From 73f7aacf35ec9b1d0f9de9ddf38af0889f213e99 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Tue, 20 Sep 2016 18:34:49 +0000
Subject: [PATCH] better multigpu

---
 src/convolutional_kernels.cu |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/convolutional_kernels.cu b/src/convolutional_kernels.cu
index 8244792..b8d6478 100644
--- a/src/convolutional_kernels.cu
+++ b/src/convolutional_kernels.cu
@@ -237,8 +237,10 @@
     axpy_ongpu(layer.n, learning_rate/batch, layer.bias_updates_gpu, 1, layer.biases_gpu, 1);
     scal_ongpu(layer.n, momentum, layer.bias_updates_gpu, 1);
 
-    axpy_ongpu(layer.n, learning_rate/batch, layer.scale_updates_gpu, 1, layer.scales_gpu, 1);
-    scal_ongpu(layer.n, momentum, layer.scale_updates_gpu, 1);
+    if(layer.scales_gpu){
+        axpy_ongpu(layer.n, learning_rate/batch, layer.scale_updates_gpu, 1, layer.scales_gpu, 1);
+        scal_ongpu(layer.n, momentum, layer.scale_updates_gpu, 1);
+    }
 
     axpy_ongpu(size, -decay*batch, layer.weights_gpu, 1, layer.weight_updates_gpu, 1);
     axpy_ongpu(size, learning_rate/batch, layer.weight_updates_gpu, 1, layer.weights_gpu, 1);

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