SEHException when using xgboost with gpu

[gaop123]

I have installed latest Cuda version (9.2), and when setting the tree method to GPU* i get an SEHException "external component has thrown an exception", should i compile the program in a certain way after cuda installation? What should i do?, thanks!

[mdabros]

Hi @gaop123 ,

It could sound like a GPU memory issue. There are no special compilation needed once you have installed Cuda like descriped in the guide: Cuda installation.

Could you provide some details about the following:

• Settings of the xgboost learner (code)
• How large is the problem you are training on (number of rows, cols)
• If possible, detailed description from the SEHException

Best regards
Mads

[gaop123]

I don't think it's a memory related issue, i have tried on some small data sets (about 500 rows and 100 cols) just to check but the exception is still thrown, this is the code of the learning part: var sharpDtLearner = new ClassificationXGBoostLearner(3,0.1,100,false,ClassificationObjective.GPUBinaryLogistic); var sut = sharpDtLearner.Learn(mat, outputs.Convert(x => (double)x)); ProbabilityPrediction[] pp = this.xgboost.PredictProbability(mat); this is then exception: System.Runtime.InteropServices.SEHException (0x80004005): External component has thrown an exception. at XGBoost.lib.XGBOOST_NATIVE_METHODS.XGBoosterUpdateOneIter(IntPtr bHandle, Int32 iter, IntPtr dHandle) at XGBoost.lib.Booster.Update(DMatrix train, Int32 iter) at SharpLearning.XGBoost.Learners.ClassificationXGBoostLearner.Learn(F64Matrix observations, Double[] targets, Int32[] indices) *if i change the objective to BinaryLogistic i't works perfectly. Thanks! ‫בתאריך יום ו׳, 7 בספט׳ 2018 ב-8:33 מאת ‪Mads Dabros‬‏ <‪ notifications@github.com‬‏>:‬

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Hi @gaop123 <https://github.com/gaop123> , It could sound like a GPU memory issue. There are no special compilation needed once you have installed Cuda like descriped in the guide: Cuda installation <https://docs.nvidia.com/cuda/cuda-installation-guide-microsoft-windows/index.html> . Could you provide some details about the following: - Settings of the xgboost learner (code) - How large is the problem you are training on (number of rows, cols) - If possible, detailed description from the SEHException Best regards Mads — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#87 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ANFWWW1K_hzG1exi6VOvr8h1GSZppSGsks5uYgVAgaJpZM4WcdTN> .

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