TestCase SegementFault, Testing MNN in ARM32v7REV0 , Linux

[nankingrider]

stack and registers
using gcc cross-tools 4.9.3
not showing every time , mostly no stack trace is printed.

Save AllTensors to output/*.txt

Open Model wlan_model.mnn
[New Thread 0xb694f450 (LWP 12463)]
[New Thread 0xb614f450 (LWP 12464)]
[New Thread 0xb594f450 (LWP 12469)]
test_main, 199, cost time: 83.486000 ms
===========> Session Resize Done.
===========> Session Start running...
Input: 1, 6, 0, 0
W,H,C,B: 0 X 64 X 0 X 1, L1/MatMul : 0
W,H,C,B: 0 X 64 X 0 X 1, L1/BiasAdd : 0
W,H,C,B: 0 X 64 X 0 X 1, L1/Relu : 0
W,H,C,B: 0 X 128 X 0 X 1, L2/MatMul : 0
W,H,C,B: 0 X 128 X 0 X 1, L2/BiasAdd : 0
W,H,C,B: 0 X 128 X 0 X 1, L2/Relu : 0
W,H,C,B: 0 X 64 X 0 X 1, L3/MatMul : 0
W,H,C,B: 0 X 64 X 0 X 1, L3/BiasAdd : 0
W,H,C,B: 0 X 64 X 0 X 1, L3/Relu : 0
W,H,C,B: 0 X 2 X 0 X 1, logits/MatMul : 0
W,H,C,B: 0 X 2 X 0 X 1, logits/BiasAdd : 0

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb594f450 (LWP 12469)]
0xb6f25eec in MNN::ThreadPool::ThreadPool(int)::{lambda()#1}::operator()() const () at /home/MNN-master/source/backend/cpu/ThreadPool.cpp:176
176 /home/MNN-master/source/backend/cpu/ThreadPool.cpp: No such file or directory.
(gdb) bt
#0 0xb6f25eec in MNN::ThreadPool::ThreadPool(int)::{lambda()#1}::operator()() const () at /home/MNN-master/source/backend/cpu/ThreadPool.cpp:176
#1 0xb6f2c4e4 in std::_Bind_simple<MNN::ThreadPool::ThreadPool(int)::<lambda()>()>::_M_invoke<>(std::_Index_tuple<>) (this=0xd7714)
at /opt/cross_tools/arm32le_4.1_ek/gcc/arm-linux-gnueabi/include/c++/4.9.3/functional:1700
#2 0xb6f2c40c in std::_Bind_simple<MNN::ThreadPool::ThreadPool(int)::<lambda()>()>::operator()(void) (this=0xd7714) at /opt/cross_tools/arm32le_4.1_ek/gcc/arm-linux-gnueabi/include/c++/4.9.3/functional:1688
#3 0xb6f2c374 in std::thread::_Impl<std::_Bind_simple<MNN::ThreadPool::ThreadPool(int)::<lambda()>()> >::_M_run(void) (this=0xd7708) at /opt/cross_tools/arm32le_4.1_ek/gcc/arm-linux-gnueabi/include/c++/4.9.3/thread:115
#4 0xb6c74a40 in ?? () from /usr/lib/libstdc++.so.6
#5 0xb6cb22e8 in start_thread () from /lib/libpthread.so.0
#6 0xb6a4a54c in ?? () from /lib/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) info registers
r0 0xb594ede4 3046436324
r1 0x81 129
r2 0x0 0
r3 0x736e6f43 1936617283
r4 0xd76f0 882416
r5 0xb6ca4000 3066707968
r6 0xb594f668 3046438504
r7 0x152 338
r8 0x0 0
r9 0xb594ef90 3046436752
r10 0xb594f910 3046439184
r11 0xb594ef8c 3046436748
r12 0xb6cd5000 3066908672
sp 0xb594edd8 0xb594edd8
lr 0xb6e47280 3068424832
pc 0xb6f25eec 0xb6f25eec <MNN::ThreadPool::ThreadPool(int)::{lambda()#1}::operator()() const+408>
cpsr 0x20000010 536870928
(gdb)

[jxt1234]

Does "set MNN_USE_THREAD_POOL = off
use openmp " crash?

[nankingrider]

