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Subject [GitHub] [incubator-tvm] roastduck commented on issue #5307: [TIR] Make lower_warp_memory support extent(threadIdx.x) < warp_size
Date Mon, 13 Apr 2020 00:20:28 GMT
roastduck commented on issue #5307: [TIR] Make lower_warp_memory support extent(threadIdx.x)
< warp_size
URL: https://github.com/apache/incubator-tvm/pull/5307#issuecomment-612697828
 
 
   I agree with the description of A0 and A1, and now I think there may be an A2 in the design
space.
   
   - A2: Improve the shuffle detection. We can analyze all the three thread axes, instead
of only `threadIdx.x`. If the detection is strong enough, we can do whatever shuffle we want
without limiting `threadIdx.x` to be the warp axis.
   
   I think A2 may require less complexity than A0, where we should alter the thread indices.
   
   And for documentation, am I suppose to refine the comments in the code, or start a new
documentation page for the topic of warp memory?

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