Update, the issue is fixed and the new patch release is out MKL-DNN 0.17.4.
Tao filed a PR to update the MKLDNN version in the release 1.4.X https://github.com/apache/incubator-mxnet/pull/14141 Thanks all of your helps :) --Patric > -----Original Message----- > From: Zhao, Patric [mailto:patric.z...@intel.com] > Sent: Tuesday, February 5, 2019 11:53 AM > To: dev@mxnet.incubator.apache.org > Cc: Lv, Tao A <tao.a...@intel.com>; Ye, Jason Y <jason.y...@intel.com> > Subject: RE: [VOTE] Release Apache MXNet (incubating) version 1.4.0.rc2 > > Hi Sheng, > > Thanks to raise this important issues. Sorry for the lack of validation since > we > don't have mac machine with earlier OS version in house. > > I will contact with MKL-DNN team for the supports of earlier versions of OSX > but I'm a little afraid the fix needs some extra-time. > > Alternatively, several workarounds in my thoughts (I know it's not the perfect > solution): > > * using LLVM which can work crossing HW/OS generation > https://github.com/apache/incubator- > mxnet/blob/master/MKLDNN_README.md#2 > > * provide the binary build for different HW/OS like cuda, mxnet-cu90/92 > > * disable MKLDNN supports for earlier versions of HW/OS in MAC, only > mxnet build. > > I will update the status when get the feedback and schedule from MKL-DNN > team. > > Feel free to let us know if anything we can help. > > Thanks, > > --Patric > > > > -----Original Message----- > > From: Sheng Zha [mailto:szha....@gmail.com] > > Sent: Tuesday, February 5, 2019 10:33 AM > > To: dev@mxnet.incubator.apache.org > > Subject: Re: [VOTE] Release Apache MXNet (incubating) version > > 1.4.0.rc2 > > > > Also, recent MKLDNN upgrade prevents us from offering binary > > distribution for earlier versions of OSX, as it now requires OSX > > 10.13. This means we would need to drop the binary distribution > > support for OSX 10.11 and 10.12 if we are to keep mkldnn as a > > dependency for mxnet-mkl. I'm inquiring whether Intel could extend the > > compatibility to earlier OSX [1], but even if this is solved upstream it > > would > require an update on the mkldnn submodule. > > > > -sz > > > > [1] https://github.com/intel/mkl-dnn/issues/405 > > > > On Mon, Feb 4, 2019 at 3:47 PM Anirudh Subramanian > > <anirudh2...@gmail.com> > > wrote: > > > > > -0 > > > > > > Thanks Steffen for your release efforts ! > > > > > > Build from source works with make but fails with cmake for me. > > > > > > cd build && cmake VERBOSE=1 -DUSE_CUDA=ON -DUSE_CUDNN=ON > > > -DUSE_OPENMP=ON -DCMAKE_BUILD_TYPE=Debug - > > DUSE_DIST_KVSTORE=0 > > > -DUSE_OPENCV=1 -GNinja .. && ninja -v > > > > > > FAILED: : && /usr/bin/c++ -Wall -Wno-unknown-pragmas -fPIC -g -O0 - > > msse2 > > > -std=c++11 -fopenmp -g -pthread > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_lockfree.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_param.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_parser.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_array_view.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_any.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_config.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_threaditer.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_serializer.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_threaditer_exc_handling.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_inputsplit.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_logging.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_json.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_optional.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_main.