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OpenCL Fails When Calling clGetPlatformIDs

I am new to OpenCL. Working with a Core i5 processor with Intel® HD Graphics 4000 running Windows 7. I installed the latest Intel driver with OpenCL support. GpuCapsViewer confirms that I have OpenCL support installed. I developed a simple HelloWorld program using the Intel OpenCL SDK. I successfully compiled the program, but when I start it, it is called when clGetPlatformIDs () is called with a segmentation error. This is my code:

#include <iostream>
#include <CL/opencl.h>

int main() {
    std::cout << "Test OCL  without driver" << std::endl;

    cl_int err;
    cl_uint num_platforms;

    err = clGetPlatformIDs(0, NULL, &num_platforms);
    if (err == CL_SUCCESS) {
        std::cout << "Success. Platforms available: " << num_platforms
                << std::endl;
    } else {
        std::cout << "Error. Platforms available: " << num_platforms
                << std::endl;
    }

    std::cout << "Test OCL without driver" << std::endl;
    std::cout << "Press button to exit." << std::endl;
    std::cin.get();
    return 0;
}

How can it be that GpuCapsViewer successfully confirms OpenCL support and can use it to run its demos, but I cannot run my code? Both should use the same functions, right?

Worked on this for several days. I even tried reinstalling the drivers. Any ideas?

GpuCapsViewer says:

: R295.93 (r295_00-233)/10.18.10.3496 (3-11-2014)
OPENGL: OpenGL 4.2 (GeForce GT 630M/PCIe/SSE2 290 .)
OPENCL: OpenCL 1.1, GeForce GT 630M: 2 @950MHz
CUDA: GeForce GT 630M CC: 2.1, : 2 @950MHz
PHYSX: GPU PhysX (NVIDIA GeForce GT 630M)
MULTI-GPU: GPU (2 GPU)

UPDATE:

:

g++ -I"C:\Program Files (x86)\Intel\OpenCL SDK\4.4\include" -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"Test3.d" -MT"Test3.d" -o "Test3.o" "../Test3.cpp"
Finished building: ../Test3.cpp

:

g++ -L"C:\Program Files (x86)\Intel\OpenCL SDK\4.4\lib\x64" -o "TestOpenCL"  ./HelloWorld.o ./HelloWorld2.o ./Test3.o   -lOpenCL
Finished building target: TestOpenCL

: Windows 7 Ultimate Version 6.1 (Build 7601: Service Pack 1)

2, :

Problem Event Name: APPCRASH
Application Name:   TestOpenCL.exe
Application Version:    0.0.0.0
Application Timestamp:  53bc6ac5
Fault Module Name:  TestOpenCL.exe
Fault Module Version:   0.0.0.0
Fault Module Timestamp: 53bc6ac5
Exception Code: c0000005
Exception Offset:   0000000000002cc0
OS Version: 6.1.7601.2.1.0.256.1
Locale ID:  1033
Additional Information 1:   56e3
Additional Information 2:   56e3743a8a234df3bdeba0b507471c44
Additional Information 3:   8fe0
Additional Information 4:   8fe0ef5706153941955de850e5612393

3:

DependencyWalker (http://dependencywalker.com/) dumpbin. :

Warning: At least one delay-load dependency module was not found.
Warning: At least one module has an unresolved import due to a missing export function in a delay-load dependent module.

, DLL , " ". (2) " .

API-MS-WIN-CORE-COM-L1-1-0.DLL
API-MS-WIN-CORE-WINRT-ERROR-L1-1-0.DLL
API-MS-WIN-CORE-WINRT-L1-1-0.DLL
API-MS-WIN-CORE-WINRT-ROBUFFER-L1-1-0.DLL
API-MS-WIN-CORE-WINRT-STRING-L1-1-0.DLL
API-MS-WIN-SHCORE-SCALING-L1-1-0.DLL
DCOMP.DLL
IESHIMS.DLL

4, BDRETRACE GDB:

Program received signal SIGSEGV, Segmentation fault.
0x0000000000402cc0 in clGetPlatformIDs ()
(gdb) backtrace full
#0  0x0000000000402cc0 in clGetPlatformIDs ()
No symbol table info available.
#1  0x0000000000402af3 in main () at ../Test3.cpp:11
        err = 0
        num_platforms = 0
        platform = 0x0

(gdb) backtrace
#0  0x0000000000402cc0 in clGetPlatformIDs ()
#1  0x0000000000402af3 in main () at ../Test3.cpp:11

UPDATE 5, GDB DISASS:

(gdb) disass
Dump of assembler code for function clGetPlatformIDs:
=> 0x0000000000402cc0 <+0>:     jmpq   *0x4b74e8(%rip)        # 0x8ba1ae
   0x0000000000402cc6 <+6>:     nop
   0x0000000000402cc7 <+7>:     nop
End of assembler dump.

