From cb1f33c6ae840e8dc0f43518daf76e6ed01034f0 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Mon, 08 Dec 2014 19:48:57 +0000
Subject: [PATCH] Fixed race condition in server
---
src/col2im.cl | 43 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 43 insertions(+), 0 deletions(-)
diff --git a/src/col2im.cl b/src/col2im.cl
index e69de29..617e818 100644
--- a/src/col2im.cl
+++ b/src/col2im.cl
@@ -0,0 +1,43 @@
+__kernel void col2im(__global float *data_col, int offset,
+ int channels, int height, int width,
+ int ksize, int stride, int pad, __global float *data_im)
+{
+
+ int height_col = (height - ksize) / stride + 1;
+ int width_col = (width - ksize) / stride + 1;
+ if (pad){
+ height_col = 1 + (height-1) / stride;
+ width_col = 1 + (width-1) / stride;
+ pad = ksize/2;
+ }
+
+ int id = get_global_id(0);
+ int index = id;
+ int w = id%width + pad;
+ id /= width;
+ int h = id%height + pad;
+ id /= height;
+ int c = id%channels;
+
+ int w_start = (w-ksize+stride)/stride;
+ int w_end = w/stride + 1;
+
+ int h_start = (h-ksize+stride)/stride;
+ int h_end = h/stride + 1;
+
+ int rows = channels * ksize * ksize;
+ int cols = height_col*width_col;
+ int col_offset = (c*ksize*ksize + h * ksize + w)*height_col*width_col;
+ int h_coeff = (1-stride*ksize*height_col)*width_col;
+ int w_coeff = 1-stride*height_col*width_col;
+ float val = 0;
+ int h_col, w_col;
+ for(h_col = h_start; h_col < h_end; ++h_col){
+ for(w_col = w_start; w_col < w_end; ++w_col){
+ int col_index = col_offset +h_col*h_coeff + w_col*w_coeff;
+ float part = (w_col < 0 || h_col < 0 || h_col >= height_col || w_col >= width_col) ? 0 : data_col[col_index];
+ val += part;
+ }
+ }
+ data_im[index+offset] = val;
+}
--
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