From 9dee543bedaed8419957afaed3a64b1ab5fa3a21 Mon Sep 17 00:00:00 2001
From: Guenther Schmuelling <guschmue@microsoft.com>
Date: Mon, 15 Jan 2024 18:40:38 -0800
Subject: [PATCH] fix gemm beta for fp16 (#19153)

per onnx spec beta is always fp32 so we need to cast it
---
 js/web/lib/wasm/jsep/webgpu/ops/gemm.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/web/lib/wasm/jsep/webgpu/ops/gemm.ts b/js/web/lib/wasm/jsep/webgpu/ops/gemm.ts
index 30754c8441..a0d4021516 100644
--- a/js/web/lib/wasm/jsep/webgpu/ops/gemm.ts
+++ b/js/web/lib/wasm/jsep/webgpu/ops/gemm.ts
@@ -100,8 +100,8 @@ const createGemmProgramInfo = (inputs: readonly TensorView[], attributes: GemmAt
     ${calculateAlpha}
     ${(() => {
       if (c != null) {
-        return `let cOffset = ${c.broadcastedIndicesToOffset('vec2(m, n)', output)}; value += uniforms.beta * ${
-            c.getByOffset('cOffset')};`;
+        return `let cOffset = ${c.broadcastedIndicesToOffset('vec2(m, n)', output)}; value += ${
+            dataType}(uniforms.beta) * ${c.getByOffset('cOffset')};`;
       }
       return '';
     })()}