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antonmks / Alenka

GPU database engine
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Problems with group by #59

Closed bmanola closed 10 years ago

bmanola commented 10 years ago

Hi Alenka,

Is it possible that with larger datasets Group BY with varchar field crashes application ?

I tried dataset around 30M rows and group by can be done with int fields , but when i use varchar field it crashes.

I tries with smaller dataset (couple of rows) and it worked.

This field cannot be NULL because its a primary key in database.

Testing enviroment: GeForce GTX 760 2GB Windows 8 Pro Cuda toolkit 5.5 Change in MakeFile sm_35 to sm_30

Regards,

antonmks commented 10 years ago

I confirmed the problem.Working on it.

antonmks commented 10 years ago

That was quite an issue to fix. But it seems to work now. Thanks for bringing this to my attention !