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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2020/01/15 07:52:41 UTC

[GitHub] [incubator-mxnet] ronnac opened a new issue #17315: mvn install scala package sigsev mxnet::TShape::Size()

ronnac opened a new issue #17315: mvn install scala package sigsev mxnet::TShape::Size()
URL: https://github.com/apache/incubator-mxnet/issues/17315
 
 
   ## Description
   mvn install of the scala package fails on armhf 32bit with SIGSEGV at 
   Building MXNet Scala Package - Core INTERNAL  [6/12] 
   T E S T S
   test Visualize
   Problematic frame:                           
   # C  [libmxnet.so+0x929e54]  mxnet::TShape::Size() const+0x10
   
   ### Error Messages       
   ```
   [INFO]                                         [INFO] --------------------< org.apache.mxnet:mxnet-core >---------------------               [INFO] Building MXNet Scala Package - Core INTERNAL                      [6/12]               [INFO] --------------------------------[ jar ]---------------------------------               [INFO]                                         [INFO] --- maven-enforcer-plugin:1.4.1:enforce (enforce-maven-version) @ mxnet-core ---       [INFO]                                         [INFO] --- directory-maven-plugin:0.1:directory-of (directories) @ mxnet-core ---             [INFO] Directory of org.apache.mxnet:mxnet-parent set to: /root/mxnet/scala-package           [INFO]                                         [INFO] --- scala-maven-plugin:3.4.4:add-source (compile) @ mxnet-core ---                     [INFO] Add Source directory: /root/mxnet/scala-package/core/src/main/scala                    [INFO] Add Test Source directory: /root/mxnet/scala-package/core/src/test/scala               [INFO]                                         [INFO] --- exec-maven-plugin:1.6.0:exec (init-build-flavor) @ mxnet-core ---                  ldd: /root/mxnet/scala-package/core/../lib/libmxnet.so: No such file or directory             [INFO]                                         [INFO] --- properties-maven-plugin:1.0.0:read-project-properties (read-properties) @ mxnet-core ---                                          [INFO]                                         [INFO] --- exec-maven-plugin:1.6.0:exec (apidoc-generation) @ mxnet-core ---                  [INFO]                                         [INFO] --- maven-remote-resources-plugin:1.5:process (process-resource-bundles) @ mxnet-core ---                                             [INFO]                                         [INFO] --- maven-resources-plugin:2.7:resources (default-resources) @ mxnet-core ---          [INFO] Using 'UTF-8' encoding to copy filtered resources.                                     [INFO] skip non existing resourceDirectory /root/mxnet/scala-package/core/src/main/resources  [INFO] Copying 3 resources                     [INFO]                                         [INFO] --- maven-compiler-plugin:3.3:compile (default-compile) @ mxnet-core ---               [INFO] Not compiling main sources              [INFO]                                         [INFO] --- scala-maven-plugin:3.4.4:compile (compile) @ mxnet-core ---                        [INFO] /root/mxnet/scala-package/core/src/main/scala:-1: info: compiling                      [INFO] Compiling 78 source files to /root/mxnet/scala-package/core/target/classes at 1579013383658                                           [INFO] compiler plugin: BasicArtifact(org.scalamacros,paradise_2.11.8,2.1.0,null)             [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/Executor.scala:139: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead  [WARNING]     val argArrays = inArgs.map(new NDArray(_)).toArray                              [WARNING]                                ^     [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/Executor.scala:141: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead  [WARNING]       if (handle == 0) null else new NDArray(handle)).toArray                       [WARNING]                                  ^   [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/Executor.scala:142: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead  [WARNING]     val auxArrays = auxStates.map(new NDArray(_)).toArray                           [WARNING]                                   ^  [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/Executor.scala:163: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead  [WARNING]         val nd = new NDArray(ele, addToCollector = false)                           [WARNING]                  ^                   [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/Monitor.scala:54: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead    [WARNING]         val array = new NDArray(arr, writable = false, addToCollector = false)      [WARNING]                     ^                [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/NDArray.scala:129: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead   [WARNING]           case 0 => new NDArray(ele._1)                                             [WARNING]                     ^                [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/NDArray.scala:234: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead   [WARNING]     new NDArray(handle = NDArray.newAllocHandle(shape, context, delayAlloc = false, dtype))                                        [WARNING]     ^                                [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/NDArray.scala:691: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead   [WARNING]     (names.toArray, handles.map(new NDArray(_)).toArray)                            [WARNING]                                 ^    [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/NDArray.scala:737: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead   [WARNING]     new NDArray(handleRef.value)     [WARNING]     ^                                [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/NDArray.scala:1294: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead  [WARNING]     val ret = new NDArray(NDArray.newAllocHandle(shape, ctx, delayAlloc = true, dtype = dtype))                                    [WARNING]               ^                      [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/Operator.scala:75: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead   [WARNING]           tensors(tags(i)) += new NDArray(ndarraies(i), writable = true, addToCollector = false)                                   [WARNING]                               ^      [WARNING] /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/Operator.scala:77: warning: constructor NDArray in class NDArray is deprecated: Please use ResourceScope instead   [WARNING]           tensors(tags(i)) += new NDArray(ndarraies(i), writable = false, addToCollector = false)                                  [WARNING]                               ^      [WARNING] 12 warnings found                    [INFO] prepare-compile in 0 s                  [INFO] compile in 197 s                        [INFO]                                         [INFO] --- maven-resources-plugin:2.7:testResources (default-testResources) @ mxnet-core ---  [INFO] Using 'UTF-8' encoding to copy filtered resources.                                     [INFO] Copying 1 resource                      [INFO] Copying 3 resources                     [INFO]                                         [INFO] --- maven-compiler-plugin:3.3:testCompile (default-testCompile) @ mxnet-core ---       [INFO] Not compiling test sources              [INFO]                                         [INFO] --- scala-maven-plugin:3.4.4:testCompile (compile) @ mxnet-core ---                    [INFO] Nothing to compile - all classes are up to date                                        [INFO]                                         [INFO] --- maven-surefire-plugin:2.22.0:test (default-test) @ mxnet-core ---                  [INFO] Surefire report directory: /root/mxnet/scala-package/core/target/surefire-reports      [INFO]                                         [INFO] -------------------------------------------------------                                [INFO]  T E S T S                              [INFO] -------------------------------------------------------                                [INFO]                                         [INFO] Results:                                [INFO]                                         [INFO] Tests run: 0, Failures: 0, Errors: 0, Skipped: 0                                       [INFO]                                         [INFO]                                         [INFO] --- maven-jar-plugin:3.0.2:jar (default-jar) @ mxnet-core ---                          [INFO] Building jar: /root/mxnet/scala-package/core/target/mxnet-core-INTERNAL.jar            [INFO]                                         [INFO] --- maven-site-plugin:3.7:attach-descriptor (attach-descriptor) @ mxnet-core ---       [INFO] Skipping because packaging 'jar' is not pom.                                           [INFO]                                         [INFO] --- maven-source-plugin:2.2.1:jar-no-fork (attach-sources) @ mxnet-core ---            [INFO] Building jar: /root/mxnet/scala-package/core/target/mxnet-core-INTERNAL-sources.jar    [INFO]                                         [INFO] >>> scala-maven-plugin:3.4.4:doc-jar (compile) > generate-resources @ mxnet-core >>>   [INFO]                                         [INFO] --- maven-enforcer-plugin:1.4.1:enforce (enforce-maven-version) @ mxnet-core ---       [INFO]                                         [INFO] --- directory-maven-plugin:0.1:directory-of (directories) @ mxnet-core ---             [INFO] Directory of org.apache.mxnet:mxnet-parent set to: /root/mxnet/scala-package           [INFO]                                         [INFO] --- scala-maven-plugin:3.4.4:add-source (compile) @ mxnet-core ---                     [INFO]                                         [INFO] --- exec-maven-plugin:1.6.0:exec (init-build-flavor) @ mxnet-core ---                  ldd: /root/mxnet/scala-package/core/../lib/libmxnet.so: No such file or directory             [INFO]                                         [INFO] --- properties-maven-plugin:1.0.0:read-project-properties (read-properties) @ mxnet-core ---                                          [INFO]                                         [INFO] --- exec-maven-plugin:1.6.0:exec (apidoc-generation) @ mxnet-core ---                  [INFO]                                         [INFO] --- maven-remote-resources-plugin:1.5:process (process-resource-bundles) @ mxnet-core ---                                             [INFO]                                         [INFO] <<< scala-maven-plugin:3.4.4:doc-jar (compile) < generate-resources @ mxnet-core <<<   [INFO]                                         [INFO]                                         [INFO] --- scala-maven-plugin:3.4.4:doc-jar (compile) @ mxnet-core ---                        model contains 281 documentable templates      /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/module/BaseModule.scala:381: warning: Could not find any member to link for "IOException".                                     /**                                            ^                                            /root/mxnet/scala-package/core/src/main/scala/org/apache/mxnet/NDArray.scala:533: warning: Could not find any member to link for "IllegalArgumentException".                                  /**                                            ^                                            two warnings found                             [INFO] Building jar: /root/mxnet/scala-package/core/target/mxnet-core-INTERNAL-javadoc.jar    [INFO]                                         [INFO] --- scalatest-maven-plugin:1.0:test (test) @ mxnet-core ---                            Discovery starting.                            Discovery completed in 17 seconds, 762 milliseconds.                                          Run starting. Expected test count is: 180      NDArraySuite:                                  2020-01-14 15:56:41,779 [ScalaTest-main-running-NDArraySuite] [MXNetJVM] [INFO] - Try loading mxnet-scala from native path.                  - to java array                                - to scalar                                    - to sparse                                    - to float 64 scalar                           - call toScalar on an ndarray which is not a scalar                                           - size and shape                               - dtype                                        - set scalar value                             - copy from java array                         - create NDArray based on Java Matrix          - test Visualize                               #                                              # A fatal error has been detected by the Java Runtime Environment:                            #                                              #  SIGSEGV (0xb) at pc=0xd81e2e54, pid=13067, tid=0xf0b4f460                                  #                                              # JRE version: OpenJDK Runtime Environment (8.0_232-b09) (build 1.8.0_232-8u232-b09-0ubuntu1~19.04.1-b09)                                    # Java VM: OpenJDK Client VM (25.232-b09 mixed mode linux-aarch32 )                           # Problematic frame:                           # C  [libmxnet.so+0x929e54]  mxnet::TShape::Size() const+0x10                                 #                                              # Core dump written. Default location: /root/mxnet/scala-package/core/core or core.13067      #                                              # An error report file with more information is saved as:                                     # /root/mxnet/scala-package/core/hs_err_pid13067.log                                          #                                              # If you would like to submit a bug report, please visit:                                     #   http://bugreport.java.com/bugreport/crash.jsp                                             # The crash happened outside the Java Virtual Machine in native code.                         # See problematic frame for where to report the bug.                                          #                                              Aborted (core dumped)                          [INFO] ------------------------------------------------------------------------               [INFO] Reactor Summary:                        [INFO]                                         [INFO] MXNet Scala Package - Parent INTERNAL .............. SUCCESS [ 33.529 s]               [INFO] MXNet Scala Package - Initializer INTERNAL ......... SUCCESS [ 39.652 s]               [INFO] MXNet Scala Package - Initializer Native INTERNAL .. SUCCESS [  7.803 s]               [INFO] MXNet Scala Package - Macros INTERNAL .............. SUCCESS [ 37.122 s]               [INFO] MXNet Scala Package - Native INTERNAL .............. SUCCESS [  8.447 s]               [INFO] MXNet Scala Package - Core INTERNAL ................ FAILURE [07:08 min]               [INFO] MXNet Scala Package - Inference INTERNAL ........... SKIPPED                           [INFO] MXNet Scala Package - Examples INTERNAL ............ SKIPPED                           [INFO] MXNet Scala Package - Spark ML INTERNAL ............ SKIPPED                           [INFO] Assembly Scala Package INTERNAL .................... SKIPPED                           [INFO] MXNet Scala Package - Full linux-x86_64-only 1.6.0-SNAPSHOT SKIPPED                    [INFO] MXNet Scala Package - Full linux-x86_64-only 1.6.0-SNAPSHOT SKIPPED                    [INFO] ------------------------------------------------------------------------               [INFO] BUILD FAILURE                           [INFO] ------------------------------------------------------------------------               [INFO] Total time:  09:18 min                  [INFO] Finished at: 2020-01-14T15:56:44+01:00  [INFO] ------------------------------------------------------------------------               [ERROR] Failed to execute goal org.scalatest:scalatest-maven-plugin:1.0:test (test) on project mxnet-core: There are test failures -> [Help 1]                                              org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.scalatest:scalatest-maven-plugin:1.0:test (test) on project mxnet-core: There are test failures              at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)           at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)           at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)           at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)                                 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)                                  at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)                    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)                                                  at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)                            at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)                            at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)                              at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)                                  at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)                                   at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)                                     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)                               at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)             at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke (Method.java:498)                                          at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)       at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)               at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)             Caused by: org.apache.maven.plugin.MojoFailureException: There are test failures                  at org.scalatest.tools.maven.TestMojo.execute (TestMojo.java:107)                             at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)                                        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)           at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)           at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)           at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)                                 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)                                  at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)                    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)                                                  at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)                            at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)                            at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)                              at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)                                  at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)                                   at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)                                     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)                               at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)             at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke (Method.java:498)                                          at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)       at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)               at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)             [ERROR]                                        [ERROR] Re-run Maven using the -X switch to enable full debug logging.                        [ERROR]                                        [ERROR] For more information about the errors and possible solutions, please read the following articles:                                    [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException        [ERROR]                                        [ERROR] After correcting the problems, you can resume the build with the command              [ERROR]   mvn <goals> -rf :mxnet-core          root@localhost ~/m/scala-package#
   ```
   
