6 +15763,7 @@ struct llm_build_plamo2 : public llm_graph_context_mamba {
         cb(zx, "mamba_in_proj", il);
         // {8192, 5, 1, 1} -> {8192, 1, 5, 1}
         zx = ggml_permute(ctx0, zx, 0, 2, 1, 3);
+        zx = ggml_cont(ctx0, zx);
         zx = ggml_reshape_4d(ctx0, zx, head_dim * 2, n_heads, n_seq_tokens, n_seqs);
         cb(zx, "mamba_in_proj_out", il);
 
@@ -15780,7 +15781,6 @@ struct llm_build_plamo2 : public llm_graph_context_mamba {
         // conv1d
         {
             // => {d_conv - 1 + n_seq_tokens, d_inner, n_seqs}
-            x = ggml_view_2d(ctx0, x, d_inner, n_seq_tokens * n_seqs, d_inner * x->nb[0], 0);
             ggml_tensor * conv_x = ggml_concat(ctx0, conv, ggml_transpose(ctx0, x), 0);
             cb(conv_x, "mamba_conv1d_input", il);