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_env.cc.o > > > > > > 3rdparty/dmlc-core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unit > > > te > > > st_thread_group.cc.o -o > > > 3rdparty/dmlc-core/test/unittest/dmlc_unit_tests -rdynamic > > > lib/libgtestd.a 3rdparty/dmlc-core/libdmlc.a -lpthread && : > > > > > > 3rdparty/dmlc- > > core/test/unittest/CMakeFiles/dmlc_unit_tests.dir/unittest_logging.cc.o: > > > In function `Logging_basics_Test::TestBody()': > > > > > > /home/ubuntu/experimentals/1.4_release/build/../3rdparty/dmlc- > > core/test/unittest/unittest_logging.cc:19: > > > undefined reference to `testing::internal::DeathTest::Create(char > > > const*, testing::internal::RE const*, char const*, int, > > > testing::internal::DeathTest**)' > > > collect2: error: ld returned 1 exit status > > > > > > > > > Anirudh > > > > > > On Mon, Feb 4, 2019 at 3:09 PM Haibin Lin <haibin.lin....@gmail.com> > > > wrote: > > > > > > > +1 built from source on Linux and passed dist sync kvstore test. > > > > > > > > On Mon, Feb 4, 2019 at 9:54 AM Lin Yuan <apefor...@gmail.com> > wrote: > > > > > > > > > +1 build from source on MacOS 10.13.6 and tested mxnet-to-coreml > > > > converter. > > > > > > > > > > On Mon, Feb 4, 2019 at 9:03 AM Indhu <indhubhara...@gmail.com> > > wrote: > > > > > > > > > > > +1 > > > > > > > > > > > > Build from source and tested few examples from the examples > folder. > > > > > > > > > > > > Thanks, > > > > > > Indu > > > > > > > > > > > > > > > > > > > > > > > > On Fri, Feb 1, 2019 at 6:21 PM Steffen Rochel < > > > steffenroc...@gmail.com > > > > > > > > > > > wrote: > > > > > > > > > > > > > Hi Sheng - thanks for the feedback. > > > > > > > TVM notice file is missing as the 1.4.x branch/v1.4.0 > > > > > > > release is > > > > using > > > > > > TVM > > > > > > > commit 0f053c8 > > > > > > > < > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://github.com/dmlc/tvm/commit/0f053c82a747b4dcdf49570ec87c17e0 > > 067 > > > b7439 > > > > > > > > > > > > > > > from Oct 8, 2018, which didn't have the NOTICE file. IMHO, > > > > > > > MXNet > > > > > NOTICE > > > > > > > file is consistent with release content. > > > > > > > As the release started in 2018 I do think it is ok to move > > > > > > > forward > > > > w/o > > > > > > > update to 2019 IMHO. > > > > > > > > > > > > > > All - > > > > > > > thanks to the committers/contributors (Tao, Aaron, Kellen, > > > > > > > Aston, > > > > Yuxi) > > > > > > who > > > > > > > tested and provided feedback - we have five +1 votes. > > > > > > > As of today, Friday Feb 1st 2019 6pm PST we have two binding > > > > > > > votes, > > > > one > > > > > > +1 > > > > > > > (Carin), one +0 (Sheng). The vote continues be open waiting > > > > > > > for > > > > > feedback > > > > > > > from PMC members. > > > > > > > Hope you can spare some time over the weekend to provide > > feedback. > > > > > > > > > > > > > > Regards, > > > > > > > Steffen > > > > > > > > > > > > > > On Fri, Feb 1, 2019 at 12:44 AM Marco de Abreu < > > > > > marco.g.ab...@gmail.com> > > > > > > > wrote: > > > > > > > > > > > > > > > Considering the release process has been started last year > > > > > > > > and > > > the > > > > > code > > > > > > > tag > > > > > > > > has also been based on last year, I'd say that it is not > > > > > > > > really a > > > > big > > > > > > > deal. > > > > > > > > > > > > > > > > -Marco > > > > > > > > > > > > > > > > Am Fr., 1. Feb. 2019, 09:33 hat Sheng Zha > > > > > > > > <szha....@gmail.com> > > > > > > > > geschrieben: > > > > > > > > > > > > > > > > > I found an awesome checklist for incubator releases [1] > > > > > > > > > so I'm > > > > > using > > > > > > it > > > > > > > > > here: > > > > > > > > > > > > > > > > > > -[Y] Are release files in correct location? > > > > > > > > > -[Y] Do release files have the word incubating in their name? > > > > > > > > > -[Y] Are the digital signature and hashes correct? > > > > > > > > > -[Y] Does DISCLAIMER file exist? > > > > > > > > > -[Y] Do LICENSE and NOTICE files exists? > > > > > > > > > -[N/A] Is the LICENSE and NOTICE text correct? (sz: did > > > > > > > > > not > > > > finish > > > > > > > > > checking) > > > > > > > > > -[N] Is the NOTICE year correct? > > > > > > > > > -[N/A] Un-included software