commit 6186b90c5335dd99cc8e73ec574c5deb7b173cb3
author Amit Kumar Chawla <amit.k.chawla@intel.com> Tue Nov 16 23:37:23 2021 -0800
committer Facebook GitHub Bot <facebook-github-bot@users.noreply.github.com> Tue Nov 16 23:39:02 2021 -0800
tree 3d6e8a8e760c841ad553a86de551afa0537bf36f
parent f6696c5a85bdc19ecd97e427c3b847e661d3fcfc

[Contrib][Fakelowp] Change Lut Size for Tanh (#68334)

Summary:
Reference code LUT size increased and now mininum
starts from 0, instead of 7000 earlier

Pull Request resolved: https://github.com/pytorch/pytorch/pull/68334

Reviewed By: jiecaoyu

Differential Revision: D32467332

Pulled By: hl475

fbshipit-source-id: 3e4510e09374519aebe657a31f0b1ccde117e761

caffe2/contrib/fakelowp/quant_lut_fp16_fake_op.h

diff --git a/caffe2/contrib/fakelowp/quant_lut_fp16_fake_op.h b/caffe2/contrib/fakelowp/quant_lut_fp16_fake_op.h
index d621036..fca53dd 100644
--- a/caffe2/contrib/fakelowp/quant_lut_fp16_fake_op.h
+++ b/caffe2/contrib/fakelowp/quant_lut_fp16_fake_op.h
@@ -30,7 +30,7 @@
     Y->scale = Y_scale;
     Y->zero_point = Y_offset;
 
-    constexpr int tanhLUTMinOffset = 7000;
+    constexpr int tanhLUTMinOffset = 0;
     constexpr int tanhLUTMaxOffset = 18000;
     constexpr int lutSize = tanhLUTMaxOffset - tanhLUTMinOffset;