Error -50352 , memory could not be allocated

[PSteiss]

Dear reader

When I try to generate analog output on a PCI 6733 card, I get error -50352 - memory could not be allocated.
System: Ni-DAQmx 8.7.1, 3 GB RAM, Core-2-Duo 6600, Win2k SP4 (freshly restarted system - reproducible)
I don't really understand why...

I only it get it if nSamples >~5e6 (e.g. 6e6)

But memory should not (yet) be an issue (10e6 Samples x 8 chans x 2 bytes / Chan / Sample ) = 160 MBytes.

    TaskHandle taskHandle6733AAna;
    char errBuff[4096];

    const int nSamples = 6e6;
    short* pAnaBuffer6733A = new short[nSamples*8];
    int error;
    double dt=2e-6;
    long written = 0;
    unsigned long majVersion;     
    unsigned long minVersion;     
    DAQmxGetSysNIDAQMajorVersion(&majVersion); //majVersion 8
    DAQmxGetSysNIDAQMinorVersion(&minVersion); //minVersion 7

    error=DAQmxCreateTask("6733AAnaOutTask",&taskHandle6733AAna);
    assert(error==0);

    error = DAQmxCfgOutputBuffer(taskHandle6733AAna, 1e6);
    // I get the error later on independent of the OutputBuffer setting

    error=DAQmxCreateAOVoltageChan(taskHandle6733AAna,"Dev2/ao0:Dev2/ao7","",-10.0,10.0,DAQmx_Val_Volts,NULL);
    DAQmxGetExtendedErrorInfo(errBuff,2048);
    assert(error==0);

    error=DAQmxCfgSampClkTiming(taskHandle6733AAna,"OnboardClock",1./dt,DAQmx_Val_Falling,DAQmx_Val_FiniteSamps,nSamples);
    DAQmxGetExtendedErrorInfo(errBuff,2048);
    assert(error==0);

    error=DAQmxWriteRaw(taskHandle6733AAna,nSamples,0,60.0,pAnaBuffer6733A,&written,NULL);
    // Here I get the error -50352
    DAQmxGetExtendedErrorInfo(errBuff,2048);
    assert(error==0);

    error=DAQmxStartTask(taskHandle6733AAna);
    DAQmxGetExtendedErrorInfo(errBuff,2048);
    assert(error==0);
   

    bool32 isDone = false;

    while (!isDone) {
        DAQmxIsTaskDone(taskHandle6733AAna, &isDone);
        Sleep(100);
    };

    DAQmxClearTask(taskHandle6733AAna);

    return 0;


I appreadiate any help!!

Best Regards
Pascal


pascal.steiss@gmx.ch