From d9f1b0b16edeb59281355a855e18a8be343fc33c Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Fri, 08 Aug 2014 19:04:15 +0000
Subject: [PATCH] probably how maxpool layers should be
---
src/activations.c | 39 ++++++++++++++++++++++++++++++++++++++-
1 files changed, 38 insertions(+), 1 deletions(-)
diff --git a/src/activations.c b/src/activations.c
index 24868a3..04b27c9 100644
--- a/src/activations.c
+++ b/src/activations.c
@@ -2,6 +2,7 @@
#include <math.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
char *get_activation_string(ACTIVATION a)
@@ -40,7 +41,8 @@
float ramp_activate(float x){return x*(x>0)+.1*x;}
float tanh_activate(float x){return (exp(2*x)-1)/(exp(2*x)+1);}
-float activate(float x, ACTIVATION a){
+float activate(float x, ACTIVATION a)
+{
switch(a){
case LINEAR:
return linear_activate(x);
@@ -89,3 +91,38 @@
}
}
+#ifdef GPU
+
+#include "opencl.h"
+#include <math.h>
+
+cl_kernel get_activation_kernel()
+{
+ static int init = 0;
+ static cl_kernel kernel;
+ if(!init){
+ kernel = get_kernel("src/activations.cl", "activate_array", 0);
+ init = 1;
+ }
+ return kernel;
+}
+
+
+void activate_array_ongpu(cl_mem x, int n, ACTIVATION a)
+{
+ cl_setup();
+ cl_kernel kernel = get_activation_kernel();
+ cl_command_queue queue = cl.queue;
+
+ cl_uint i = 0;
+ cl.error = clSetKernelArg(kernel, i++, sizeof(x), (void*) &x);
+ cl.error = clSetKernelArg(kernel, i++, sizeof(n), (void*) &n);
+ cl.error = clSetKernelArg(kernel, i++, sizeof(a), (void*) &a);
+ check_error(cl);
+
+ size_t gsize = n;
+
+ clEnqueueNDRangeKernel(queue, kernel, 1, 0, &gsize, 0, 0, 0, 0);
+ check_error(cl);
+}
+#endif
--
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