## Description
compile with cpp-package ok but when use the libmxnet.so from cpp, some header
files go wrong
## Environment info (Required)
----------Python Info----------
('Version :', '2.7.12')
('Compiler :', 'GCC 5.4.0 20160609')
('Build :', ('default', 'Dec 4 2017 14:50:18'))
('Arch :', ('64bit', 'ELF'))
------------Pip Info-----------
('Version :', '10.0.1')
('Directory :', '/usr/local/lib/python2.7/dist-packages/pip')
----------MXNet Info-----------
('Version :', '1.2.0')
('Directory :', '/usr/local/lib/python2.7/dist-packages/mxnet')
('Commit Hash :', '73d879cf6439eb83b337fcbf6c743dbf385b9766')
----------System Info----------
('Platform :', 'Linux-4.15.0-34-generic-x86_64-with-Ubuntu-16.04-xenial')
('system :', 'Linux')
('node :', 'xyliu-B250M-D3H')
('release :', '4.15.0-34-generic')
('version :', '#37~16.04.1-Ubuntu SMP Tue Aug 28 10:44:06 UTC 2018')
----------Hardware Info----------
('machine :', 'x86_64')
('processor :', 'x86_64')
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 158
Model name: Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
Stepping: 9
CPU MHz: 4099.257
CPU max MHz: 4200.0000
CPU min MHz: 800.0000
BogoMIPS: 7200.00
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 8192K
NUMA node0 CPU(s): 0-7
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl
xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64
monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2
x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm
3dnowprefetch cpuid_fault invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow
vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms
invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1
xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp flush_l1d
----------Network Test----------
Setting timeout: 10
Timing for MXNet: https://github.com/apache/incubator-mxnet, DNS: 0.0008 sec,
LOAD: 1.2187 sec.
Timing for PYPI: https://pypi.python.org/pypi/pip, DNS: 0.0022 sec, LOAD:
3.9907 sec.
Error open FashionMNIST:
https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/gluon/dataset/fashion-mnist/train-labels-idx1-ubyte.gz,
<urlopen error ('_ssl.c:574: The handshake operation timed out',)>, DNS
finished in 0.261016130447 sec.
Timing for Conda: https://repo.continuum.io/pkgs/free/, DNS: 0.0031 sec, LOAD:
0.9128 sec.
Error open Gluon Tutorial(en): http://gluon.mxnet.io, <urlopen error
('_ssl.c:574: The handshake operation timed out',)>, DNS finished in
0.618535995483 sec.
Error open Gluon Tutorial(cn): https://zh.gluon.ai, <urlopen error
('_ssl.c:574: The handshake operation timed out',)>, DNS finished in
1.5422270298 sec.
Package used (Python/R/Scala/Julia):
(I'm using cpp-package)
For Scala user, please provide:
1. Java version: (`java -version`)
2. Maven version: (`mvn -version`)
3. Scala runtime if applicable: (`scala -version`)
For R user, please provide R `sessionInfo()`:
## Build info (Required if built from source)
Compiler (gcc/clang/mingw/visual studio):
g++
MXNet commit hash:
(Paste the output of `git rev-parse HEAD` here.)
597a637fb1b8fa5b16331218cda8be61ce0ee202
Build config:
(Paste the content of config.mk, or the build command.)
compile OK
## Error Message:
typical errors:
3rParty/dmlc-core/include/dmlc/base.h:245:1: error: template with C linkage
template<typename T>
3rParty/dmlc-core/include/dmlc/base.h:282:14: error: no match for 'operator
[]'(operand types are 'const string {aka const std::__cxx11::basic_string
<char>}' and 'int') return &str[0]
/usr/include/x86_64-linux-gnu/bits/waitstatus.h:79:27:error:redeclaration of
'unsigned int wait::<anonymous struct>::__w_retcode' unsigned int __w_retcode:8;
and other similar errors.
