CUDA on Qt

Maithri

64 bit application

thanks @Ni-Sumi ,
I ll check it

Maithri

I Changed it to 64 bit version, now I am facing problem with
**error: file not recognized: File format not recognized ** for cuda object(.obj) file

Ni.Sumi

@Maithri

Clean and re-built once. It might help. And re-check the paths given.

lilyofvalley

For this error:
**error: file not recognized: File format not recognized ** for cuda object(.obj) file

Change the include path and lib path to following style and delete the build folder and .pro.user file, rebuild:

INCLUDEPATH +="C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v7.5/include"

macx:QMAKE_LIBDIR += "C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v7.5/lib"
linux:QMAKE_LIBDIR += "C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v7.5/lib64"
win32:QMAKE_LIBDIR += "C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v7.5/lib/x64"

I met similar problem in win 7, not sure about win 10.

Maithri

Thanks Ni.Sumi & lilyofvalley,
but nothing worked for me, still the same problem is coming.

lilyofvalley

These are the settings in my .pro file with win 7. I don't have win 10.
For your reference:

# CUDA with Windows
    #CUDA_DIR = "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.5"
    CUDA_DIR = "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0"
    SYSTEM_NAME = x64         # Depending on your system either 'Win32', 'x64', or 'Win64'
    SYSTEM_TYPE = 64            # '32' or '64', depending on your system
    CUDA_ARCH = sm_52           # Type of CUDA architecture, for example 'compute_10', 'compute_11', 'sm_10'
    NVCC_OPTIONS = --use_fast_math # default setting

    #include paths
    #INCLUDEPATH += $$CUDA_DIR\include
    #INCLUDEPATH += "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.5\include"
    INCLUDEPATH += "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\include"

    #library directories
    #QMAKE_LIBDIR += $$join(CUDA_DIR,'" -I"','-I"','"')\lib\$$SYSTEM_NAME
    #QMAKE_LIBDIR += "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v7.5\lib\x64"
    QMAKE_LIBDIR += "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\lib\x64"

    CUDA_LIBS = -lcuda -lcudart -lcufft

    CUDA_INC += $$join(INCLUDEPATH,'" -I"','-I"','"')

    LIBS += $$CUDA_LIBS

    # MSVCRT link option (static or dynamic, it must be the same with your Qt SDK link option)
    MSVCRT_LINK_FLAG_DEBUG = "/MDd"
    MSVCRT_LINK_FLAG_RELEASE = "/MD"

    CONFIG(debug, debug|release){
        cuda_d.input    = CUDA_SOURCES
        cuda_d.output   = ${QMAKE_FILE_BASE}_cuda.obj
        cuda_d.commands = $$CUDA_DIR/bin/nvcc.exe -D_DEBUG $$NVCC_OPTIONS $$CUDA_INC $$LIBS \
                        --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH \
                        --compile -cudart static -g -DWIN32 -D_MBCS \
                        -Xcompiler "/wd4819,/EHsc,/W3,/nologo,/Od,/Zi,/RTC1" \
                        -Xcompiler $$MSVCRT_LINK_FLAG_DEBUG \
                        -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME}
        cuda_d.dependency_type = TYPE_C
        QMAKE_EXTRA_COMPILERS += cuda_d
    }
    else {
        # Release settings
        cuda.input    = CUDA_SOURCES
        cuda.output   = ${QMAKE_FILE_BASE}_cuda.obj
        cuda.commands = $$CUDA_DIR/bin/nvcc.exe $$NVCC_OPTIONS $$CUDA_INC $$LIBS \
                        --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH \
                        --compile -cudart static -DWIN32 -D_MBCS \
                        -Xcompiler "/wd4819,/EHsc,/W3,/nologo,/O2,/Zi" \
                        -Xcompiler $$MSVCRT_LINK_FLAG_RELEASE \
                        -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME}
        cuda.dependency_type = TYPE_C
        QMAKE_EXTRA_COMPILERS += cuda
    }

Maithri

Thanks for the support,

Compilation problems got solved, now getting run time error

D:\maithri_MODD\CUDA_QT_5.7\build-cuda-qt-integration-GCC-Debug\cuda-qt-integration.exe exited with code -1073741515

mrjj

@Maithri said in CUDA on Qt:

exited with code -1073741515

Hi
If you start in debug mode and place breakpoint at main()

Do you get to the BP before the error ?

or does error just comes at once and main never reached?

