Started opencl pi

opencl/pi.c

+#include <CL/cl.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+char *pi_kernel_source= "\n" \
+"__kernel void pi(                                                      \n" \
+"   __global float *buffer,                                             \n" \
+"   const unsigned int count)                                           \n" \
+"{                                                                      \n" \
+"   int i = get_global_id(0);                                           \n" \
+"   if(i < count){                                                      \n" \
+"       output[i] = input[i] * input[i];                                \n" \
+"   }                                                                   \n" \
+"}                                                                      \n" \
+"\n";
+
+
+int main(int argc, char **argv){
+
+  
+  cl_uint platform_id_count = 0;
+  clGetPlatformIDs (0, 0, &platform_id_count);
+
+  printf("System has %d opencl Platforms\n", platform_id_count);
+
+  cl_platform_id *platform_ids = malloc(platform_id_count * 
+					sizeof(cl_platform_id));
+  clGetPlatformIDs (platform_id_count, platform_ids, 0);
+
+  
+  cl_uint device_id_count = 0;
+  clGetDeviceIDs (platform_ids [0], CL_DEVICE_TYPE_ALL, 0, 0,
+		  &device_id_count);
+  
+  cl_device_id  *device_ids = malloc(device_id_count
+				     * sizeof(cl_device_id));
+  
+  clGetDeviceIDs (platform_ids [0], CL_DEVICE_TYPE_ALL, device_id_count,
+		  device_ids, 0);
+  
+  cl_context context; 
+  context = clCreateContext(0, 1, device_ids, 0, 0, 0);
+ 
+  cl_command_queue commands; 
+  commands = clCreateCommandQueue(context, device_ids[0], 0, 0);
+
+   
+  cl_program program;
+  program = clCreateProgramWithSource(context, 1, (const char **) &pi_kernel_source, 0, 0);
+  if (!program) {
+      printf("Error: Failed to create compute program!\n");
+      return -1;
+  }
+
+  return 0;
+}