   ## To Reproduce
   (If you developed your own code, please provide a short script that reproduces the error. For existing examples, please provide link.)
   
   ### Steps to reproduce
   (Paste the commands you ran that produced the error.)
   
   On an armhf 32bit device with linux disco :                                     
   1. build opencv3.4 from source
   build mxnet from source with cmake
   cd ~/mxnet/scala package
   mvn install -e
   
   ## What have you tried to solve it?
   
   
   ## Environment
   
   ```
   ----------Python Info----------                ('Version      :', '2.7.16')                   
   ('Compiler     :', 'GCC 8.3.0')                
   ('Build        :', ('default', 'Oct  7 2019 17:36:04'))                                       
   ('Arch         :', ('32bit', ''))              
   ------------Pip Info-----------                
   No corresponding pip install for current python.                                              ----------MXNet Info-----------                
   No MXNet installed.                            
   ----------System Info----------                ('Platform     :', 'Linux-4.4.111-16046393-armv8l-with-Ubuntu-19.04-disco')                   
   ('system       :', 'Linux')                    
   ('node         :', 'localhost')                
   ('release      :', '4.4.111-16046393')         
   ('version      :', '#1 SMP PREEMPT Wed Oct 9 14:44:51 KST 2019')                              
   ----------Hardware Info----------              
   ('machine      :', 'armv8l')                   
   ('processor    :', 'armv8l')                   
   lscpu: failed to determine number of CPUs: /sys/devices/system/cpu/possible: No such file or directory     
   ----------cat /proc/cpuinfo----------                              processor       : 0                            
   model name      : ARMv8 Processor rev 4 (v8l)  
   BogoMIPS        : 52.00                        
   Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt lpae evtstrm aes pmull sha1 sha2 crc32                       
   CPU implementer : 0x41                         
   CPU architecture: 8                            
   CPU variant     : 0x0                          
   CPU part        : 0xd03                        
   CPU revision    : 4                   
                                                           processor       : 1                            
   model name      : ARMv8 Processor rev 4 (v8l)  
   BogoMIPS        : 52.00                        Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt lpae evtstrm aes pmull sha1 sha2 crc32                       
   CPU implementer : 0x41                         
   CPU architecture: 8                            
   CPU variant     : 0x0                          
   CPU part        : 0xd03                        
   CPU revision    : 4               
                                                               processor       : 2                            
   model name      : ARMv8 Processor rev 4 (v8l)  
   BogoMIPS        : 52.00                        Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt lpae evtstrm aes pmull sha1 sha2 crc32                       CPU implementer : 0x41                         CPU architecture: 8                            
   CPU variant     : 0x0                          
   CPU part        : 0xd03                        
   CPU revision    : 4                      
                                                        processor       : 3                            
   model name      : ARMv8 Processor rev 4 (v8l)  
   BogoMIPS        : 52.00                        Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt lpae evtstrm aes pmull sha1 sha2 crc32                       
   CPU implementer : 0x41                         
   CPU architecture: 8                            
   CPU variant     : 0x0                          
   CPU part        : 0xd03                        
   CPU revision    : 4                       
                                                       processor       : 4                            
   model name      : ARMv8 Processor rev 4 (v8l)  
   BogoMIPS        : 52.00                        
   Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt lpae evtstrm aes pmull sha1 sha2 crc32                       CPU implementer : 0x41                         CPU architecture: 8                            
   CPU variant     : 0x0                          
   CPU part        : 0xd03                        
   CPU revision    : 4                       
                                                       processor       : 5                            
   model name      : ARMv8 Processor rev 4 (v8l)  
   BogoMIPS        : 52.00                        Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt lpae evtstrm aes pmull sha1 sha2 crc32                       
   CPU implementer : 0x41                         
   CPU architecture: 8                            
   CPU variant     : 0x0                          
   CPU part        : 0xd03                        
   CPU revision    : 4                    
                                                          processor       : 6                            
   model name      : ARMv8 Processor rev 2 (v8l)  
   BogoMIPS        : 52.00                        
   Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt lpae evtstrm aes pmull sha1 sha2 crc32                       CPU implementer : 0x41                         CPU architecture: 8                            
   CPU variant     : 0x0                         
   CPU part        : 0xd09                        
   CPU revision    : 2                       
                                                       processor       : 7                            
   model name      : ARMv8 Processor rev 2 (v8l)  
   BogoMIPS        : 52.00                        
   Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt lpae evtstrm aes pmull sha1 sha2 crc32                       
   CPU implementer : 0x41                         
   CPU architecture: 8                            
   CPU variant     : 0x0                          
   CPU part        : 0xd09                        
   CPU revision    : 2
   
   ----------Network Test----------               Setting timeout: 10                            Timing for PYPI: https://pypi.python.org/pypi/pip, DNS: 0.0807 sec, LOAD: 1.7457 sec.        
   Timing for D2L: http://d2l.ai, DNS: 0.0656 sec, LOAD: 0.2946 sec.                            
   Timing for FashionMNIST: https://repo.mxnet.io/gluon/dataset/fashion-mnist/train-labels-idx1-ubyte.gz, DNS: 0.2743 sec, LOAD: 0.9302 sec.   
   Timing for Conda: https://repo.continuum.io/pkgs/free/, DNS: 0.0487 sec, LOAD: 0.5180 sec.    Timing for MXNet: https://github.com/apache/incubator-mxnet, DNS: 0.0375 sec, LOAD: 0.8872 sec.                                              Timing for GluonNLP: http://gluon-nlp.mxnet.io, DNS: 0.0857 sec, LOAD: 1.1839 sec.            Timing for D2L (zh-cn): http://zh.d2l.ai, DNS: 0.0722 sec, LOAD: 0.4554 sec.                  Timing for GluonNLP GitHub: https://github.com/dmlc/gluon-nlp, DNS: 0.0250 sec, LOAD: 0.7598 sec.
   ```
   

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