Maithri

@mrjj

hello,
if I run it in debug mode, it's not reaching breakpoint and giving some other error.
I have attached error msg and main.cpp code
alt text

Thanks

[Fixed images' URLs ~kshegunov]

mrjj

@Maithri
Super but picture upload is broken here and I cant see it.
Can you please use external site and post links here.
Oh you did, for some reason they are not shown.
http://pasteboard.co/jvoRueubz.png
http://pasteboard.co/jvqX5yI1J.png

I am not huge Visual Studio user but this error
-1073741515 == 0xC0000135
and that should mean STATUS_DLL_NOT_FOUND

So maybe it needs some Dlls it cant find? Maybe some cuda ones?
If you have an idea which one it could be, then try copy them to the build folder next to the exe and try to
run again ( from editor) (Double clicking on EXE is 100% other matter so please dont do that)

Alternatively, download
http://www.dependencywalker.com/

It shows which dlls it will try to load and from where. that can also give hints.
So you will simply install it and open the .exe in it. it then shows all all it uses.
This tool is a bit confusing at first but gives great insight in what dlls being needed.

Maithri

main.cpp and error message
http://pasteboard.co/jvqX5yI1J.png
http://pasteboard.co/jvtvlRcWF.png

mrjj

@Maithri

My best guess would it just wants some DLLS from cuda.
Something like
Projects- > Build & Run" tab
"Run Settings" (chosen in the "Kit") For you is VS 64 bit !
"Run Environment" > "Details" > PATH

and see if it has paths to where cuda DLLS are. ( if such exists :)

Maithri

hi @mrjj ,

using the dependency walker figer out that the .exe file depends on so many dll files, I have given the path for the available dll's but still the problem exist .

Following are some of dll's which are not available in the system,
API-MS-WIN-CORE-HEAP-L2-1-0.DLL
API-MS-WIN-CORE-LIBRARYLOADER-L1-2-0.DLL
API-MS-WIN-CORE-APIQUERY-L1-1-0.DLL
API-MS-WIN-CORE-APPCOMPAT-L1-1-1.DLL
API-MS-WIN-CORE-APPINIT-L1-1-0.DLL
API-MS-WIN-CORE-ATOMS-L1-1-0.DLL
API-MS-WIN-CORE-COM-L1-1-1.DLL...........................

mrjj

@Maithri

Those are normal. Shown as missing most of the time-
I was more after some CUDA dlls or something it need for this project.

Also click on those CUDA dlls it have and see if those have indirectly a need for a dll it cant find.

Ni.Sumi

@Maithri said in CUDA on Qt:

main.cpp and error message
http://pasteboard.co/jvqX5yI1J.png
http://pasteboard.co/jvtvlRcWF.png

In addition to Mr. @mrjj .

Usually, this debug error is caused due to mismatach of the bit version. Earlier , even I have faced the same problem . Please check that you are using the right cdb.exe (32 bit or 64 bit). Check here to configure the debug

CDB Process terminated unexpectedly

you can find your 64 bit path of cdb here (Win10)

C:\Program Files (x86)\Windows Kits\8.1\Debuggers\x64\cdb.exe

If still, does not run, check all the required dll's you have them or not. (not the general windows dll's).

Does it run fine in release mode ?

Maithri

@Ni.Sumi

i am using 64bit cdb.
its running fine in release mode.

Thanks