windows - Application python.exe had been blocked from accessing graphics devices - OpenCL -

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i have opencl programm here. works @ intel integrated gpu not @ nvidia gtx950m. question "my windows 10 saying app blocked". these had done , found:

  1. i got gpu crash in windows 10 if increase work items. so, had googled lot of docs topic. happens gpu time exceeded 2 seconds. so, found tdrdelay registry increase size.

  2. after increasing tdrdelay, got "blocked accessing graphics devices" issue. again, had googled that.

  3. someone said should upgrade nvidia driver. had done no luck.

  4. someone said should slow down gpu , gpu memory clock through msi afterburner. had tried , still no luck.

does know how deal issue???

my working environment windows pc following spec:

  • cpu: intel i7 6700hq
  • gpu: intel 540 hd , nvidia gtx 950m (with 2g ram)
  • ram: 8g
  • os: windows 10
  • programming language: python pyopencl

i found answer finally. pretty close answer: tdrdelay.

in windows, there registry key disable tdr (timeout detection , recovery): tdrlevel. once registry key set 0, windows totally disables tdr function.

hope can other...... :)


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