visual studio 2012 - First-chance exception cudaError_enum at memory location -

i'm getting error when running app visual studio 2012. development specs:

• cuda 5.0
• vs c++ 2012
• quadro k4000

i've seen there other posts related here, here , here none has answer problem. i'm checking return codes cuda api, curand , cublas , returning success. looked in code problem raising , happens when create timer object gpu.

i'm using timer comes cuda sdk

struct gputimer{     cudaevent_t start;     cudaevent_t stop;     gputimer(){         checkcudaerr(             cudaeventcreate(&start)             );          checkcudaerr(             cudaeventcreate(&stop)             );     }     ~gputimer(){         checkcudaerr(             cudaeventdestroy(start)             );         checkcudaerr(             cudaeventdestroy(stop)             );     }     void start(){         checkcudaerr(             cudaeventrecord(start, 0)             );     }     void stop(){         checkcudaerr(             cudaeventrecord(stop, 0)             );     }     float elapsed(){         float elapsed;         checkcudaerr(             cudaeventsynchronize(stop)             );          checkcudaerr(             cudaeventelapsedtime(&elapsed, start, stop)             );         return elapsed;     } }; 

so in main function have

int main(args) {    ...    ...    ...    gputimer t;    ...    ... } 

and after line executed get

'app.exe' (win32): loaded 'c:\windows\system32\nvcuda.dll'. module built without symbols. 'app.exe' (win32): loaded 'c:\windows\system32\user32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\gdi32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\lpk.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\usp10.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\msvcrt.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\setupapi.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\cfgmgr32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\rpcrt4.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\advapi32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\sechost.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\oleaut32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\ole32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\devobj.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\shell32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\shlwapi.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\imm32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\msctf.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\dwmapi.dll'. cannot find or open pdb file. 'app.exe' (win32): unloaded 'c:\windows\system32\dwmapi.dll' 'app.exe' (win32): loaded 'c:\windows\system32\nvapi64.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\version.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\wintrust.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\crypt32.dll'. cannot find or open pdb file. 'app.exe' (win32): loaded 'c:\windows\system32\msasn1.dll'. cannot find or open pdb file. first-chance exception @ 0x000007fefda29e5d in app.exe: microsoft c++ exception: cudaerror_enum @ memory location 0x000000000018ea00. //repeated 20 times @ least 

finally, after launching application saw messages in output console (on vs2012)

'app.exe' (win32): loaded 'c:\program files\nvidia gpu computing toolkit\cuda\v5.0\bin\cudart64_50_35.dll'. module built without symbols. 'app.exe' (win32): loaded 'c:\program files\nvidia gpu computing toolkit\cuda\v5.0\bin\cublas64_50_35.dll'. module built without symbols. 'app.exe' (win32): loaded 'c:\program files\nvidia gpu computing toolkit\cuda\v5.0\bin\curand64_50_35.dll'. module built without symbols. 

the application runs fine , results fine me know causing errors/exceptions , how solve them, or if should ignore them.

the observation making has exception caught , handled within cuda libraries. is, in cases, normal part of cuda gpu operation. have observed, application returns no api errors , runs correctly. if not within vs environment can report this, not observe @ all.

this considered normal behavior under cuda 5.0. believe there attempts eliminate in cuda 5.5. might wish try that, although it's not considered issue either way.

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