iOSでもOpenCLを使えるか調べてみた ref: http://qiita.com/ykst/items/342685c50336a2894ff2

AppDelegate.m

#import "AppDelegate.h"
#import <dlfcn.h>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    void *lib = dlopen("/System/Library/PrivateFrameworks/OpenCL.framework/OpenCL", RTLD_LAZY);

    printf("%p\n", lib);

    return YES;
}

cl_bridge.c

#include <OpenCL/cl.h> // 適当にパスを通してAPI宣言を関数ポインタのexternに変更しておく
#include <stdio.h>
#include <dlfcn.h>

CL_API_ENTRY cl_int CL_API_CALL
(*clGetPlatformIDs)(cl_uint          /* num_entries */,
                    cl_platform_id * /* platforms */,
                    cl_uint *        /* num_platforms */) CL_API_SUFFIX__VERSION_1_0;

CL_API_ENTRY cl_int CL_API_CALL
(*clGetPlatformInfo)(cl_platform_id   /* platform */,
                     cl_platform_info /* param_name */,
                     size_t           /* param_value_size */,
                     void *           /* param_value */,
                     size_t *         /* param_value_size_ret */) CL_API_SUFFIX__VERSION_1_0;

static __attribute__((constructor)) void
cl_bridge_load_symbols(void)
{
    void *lib = dlopen("/System/Library/PrivateFrameworks/OpenCL.framework/OpenCL", RTLD_LAZY);

    clGetPlatformIDs = dlsym(lib, "clGetPlatformIDs");
    clGetPlatformInfo = dlsym(lib, "clGetPlatformInfo");

    cl_uint num = 0;
    clGetPlatformIDs(0, 0, &num);

    cl_platform_id platforms[num];
    clGetPlatformIDs(num, platforms, &num);

    char version[1024] = {};
    clGetPlatformInfo (platforms[0],  CL_PLATFORM_VERSION,
                       1024, version, 0);
    version[1023] = '\0';

    printf("Version: %s\n", version);
}

file1.txt

# 以下のパスはXcodeのインストール先に依存
$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.1.sdk/System/Library/PrivateFrameworks/OpenCL.framework
$ comm -23 <(nm -gj OpenCL | sort) <(nm -uj OpenCL | sort) | uniq

file3.txt

Version: OpenCL 1.2 (Sep 12 2014 13:36:29)