dependencies are not > > > > > > > > > mentioned in > > > > > LICENSE > > > > > > > or > > > > > > > > > NOTICE? (sz: did not finish checking) -[Y] License > > > > > > > > > information is not mentioned in NOTICE? > > > > > > > > > Is there any 3rd party code contained inside the release? > > > > > > > > > If > > > so: > > > > > > > > > -[Y] Does the software have a compatible license? > > > > > > > > > -[Y] Are all software licenses mentioned in LICENSE? > > > > > > > > > -[Y] Is the full text of the licenses (or pointers to > > > > > > > > > it) in > > > > > LICENSE? > > > > > > > > > Is any of this code Apache licensed? Do they have NOTICE > > > > > > > > > files? > > > > If > > > > > > so: > > > > > > > > > -[N] Have relevant parts of those NOTICE files been > > > > > > > > > added to > > > this > > > > > > > NOTICE > > > > > > > > > file? > > > > > > > > > TVM has Apache 2.0 license and its NOTICE hasn't been > > > > > > > > > added to > > > > > > MXNet's > > > > > > > > > NOTICE file. > > > > > > > > > -[Y] Do all source files have ASF headers? (sz: enforced > > > > > > > > > by > > > > license > > > > > > > > > checker) > > > > > > > > > -[Y] Do the contents of the release match with what's > > > > > > > > > tagged in > > > > > > version > > > > > > > > > control? > > > > > > > > > -[N] Are there any unexpected binary files in the release? > > > > > > > > > -[Y] Can you compile from source? Are the instruction clear? > > > > > > > > > > > > > > > > > > Is the issue minor? > > > > > > > > > - Unsure. NOTICE year is wrong (it's 2019 now). TVM's > > > > > > > > > NOTICE is > > > > > > missing > > > > > > > > > from MXNet's NOTICE file. > > > > > > > > > Could it possibly be fixed in the next release? > > > > > > > > > - Yes > > > > > > > > > I vote with: > > > > > > > > > +0 not sure if it should be released. Could mentors > > > > > > > > > +advise if > > > we > > > > > > should > > > > > > > > fix > > > > > > > > > them before release? > > > > > > > > > > > > > > > > > > [1] > > > https://wiki.apache.org/incubator/IncubatorReleaseChecklist > > > > > > > > > > > > > > > > > > > > > > > > > > > On Thu, Jan 31, 2019 at 10:56 PM Lv, Tao A > > > > > > > > > <tao.a...@intel.com > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > +1. Verified below items: > > > > > > > > > > > > > > > > > > > > 1. Checkout code from tag 1.4.0rc2 and build mkldnn > > > > > > > > > > backend > > > > > > > > successfully > > > > > > > > > > on both cpu and gpu w/ mkl and openblas 2. ResNet50v1 > > > > > > > > > > FP32 performance looks good for both latency > > > and > > > > > > > > throughput > > > > > > > > > > 3. Quantization script works well with ResNet50v1 4. > > > > > > > > > > ResNet50v1 INT8 model accuracy looks good 5. > > > > > > > > > > ResNet50v1 > > > > > > > > > > INT8 model performance speedup looks good for > > > > both > > > > > > > > latency > > > > > > > > > > and throughput > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -----Original Message----- > > > > > > > > > > From: kellen sunderland > > > > > > > > > > [mailto:kellen.sunderl...@gmail.com] > > > > > > > > > > Sent: Friday, February 1, 2019 11:45 AM > > > > > > > > > > To: dev@mxnet.incubator.apache.org > > > > > > > > > > Subject: Re: [VOTE] Release Apache MXNet (incubating) > > > > > > > > > > version > > > > > > > 1.4.0.rc2 > > > > > > > > > > > > > > > > > > > > Great, thanks Steffen! I added a few key files but > > > > > > > > > > missed > > > that > > > > > > one. > > > > > > > > > > > > > > > > > > > > +1 from me. > > > > > > > > > > > > > > > > > > > > On Thu, Jan 31, 2019 at 9:35 AM Steffen Rochel < > > > > > > > > steffenroc...