From 5ef74c2031a040f30a670dc7d60790fc6a9ec720 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Fri, 02 May 2014 22:20:34 +0000
Subject: [PATCH] Slowly refactoring and pushing to GPU
---
src/opencl.c | 80 +++++++++++++++++++++++----------------
1 files changed, 47 insertions(+), 33 deletions(-)
diff --git a/src/opencl.c b/src/opencl.c
index 193fba3..0d645ba 100644
--- a/src/opencl.c
+++ b/src/opencl.c
@@ -1,7 +1,11 @@
+#ifdef GPU
#include "opencl.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
cl_info cl = {0};
@@ -9,23 +13,32 @@
{
if (info.error != CL_SUCCESS) {
printf("\n Error number %d", info.error);
+ exit(1);
}
}
+#define MAX_DEVICES 10
+
cl_info cl_init()
{
cl_info info;
info.initialized = 0;
- cl_uint platforms, devices;
+ cl_uint num_platforms, num_devices;
// Fetch the Platform and Device IDs; we only want one.
- info.error=clGetPlatformIDs(1, &info.platform, &platforms);
+ cl_device_id devices[MAX_DEVICES];
+ info.error=clGetPlatformIDs(1, &info.platform, &num_platforms);
check_error(info);
- info.error=clGetDeviceIDs(info.platform, CL_DEVICE_TYPE_ALL, 1, &info.device, &devices);
+ info.error=clGetDeviceIDs(info.platform, CL_DEVICE_TYPE_ALL, MAX_DEVICES, devices, &num_devices);
+ if(num_devices > MAX_DEVICES) num_devices = MAX_DEVICES;
+ int index = getpid()%num_devices;
+ printf("%d rand, %d devices, %d index\n", getpid(), num_devices, index);
+ info.device = devices[index];
+ fprintf(stderr, "Found %d device(s)\n", num_devices);
check_error(info);
cl_context_properties properties[]={
- CL_CONTEXT_PLATFORM, (cl_context_properties)info.platform,
- 0};
+ CL_CONTEXT_PLATFORM, (cl_context_properties)info.platform,
+ 0};
// Note that nVidia's OpenCL requires the platform property
info.context=clCreateContext(properties, 1, &info.device, 0, 0, &info.error);
check_error(info);
@@ -37,41 +50,42 @@
cl_program cl_fprog(char *filename, char *options, cl_info info)
{
- size_t srcsize;
- char src[8192];
- memset(src, 0, 8192);
- FILE *fil=fopen(filename,"r");
- srcsize=fread(src, sizeof src, 1, fil);
- fclose(fil);
- const char *srcptr[]={src};
- // Submit the source code of the example kernel to OpenCL
- cl_program prog=clCreateProgramWithSource(info.context,1, srcptr, &srcsize, &info.error);
- check_error(info);
- char build_c[4096];
- // and compile it (after this we could extract the compiled version)
- info.error=clBuildProgram(prog, 0, 0, options, 0, 0);
- if ( info.error != CL_SUCCESS ) {
- fprintf(stderr, "Error Building Program: %d\n", info.error);
- clGetProgramBuildInfo( prog, info.device, CL_PROGRAM_BUILD_LOG, 4096, build_c, 0);
- fprintf(stderr, "Build Log for %s program:\n%s\n", filename, build_c);
- }
- return prog;
+ size_t srcsize;
+ char src[8192];
+ memset(src, 0, 8192);
+ FILE *fil=fopen(filename,"r");
+ srcsize=fread(src, sizeof src, 1, fil);
+ fclose(fil);
+ const char *srcptr[]={src};
+ // Submit the source code of the example kernel to OpenCL
+ cl_program prog=clCreateProgramWithSource(info.context,1, srcptr, &srcsize, &info.error);
+ check_error(info);
+ char build_c[4096];
+ // and compile it (after this we could extract the compiled version)
+ info.error=clBuildProgram(prog, 0, 0, options, 0, 0);
+ if ( info.error != CL_SUCCESS ) {
+ fprintf(stderr, "Error Building Program: %d\n", info.error);
+ clGetProgramBuildInfo( prog, info.device, CL_PROGRAM_BUILD_LOG, 4096, build_c, 0);
+ fprintf(stderr, "Build Log for %s program:\n%s\n", filename, build_c);
+ }
+ check_error(info);
+ return prog;
}
void cl_setup()
{
- if(!cl.initialized){
- cl = cl_init();
- }
+ if(!cl.initialized){
+ cl = cl_init();
+ }
}
cl_kernel get_kernel(char *filename, char *kernelname, char *options)
{
- cl_setup();
- cl_program prog = cl_fprog(filename, options, cl);
- cl_kernel kernel=clCreateKernel(prog, kernelname, &cl.error);
- check_error(cl);
- return kernel;
+ cl_setup();
+ cl_program prog = cl_fprog(filename, options, cl);
+ cl_kernel kernel=clCreateKernel(prog, kernelname, &cl.error);
+ check_error(cl);
+ return kernel;
}
-
+#endif
--
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