Buffer Overflow

I'm getting the following error typically after running a few trials:

Error using mldaq/MinSamplesAvailable (line 532)
NI_AITask::fetch_data:AQmxReadAnalogF64, The application is not able to keep up with the hardware acquisition.

Increasing the buffer size, reading the data more frequently, or specifying a fixed number of samples to read instead of reading
all available samples might correct the problem.
Property: DAQmx_Read_RelativeTo
Corresponding Value: DAQmx_Val_CurrReadPos
Property: DAQmx_Read_Offset
Corresponding Value: 0

Task Name: nidaqmxDev1-AITask-593023081

Status Code: -200279

Error in ArcTarget_Static_runtime/end_trial (line 843)
while DAQ.MinSamplesAvailable<=ml_MinSamplesExpected

Error in ArcTarget_Static_runtime (line 1314)
end_trial();

Error in run_trial (line 130)
runtime(MLConfig,TrialRecord,TaskObject,TrialData);

Error in monkeylogic/UIcallback (line 869)
result = run_trial(MLConfig,datafile);

Error while evaluating UIControl Callback.

I have seen a previous post where the same error was experienced. However, after trying all the solutions suggested in the previous post- using a powerful CPU (Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz), using an older version of MATLAB and reducing the sampling rate on the ML app- the problem still exists. I have been using the same task on Monkey Logic for a while, but only recently (after the updates) started experiencing this problem. Please let me know if you have any other suggestions.

Thanks!

Here is another error (which might be related ) that I observe when I tried running the pacman task.

Index in position 1 exceeds array bounds (must not exceed 13552).

Error in pacman_script_runtime/end_trial (line 870)
TrialData.AnalogData.Joystick=JoyCal.sig2deg(DAQ.Joystick(ml_SamplePoint,,param_.JoyOffset);

Error in pacman_script_runtime (line 1224)
end_trial();

Error in run_trial (line 130)
runtime(MLConfig,TrialRecord,TaskObject,TrialData);

Error in monkeylogic/UIcallback (line 869)
result = run_trial(MLConfig,datafile);

Error while evaluating UIControl Callback.

First of all, reducing the sampling rate was not a solution suggested. It makes no change.

I uploaded a new package, so try it. It may not be helpful though. Then get a much better computer.

Thanks for the reply. Where can I download the new package from?

From the Download page. Uninstall what you installed and reinstall the newly downloaded package.

I tried the new package and running the task on an even faster CPU as you suggested, but the error still exists.

I found a page providing solutions for the same error seen in LabView: [knowledge.ni.com]. Although, I have no idea how to implement these solutions in Monkey Logic.

Please let me know if you have any other suggestions.

Thanks

NIMH ML is already programmed in consideration of those things that the page discusses.

I do not have enough information to determine the cause of your problem. It is your computer, so sit down and carefully check what slows down your computer.

Update: It seems the problem was the DAQ that I was using. Similar to the previous post, I too was using a USB 6001. The error occurred whenever the number of inputs was larger that 2. However, when I switched to a PCIe card, it worked just fine.

Thanks for the update. I did not notice that you guys used a USB-6001. Unfortunately I won't be able to address this issue until I get an actual USB-6001, because my USB-6002 and the USB-6001 simulated by the NI driver do not show this problem.

Hi,
I was the one with the similar problem in the previous post.
Can you tell me which PCIe card you used that solves the problem?
Thanks!

Hi,
I used a PCIe-6323. Based on Jaewon's post, I will also try the USB 6002 and let you know if that works as well.

I am testing with a USB-6001 but do not see any error yet.

That is interesting. I just tried running the simple free then hold task using the usb 6001 with three assigned inputs (eye_x, eye_y and photodiode), and got the same error as before. It works perfectly fine if I use only two inputs.

I ran all I/O channels available in USB-6001 (8 AI, 2 AO and 13 DIO) simultaneously but did not get any error. I think the problem is in the computer or USB controller.

I see. Thanks for the update.