From 153705226d8ca746478b69eeac9bc854766daa11 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Tue, 27 Jan 2015 21:31:06 +0000
Subject: [PATCH] Bias updates bug fix
---
src/convolutional_kernels.cu | 18 ++++++++++++------
1 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/src/convolutional_kernels.cu b/src/convolutional_kernels.cu
index 6461aff..eaa4161 100644
--- a/src/convolutional_kernels.cu
+++ b/src/convolutional_kernels.cu
@@ -32,7 +32,7 @@
{
__shared__ float part[BLOCK];
int i,b;
- int filter = (blockIdx.x + blockIdx.y*gridDim.x);
+ int filter = blockIdx.x;
int p = threadIdx.x;
float sum = 0;
for(b = 0; b < batch; ++b){
@@ -52,8 +52,7 @@
{
int size = convolutional_out_height(layer)*convolutional_out_width(layer);
-
- learn_bias<<<cuda_gridsize(layer.n), BLOCK>>>(layer.batch, layer.n, size, layer.delta_gpu, layer.bias_updates_gpu);
+ learn_bias<<<layer.n, BLOCK>>>(layer.batch, layer.n, size, layer.delta_gpu, layer.bias_updates_gpu);
check_error(cudaPeekAtLastError());
}
@@ -96,9 +95,6 @@
gemm_ongpu(0,0,m,n,k,1.,a,k,b,n,1.,c+i*m*n,n);
}
activate_array_ongpu(layer.output_gpu, m*n*layer.batch, layer.activation);
- cuda_pull_array(layer.output_gpu, layer.output, m*n*layer.batch);
- //for(i = 0; i < m*n*layer.batch; ++i) printf("%f, ", layer.output[i]);
- //printf("\n");
}
extern "C" void backward_convolutional_layer_gpu(convolutional_layer layer, float *in, float *delta_gpu)
@@ -153,6 +149,16 @@
extern "C" void update_convolutional_layer_gpu(convolutional_layer layer)
{
int size = layer.size*layer.size*layer.c*layer.n;
+
+/*
+ cuda_pull_array(layer.bias_updates_gpu, layer.bias_updates, layer.n);
+ cuda_pull_array(layer.biases_gpu, layer.biases, layer.n);
+ cuda_pull_array(layer.filter_updates_gpu, layer.filter_updates, size);
+ cuda_pull_array(layer.filters_gpu, layer.filters, size);
+ printf("Bias: %f updates: %f\n", mse_array(layer.biases, layer.n), mse_array(layer.bias_updates, layer.n));
+ printf("Filter: %f updates: %f\n", mse_array(layer.filters, layer.n), mse_array(layer.filter_updates, layer.n));
+ */
+
axpy_ongpu(layer.n, layer.learning_rate, layer.bias_updates_gpu, 1, layer.biases_gpu, 1);
scal_ongpu(layer.n,layer.momentum, layer.bias_updates_gpu, 1);
--
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