Commits on Apr 18, 2020

1. Fix and optimize handling of vectorized memory accesses (apache#17767) …

   * Vectorized loads for binary elemwise kernel
   
   * More generalization
   
   * Add backwardusenone
   
   * Remove the unused _backward_add op
   
   * Add vectorized backwardusein
   
   * Extending vectorization to more binary ops, binary ops with scalar and
   unary ops
   
   * Handling ElementwiseSum
   
   * Get rid of half2 in mshadow
   
   * Remove backward_elemwiseaddex
   
   * Revert "Remove the unused _backward_add op"
   
   This reverts commit f86da86.
   
   * Revert "Remove backward_elemwiseaddex"
   
   This reverts commit 7729114.
   
   * Add back the backward_add since C++ test relies on it
   
   * Test bcast implementations
   
   * First version of vecotrized bcast
   
   * Adding single side vectorized bcast kernel
   
   * Removing debug prints
   
   * Actually run the single side kernel
   
   * Move the default implementation of bcast to the vectorized one
   
   * Limit the new implementation to GPU only
   
   * Enabling vectorization when broadcast does not actually do broadcast
   
   * Cleaning
   
   * Cleaning part 2
   
   * Fix for numpy ops using stuff from broadcast
   
   * Fix
   
   * Fix lint
   
   * Try to debug pinv numpy test
   
   * Fix
   
   * Fix the vectorized broadcast implementation for misaligned input
   pointers
   
   * Added tests
   
   * Added docs to cuda_vectorization.cuh
   
   * Another fix for broadcast and fix INT64 compilation
   
   * Optimize for aligned=true
   
   * 1 more addition to test
   
   * Reverting the change to Numpy op test
   
   * Trying mcmodel=medium to fix the failure in CMake static build
   
   * Revert "Trying mcmodel=medium to fix the failure in CMake static build"
   
   This reverts commit 1af684c.
   
   * Limiting the PR to just elementwise ops

   

   ptrendx committed Apr 18, 2020
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