engine loading crash on my windows 10

[Feiyu-Chen-THU]

Hi, I met a very strange problem during engine loading. Neither leelazero nor katago engine can be successfully loaded, with alerts shown in the attached image. It seemed the engine crashed during loading without any reason told in the gtp console. Another Go software, sabaki, can't normally load the two engines either, which may indicate that the bug is not related with issues like Java version.

I've been using Lizzie (as well as sabaki) on my computer (windows 10) for over 1 year and everything had been normal in my last use, about 1 month ago. I don't know what happened during the month but the bug occurred when I opened Lizzie yesterday. I've tried to delete all the files for Lizzie/leelazero/katago on my computer. Then I downloaded Lizzie.0.7.4.Windows.x64.GPU.zip, unzipped it and ran lizzie.jar (without changing any config or weight file). But the bug still existed. I copied Lizzie.0.7.4.Windows.x64.GPU.zip to other computers and everything was normal. I tried to change the path of Lizzie but it didn't work, either.

Then I downloaded the CPU version Lizzie.0.7.4.Windows.x64.CPU.zip for debug. Also, I unzipped it and directly ran lizzie.jar. In the CPU version, leelazero was successfully loaded but the same bug existed for katago. Quite strange!

I'm really curious of the exact reason of such a problem. Do you have any idea about this? Thank you very much!

OS: windows 10.0.17134.1130 java version: 1.8.0_271 Java(TM) SE Runtime Environment (build 1.8.0_271-b09) Java HotSpot(TM) Client VM (build 25.271-b09, mixed mode) GPU: GTX 1050ti

[Feiyu-Chen-THU]

Now I know the problem is caused by Intel Integrated Graphics. My Nvidia GPU just can't be used by the engines even if I manually set the engines to be run on Nvidia GPU in the driver. The only effective way I found is to disable the integrated graphics in Device Manager. Not a perfect solution but at least I can use the engines now. If anybody know how to solve it without disabling the integrated graphics please tell me. thanks

[bdrose]

You can change a setting in KataGo to select which GPU to use if it using the incorrect one by default. The file with KataGos settings is katago-gtp10.cfg in the Lizzie release. The part you want to likely change is openclGpuToUse = 0 to openclGpuToUse = 1 or another number until you see the correct GPU being utilized.

[Feiyu-Chen-THU]

Thank you @bdrose . I've tried your method but it didn't work. I describe more details about the problem in my issue under katago.