From: Piotr Wilkin (ilintar) <redacted>
Date: Thu, 20 Nov 2025 10:58:21 +0000 (+0100)
Subject: ggml : Fix transposed SOLVE_TRI result (llama/17323)
X-Git-Tag: upstream/0.9.4.395~140
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=48516fdb2325be95078fb7ec4582432cf327c0c0;p=pkg%2Fggml%2Fsources%2Fggml

ggml : Fix transposed SOLVE_TRI result (llama/17323)

* Did someone transpose the SOLVE_TRI result matrix? Perhaps...

* Update ggml/src/ggml-cpu/ops.cpp

Co-authored-by: Sigbjørn Skjæret <redacted>

* Update ggml/src/ggml-cpu/ops.cpp

Co-authored-by: Sigbjørn Skjæret <redacted>

---------

Co-authored-by: Sigbjørn Skjæret <redacted>
---

diff --git a/src/ggml-cpu/ops.cpp b/src/ggml-cpu/ops.cpp
index b6209588..41e89d83 100644
--- a/src/ggml-cpu/ops.cpp
+++ b/src/ggml-cpu/ops.cpp
@@ -9696,13 +9696,12 @@ static void ggml_compute_forward_solve_tri_f32(const struct ggml_compute_params
         for (int64_t i00 = 0; i00 < n; ++i00) {
             float sum = 0.0f;
             for (int64_t t = 0; t < i00; ++t) {
-                sum += A_batch[i00 * n + t] * X_batch[i01 * n + t];
+                sum += A_batch[i00 * n + t] * X_batch[t * k + i01];
             }
 
             const float diag = A_batch[i00 * n + i00];
             GGML_ASSERT(diag != 0.0f && "Zero diagonal in triangular matrix");
-
-            X_batch[i01 * n + i00] = (B_batch[i00 * k + i01] - sum) / diag;
+            X_batch[i00 * k + i01] = (B_batch[i00 * k + i01] - sum) / diag;
         }
     }
 }