tree bada99bb4e66cd997810d0573a2db07f21d19f7c
parent df1b3b396bbf7dbb831f0a9066847eb7c08f3d04
author A. Unique TensorFlower <gardener@tensorflow.org> 1568428778 -0700
committer TensorFlower Gardener <gardener@tensorflow.org> 1568440390 -0700

Speed up creation of tensors from compressed TensorProtos by 2-3x.

This should speed up some TF models optimized by Grappler in particular, since Grappler tries to compress all constants in a graph.

Run on XXXXX (72 X 2991 MHz CPUs); 2019-09-13T15:55:01.194485871-07:00
CPU: Intel Skylake Xeon with HyperThreading (36 cores) dL1:32KB dL2:1024KB dL3:24MB
Benchmark                          Base (ns)  New (ns) Improvement
------------------------------------------------------------------
BM_FromProto/512                         114       116     -1.8%
BM_FromProto/4k                          692       671     +3.0%
BM_FromProto/32k                        8675      8713     -0.4%
BM_FromProto/256k                     183931    184131     -0.1%
BM_FromProto/1M                       640952    638278     +0.4%
BM_FromProtoCompressed/512               215       118    +45.1%
BM_FromProtoCompressed/4k               1283       490    +61.8%
BM_FromProtoCompressed/32k             14115      8324    +41.0%
BM_FromProtoCompressed/256k            76930     32191    +58.2%
BM_FromProtoCompressed/1M             326284    170167    +47.8%
BM_FromProtoCompressedZero/512           215       119    +44.7%
BM_FromProtoCompressedZero/4k           1302       490    +62.4%
BM_FromProtoCompressedZero/32k         14333      8160    +43.1%
BM_FromProtoCompressedZero/256k        77032     32110    +58.3%
BM_FromProtoCompressedZero/1M         329943    171449    +48.0%
PiperOrigin-RevId: 269027674