[GitHub] [incubator-mxnet] roywei opened a new issue #15569: Cub license issue

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roywei opened a new issue #15569: Cub license issue 
URL: https://github.com/apache/incubator-mxnet/issues/15569
 
 
   As pointed out here:
   https://mail-archives.apache.org/mod_mbox/incubator-general/201907.mbox/%3CF9383AEE-5693-40ED-BE1C-C109F3D219B7%40classsoftware.com%3E
   
   There is a file in Nvidia cub submodule with a license that does not allow redistribution:https://github.com/NVlabs/cub/blob/v1.8.0/test/half.h
   
   This will prevent MXNet from using it. While I raised [an issue](https://github.com/NVlabs/cub/issues/168) on NVlab github, I would propose the following if there is no response
   
   1)  change submodule cub to use v1.7.4 instead of v1.8, 1.7.4 and older does not have this file:
   https://github.com/NVlabs/cub/tree/v1.7.4/test. Not sure if v1.7.4 has the historical problems that lead us to make a snap shot of it
   
   2) revert https://github.com/apache/incubator-mxnet/pull/13322 which will go back to use dmlc/cub and it's v1.7 without the file.  
   
   cc @frankfliu 

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