## Minimum reproducible example
cpp code example:
#include <chrono>
#include "mxnet-cpp/MxNetCpp.h"
using namespace std;
using namespace mxnet::cpp;
Symbol mlp(const vector<int> &layers)
{
auto x = Symbol::Variable("X");
auto label = Symbol::Variable("label");
vector<Symbol> weights(layers.size());
vector<Symbol> biases(layers.size());
vector<Symbol> outputs(layers.size());
for (size_t i = 0; i < layers.size(); ++i)
{
weights[i] = Symbol::Variable("w" + to_string(i));
biases[i] = Symbol::Variable("b" + to_string(i));
Symbol fc = FullyConnected(
i == 0 ? x : outputs[i - 1], // data
weights[i],
biases[i],
layers[i]);
outputs[i] = i == layers.size() - 1 ? fc : Activation(fc,
ActivationActType::kRelu);
}
return SoftmaxOutput(outputs.back(), label);
}
int main(int argc, char** argv)
{
const int image_size = 28;
const vector<int> layers{ 128, 64, 10 };
const int batch_size = 100;
const int max_epoch = 10;
const float learning_rate = 0.1;
const float weight_decay = 1e-2;
auto train_iter = MXDataIter("MNISTIter")
.SetParam("image", "../data/train-images.idx3-ubyte")
.SetParam("label", "../data/train-labels.idx1-ubyte")
.SetParam("batch_size", batch_size)
.SetParam("flat", 1)
.CreateDataIter();
auto val_iter = MXDataIter("MNISTIter")
.SetParam("image", "../data/t10k-images.idx3-ubyte")
.SetParam("label", "../data/t10k-labels.idx1-ubyte")
.SetParam("batch_size", batch_size)
.SetParam("flat", 1)
.CreateDataIter();
auto net = mlp(layers);
Context ctx = Context::cpu(); // Use CPU for training
//Context ctx = Context::gpu();
std::map<string, NDArray> args;
args["X"] = NDArray(Shape(batch_size, image_size*image_size), ctx);
args["label"] = NDArray(Shape(batch_size), ctx);
// Let MXNet infer shapes other parameters such as weights
net.InferArgsMap(ctx, &args, args);
// Initialize all parameters with uniform distribution U(-0.01, 0.01)
auto initializer = Uniform(0.01);
for (auto& arg : args)
{
// arg.first is parameter name, and arg.second is the value
initializer(arg.first, &arg.second);
}
// Create sgd optimizer
Optimizer* opt = OptimizerRegistry::Find("sgd");
opt->SetParam("rescale_grad", 1.0 / batch_size)
->SetParam("lr", learning_rate)
->SetParam("wd", weight_decay);
// Create executor by binding parameters to the model
auto *exec = net.SimpleBind(ctx, args);
auto arg_names = net.ListArguments();
// Start training
for (int iter = 0; iter < max_epoch; ++iter)
{
int samples = 0;
train_iter.Reset();
auto tic = chrono::system_clock::now();
while (train_iter.Next())
{
samples += batch_size;
auto data_batch = train_iter.GetDataBatch();
// Set data and label
data_batch.data.CopyTo(&args["X"]);
data_batch.label.CopyTo(&args["label"]);
// Compute gradients
exec->Forward(true);
exec->Backward();
// Update parameters
for (size_t i = 0; i < arg_names.size(); ++i)
{
if (arg_names[i] == "X" || arg_names[i] == "label") continue;
opt->Update(i, exec->arg_arrays[i], exec->grad_arrays[i]);
}
}
auto toc = chrono::system_clock::now();
Accuracy acc;
val_iter.Reset();
while (val_iter.Next())
{
auto data_batch = val_iter.GetDataBatch();
data_batch.data.CopyTo(&args["X"]);
data_batch.label.CopyTo(&args["label"]);
// Forward pass is enough as no gradient is needed when evaluating
exec->Forward(false);
acc.Update(data_batch.label, exec->outputs[0]);
}
float duration = chrono::duration_cast<chrono::milliseconds>(toc -
tic).count() / 1000.0;
LG << "Epoch: " << iter << " " << samples / duration << " samples/sec
Accuracy: " << acc.Get();
}
delete exec;
MXNotifyShutdown();
return 0;
}
##CMakelists.txt
project(mxnet_cpp_test)
cmake_minimum_required(VERSION 2.8)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -std=c++11 -W")
include_directories(
${CMAKE_CURRENT_SOURCE_DIR}/../3rParty/mxnet/inc/
${CMAKE_CURRENT_SOURCE_DIR}/../3rParty/dmlc-core/include/dmlc
${CMAKE_CURRENT_SOURCE_DIR}/../3rParty/mxnet/inc/cpp-package/include
)
link_directories(${CMAKE_CURRENT_SOURCE_DIR}/../3rdParty/mxnet/lib/)
add_executable(mxnet_cpp_test mxnet_cpp_test.cpp)
target_link_libraries(
mxnet_cpp_test
${CMAKE_CURRENT_SOURCE_DIR}/../3rdParty/mxnet/lib/libmxnet.so)
Whatever I use cmaklists.txt or write the makefile directly, the results are
the same. I don't know how to fix this issue.
[ Full content available at:
https://github.com/apache/incubator-mxnet/issues/12543 ]
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