@gmail.com> > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > Kellen - Sergey, the 1.4.0 release co-manager signed > > > > > > > > > > > the > > > tar > > > > > > file. > > > > > > > > > > > Please use his public key to validate the asc. > > > > > > > > > > > I was able to validate: > > > > > > > > > > > > > > > > > > > > > > curl > > > > > https://dist.apache.org/repos/dist/dev/incubator/mxnet/KEYS > > > > > > > -o > > > > > > > > > > > KEYS > > > > > > > > > > > > > > > > > > > > > > gpg --import KEYS > > > > > > > > > > > > > > > > > > > > > > gpg --verify > > > apache-mxnet-src-1.4.0.rc2-incubating.tar.gz.asc > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > output: > > > > > > > > > > > > > > > > > > > > > > gpg: assuming signed data in > > > > > > > > > > 'apache-mxnet-src-1.4.0.rc2-incubating.tar.gz' > > > > > > > > > > > > > > > > > > > > > > gpg: Signature made Sat Jan 26 16:25:41 2019 PST > > > > > > > > > > > > > > > > > > > > > > gpg: using RSA key > > > > > > > > > > BD52136E76B7BD68E7843B0B591C06669F740FD7 > > > > > > > > > > > > > > > > > > > > > > gpg: Good signature from "Sergey Kolychev < > > > > > > > sergeykolyc...@apache.org > > > > > > > > >" > > > > > > > > > > > [unknown] > > > > > > > > > > > > > > > > > > > > > > gpg: WARNING: This key is not certified with a > > > > > > > > > > > trusted > > > > > signature! > > > > > > > > > > > > > > > > > > > > > > gpg: There is no indication that the signature > > > > belongs > > > > > > to > > > > > > > > the > > > > > > > > > > > owner. > > > > > > > > > > > > > > > > > > > > > > Primary key fingerprint: BD52 136E 76B7 BD68 E784 > > > > > > > > > > > 3B0B > > > 591C > > > > > 0666 > > > > > > > > 9F74 > > > > > > > > > > > 0FD7 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Best, > > > > > > > > > > > Steffen > > > > > > > > > > > > > > > > > > > > > > On Wed, Jan 30, 2019 at 10:39 PM kellen sunderland < > > > > > > > > > > > kellen.sunderl...@gmail.com> wrote: > > > > > > > > > > > > > > > > > > > > > > > +0 > > > > > > > > > > > > > > > > > > > > > > > > Overall release looks good. Probably something > > > > > > > > > > > > I'm doing > > > > > > wrong, > > > > > > > > but > > > > > > > > > > > > so > > > > > > > > > > > far > > > > > > > > > > > > not able to validate the .asc. I'm getting "Can't > > > > > > > > > > > > check > > > > > > > signature: > > > > > > > > > > > > No public key". I've added the keys from GitHub > > > > > > > > > > > > and the > > > > > > release > > > > > > > > > > > > folder, and also added your public key > > "40C9346904DFCE37" > > > > > from > > > > > > > the > > > > > > > > > > > > MIT key server Steffen. Is there another key I'm > > > missing? > > > > > > > > > > > > > > > > > > > > > > > > 1. sha512 look good. > > > > > > > > > > > > 2. Compile from source successfully 3. TensorRT > > > > > > > > > > > > build succeeds and runs inference for demo > > > > models > > > > > > 4. > > > > > > > > > > > > License, notice and disclaimer exist. > > > > > > > > > > > > > > > > > > > > > > > > -Kellen > > > > > > > > > > > > > > > > > > > > > > > > On Wed, Jan 30, 2019 at 8:58 PM Steffen Rochel > > > > > > > > > > > > <steffenroc...@gmail.com> > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > Dear MXNet community - we currently have three > > > > > > > > > > > > > +1 votes, one binding. > > > > > > > > > > > > > As the vote did not reach the necessary number > > > > > > > > > > > > > of > > > binding > > > > > > votes > > > > > > > > > > > > > I'm extending voting. > > > > > > > > > > > > > > > > > > > > > > > > > > I'm calling on all PMC member, please test and vote. > > > > > > > > > > > > > > > > > > > > > > > > > > Regards, > > > > > > > > > > > > > Steffen > > > > > > > > > > > > > > > > > > > > > > > > > > On Wed, Jan 30, 2019 at 6:43 PM Aston Zhang > > > > > > > > > > > > > <astonlzh...@gmail.com> > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > +1 > > > > > > > > > > > > > > > > > > > > > > > > > > > > Tested with the Dive into Deep Learning book. > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Wed, Jan 30, 2019 at 1:25 PM Steffen Rochel > > > > > > > > > > > > > > < > > > > > > > > > > > > steffenroc...