6, GDB:

(gdb) INFO SHARED
From                To                  Syms Read   Shared Object Library
0x0000000077191000  0x00000000773384e0  Yes (*)     C:\Windows\system32\ntdll.dll
0x0000000077071000  0x000000007718eab4  Yes (*)     C:\Windows\system32\kernel32.dll
0x000007fefc081000  0x000007fefc0eb13c  Yes (*)     C:\Windows\system32\KernelBase.dll
0x000007fedf8d1000  0x000007fedf8e96aa  Yes (*)     C:\Windows\system32\OpenCL.dll
0x000007fefe101000  0x000007fefe1da628  Yes (*)     C:\Windows\system32\advapi32.dll
0x000007fefe061000  0x000007fefe0fe4bc  Yes (*)     C:\Windows\system32\msvcrt.dll
0x000007fefdcc1000  0x000007fefdcde39a  Yes (*)     C:\Windows\SYSTEM32\sechost.dll
0x000007fefc6a1000  0x000007fefc7cc914  Yes (*)     C:\Windows\system32\rpcrt4.dll
(*): Shared library is missing debugging information.

, x64 :

https://drive.google.com/file/d/0BxKA63T2GnKMRW02QWZnam5lSGM/edit?usp=sharing

7, GPUcaps:

GPUcaps 2 :

  • 1: Intel (R) HD Graphics 4000
  • GPU 2: NVIDIA GeForce GT 630M

:

https://drive.google.com/file/d/0BxKA63T2GnKMa00tU1gydGNJeXc/edit?usp=sharing

8:

@antiduh, OpenCL.dll, Windows\System32. mingw64. :

Invoking: Cross G++ Linker
g++ -L"C:\Windows\System32" -o "TestOpenCL"  ./HelloWorld.o ./HelloWorld2.o ./Test3.o   -lOpenCL
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\Windows\System32/OpenCL.dll when searching for -lOpenCL
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\Windows\System32/OpenCL.dll when searching for -lOpenCL
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lOpenCL
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\Windows\System32/msvcrt.dll when searching for -lmsvcrt
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\Windows\System32/advapi32.dll when searching for -ladvapi32
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\Windows\System32/shell32.dll when searching for -lshell32
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\Windows\System32/user32.dll when searching for -luser32
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\Windows\System32/kernel32.dll when searching for -lkernel32
d:/ws/apps_inst/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.7.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\Windows\System32/msvcrt.dll when searching for -lmsvcrt

9: , .

g++ -I. s.cpp -L. -lOpenCL

, . , , Eclipse. , , eclipse, ? , eclipse , ?

+4
1

:

  • : . , .lib , .obj. . lib, , . , .
  • , " ": . , .dll, , .lib, .dll, . .lib, , .dll , . , " " - ​​ , DLL , .
  • "" , " ": LoadLibrary. .lib,.dll . , LoadLibrary .dll. LoadLibrary .dll , GetProcAddress, , . .

dll .lib. , , , DLL (DLL "" ).

,.lib, , , , . , , DLL , , IAT. DLL, , IAT.

, DLL MathLib Factorial, exe, .lib Factorial, exe . Factorial .lib psuedo:

int Factorial( int value ) { 
   // Read MathLib IAT which should always be at address 0x8ba100.
   // Factorial real address gets stored in slot 2, so add 8 to the address
   // to read from.
   __asm jmp *0x8ba108; // nb this is an indirect jump.
}

, , DLL, IAT , .

, , , .lib, "load-time", opencl.dll. IAT , ; segfault:

0x0000000000402cc0 <+0>: jmpq *0x4b74e8(%rip) # 0x8ba1ae

, , . 3 opencl.dll/opencl.lib:

  • opencl.lib/dll, Kronos, /, , , lib.
  • opencl.lib/dll, Intel SDK .
  • opencl.lib/dll, Nvidia .

? :

  • opencl.dll, kronos, c:\windows\system32.
  • opencl.lib Kronos
  • , opencl.lib nvidia, SDK.
  • , , opencl.lib opencl.dll Intel, SDK.

Intel opencl.lib, , , Kronos opencl.dll c:\windows\system32. Intel opencl.dll , dll .

, :

g++ -I. s.cpp -L. -lOpenCL

- gcc Windows - , .lib, Gcc , DLL; , , - dll, lib. , Visual Studio, .lib .dll, -. Win SDK .lib(, kernel32.lib). , , , .

, gcc link , opencl.dll, , .lib ; , , opencl.dll, , , . .

:

libs dll:

+4

Source: https://habr.com/ru/post/1547652/

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