@gmail.com> > > > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Thanks Carin and Yuxi. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Committers and PMC members - please test and > > > > > > > > > > > > > > > send > > > > your > > > > > > vote > > > > > > > > to > > > > > > > > > > > > release > > > > > > > > > > > > > > > Apache MXNet (incubating) v1.4.0. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Regards, > > > > > > > > > > > > > > > Steffen > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Wed, Jan 30, 2019 at 10:55 AM Yuxi Hu > > > > > > > > > > > > > > > <darreny...@gmail.com> > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > +1 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > verified the training throughput for > > > > > > > > > > > > > > > > resnet50_v1 > > > > > looks > > > > > > > > > > > > > > > > normal > > > > > > > > > > > > > compared > > > > > > > > > > > > > > to > > > > > > > > > > > > > > > > 1.3.1 release > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Tue, Jan 29, 2019 at 3:36 PM Carin > > > > > > > > > > > > > > > > Meier < > > > > > > > > > > > carinme...@gmail.com> > > > > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > +1 - checked out from the release tag > > > > > > > > > > > > > > > > > +and built > > > > and > > > > > > > > tested > > > > > > > > > > > > > > > Scala/Clojure > > > > > > > > > > > > > > > > > package. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Sat, Jan 26, 2019 at 8:53 PM Steffen > > > > > > > > > > > > > > > > > Rochel > > > < > > > > > > > > > > > > > > > steffenroc...@gmail.com> > > > > > > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Dear MXNet community, > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > This is the vote to release Apache > > > > > > > > > > > > > > > > > > MXNet > > > > > > (incubating) > > > > > > > > > > > > > > > > > > version > > > > > > > > > > > > > > v1.4.0. > > > > > > > > > > > > > > > > > > Voting will start today, Saturday > > > > > > > > > > > > > > > > > > January 26th 6pm PST > > > and > > > > > will > > > > > > > > > > > > > > > > > > close on > > > > > > > > > > > > > > > Wednesday, > > > > > > > > > > > > > > > > > > January 30th 7pm PST. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Link to release notes: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/MXNET/Apache+MXNet+%28 > > > > > incu > > > > > > > > > > > bating%29+ > > > > > > > > > > > > > > > > > > 1.4.0+Release+Notes > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Link to release candidate: > > > > > > > > > > > > > > > > > > > > > > > > > > https://github.com/apache/incubator-mxnet/releases/tag/ > > > > > > > > > > > > > > > > > > < > > > > > > > > > > > > > > > > > > > > https://github.com/apache/incubator-mxnet/releases/tag/1.4.0 > > > > > > > .r > > > > > > > c2 > > > > > > > > > > > > > > > > > >1.4.0.rc < > > > > > > > > > > > > > > > > > > > > https://dist.apache.org/repos/dist/dev/incubator/mxnet/1.4.0 > > > > > > > .r > > > > > > > c1 > > > > > > > > > > > > > > >2 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Link to source and signatures on > > > > > > > > > > > > > > > > > > apache dist > > > > > > server: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://dist.apache.org/repos/dist/dev/incubator/mxnet/1.4.0.r > > > > > > c2 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Please remember to TEST first before > > > > > > > > > > > > > > > > > > voting > > > > > > > > accordingly: > > > > > > > > > > > > > > > > > > +1 = approve > > > > > > > > > > > > > > > > > > +0 = no opinion > > > > > > > > > > > > > > > > > > -1 = disapprove (provide reason) > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Best regards, Steffen > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > > > > > > > Yuxi(Darren) Hu, Ph.D. > > > > > > > > > > > > > > > > Software Development Engineer Amazon Web > > > > > > > > > > > > > > > > Services > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