set MNN_USE_THREAD_POOL OFF
set MNN_OPENMP ON

compile failed

PEK1000248505:/home/MNN-master/build # make -j4
Scanning dependencies of target MNN_SCHEMA
*** done ***
[ 0%] Built target MNN_SCHEMA
Scanning dependencies of target MNN
[ 1%] Building CXX object CMakeFiles/MNN.dir/source/core/BackendFactory.cpp.o
[ 1%] Building C object CMakeFiles/MNN.dir/source/core/MNNMemoryUtils.c.o
[ 1%] Building CXX object CMakeFiles/MNN.dir/source/core/AutoTime.cpp.o
[ 1%] Building CXX object CMakeFiles/MNN.dir/source/core/Backend.cpp.o
arm-linux-gnueabi-g++: error: NOTFOUND: No such file or directory
arm-linux-gnueabi-g++: error: NOTFOUND: No such file or directory
arm-linux-gnueabi-g++: error: NOTFOUND: No such file or directory
arm-linux-gnueabi-gcc: error: NOTFOUND: No such file or directory
CMakeFiles/MNN.dir/build.make:86: recipe for target 'CMakeFiles/MNN.dir/source/core/AutoTime.cpp.o' failed
make[2]: *** [CMakeFiles/MNN.dir/source/core/AutoTime.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
CMakeFiles/MNN.dir/build.make:110: recipe for target 'CMakeFiles/MNN.dir/source/core/Backend.cpp.o' failed
make[2]: *** [CMakeFiles/MNN.dir/source/core/Backend.cpp.o] Error 1
CMakeFiles/MNN.dir/build.make:134: recipe for target 'CMakeFiles/MNN.dir/source/core/BackendFactory.cpp.o' failed
make[2]: *** [CMakeFiles/MNN.dir/source/core/BackendFactory.cpp.o] Error 1
CMakeFiles/MNN.dir/build.make:62: recipe for target 'CMakeFiles/MNN.dir/source/core/MNNMemoryUtils.c.o' failed
make[2]: *** [CMakeFiles/MNN.dir/source/core/MNNMemoryUtils.c.o] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/MNN.dir/all' failed
make[1]: *** [CMakeFiles/MNN.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2
PEK1000248505:/home/MNN-master/build #

[nankingrider]

set MNN_USE_THREAD_POOL OFF
set MNN_OPENMP OFF

still compile failed

PEK1000248505:/home/MNN-master/build # make -j4
Scanning dependencies of target MNN_SCHEMA
*** done ***
[ 0%] Built target MNN_SCHEMA
Scanning dependencies of target MNN
[ 1%] Building CXX object CMakeFiles/MNN.dir/source/core/BackendFactory.cpp.o
[ 1%] Building C object CMakeFiles/MNN.dir/source/core/MNNMemoryUtils.c.o
[ 1%] Building CXX object CMakeFiles/MNN.dir/source/core/Backend.cpp.o
[ 1%] Building CXX object CMakeFiles/MNN.dir/source/core/AutoTime.cpp.o
[ 2%] Building CXX object CMakeFiles/MNN.dir/source/core/BackendRegister.cpp.o
[ 2%] Building CXX object CMakeFiles/MNN.dir/source/core/BufferAllocator.cpp.o
[ 3%] Building CXX object CMakeFiles/MNN.dir/source/core/Execution.cpp.o
[ 3%] Building CXX object CMakeFiles/MNN.dir/source/core/Interpreter.cpp.o
[ 4%] Building CXX object CMakeFiles/MNN.dir/source/core/Pipeline.cpp.o
[ 4%] Building CXX object CMakeFiles/MNN.dir/source/core/Schedule.cpp.o
[ 5%] Building CXX object CMakeFiles/MNN.dir/source/core/Session.cpp.o
[ 5%] Building CXX object CMakeFiles/MNN.dir/source/core/SizeComputer.cpp.o
[ 6%] Building CXX object CMakeFiles/MNN.dir/source/core/Tensor.cpp.o
[ 6%] Building CXX object CMakeFiles/MNN.dir/source/core/TensorUtils.cpp.o
[ 7%] Building CXX object CMakeFiles/MNN.dir/source/core/WrapExecution.cpp.o
[ 7%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUArgMax.cpp.o
[ 8%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUAsString.cpp.o
[ 8%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUBackend.cpp.o
[ 8%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUBatchMatMul.cpp.o
[ 9%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUBatchToSpaceND.cpp.o
[ 9%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUBinary.cpp.o
[ 10%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUCast.cpp.o
[ 10%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUConcat.cpp.o
[ 11%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUConst.cpp.o
[ 11%] Building CXX object CMakeFiles/MNN.dir/source/backend/cpu/CPUConv2DBackPropFilter.cpp.o
In file included from /home/MNN-master/source/backend/cpu/CPUConv2DBackPropFilter.cpp:10:0:
/home/MNN-master/source/core/Concurrency.h:53:17: fatal error: omp.h: No such file or directory
#include <omp.h>
^
compilation terminated.
CMakeFiles/MNN.dir/build.make:638: recipe for target 'CMakeFiles/MNN.dir/source/backend/cpu/CPUConv2DBackPropFilter.cpp.o' failed
make[2]: *** [CMakeFiles/MNN.dir/source/backend/cpu/CPUConv2DBackPropFilter.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/MNN.dir/all' failed
make[1]: *** [CMakeFiles/MNN.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2
PEK1000248505:/home/MNN-master/build #

[nankingrider]

update:

copy omp.h to ./include then recompile MNN ok

(cp /opt/cross_tools/sysroot-bcm_armv7a-glibc_small/x86_64-wrlinuxsdk-linux/usr/toolchain/lib/gcc/arm-wrs-linux-gnueabi/4.8.1/include/omp.h include/)

this time MNNV2Basic.out worked fine.

maybe MNN should place a omp.h in ./include ?

[Sugaryou]

set MNN_FORBID_MULTI_THREAD ON
set MNN_USE_THREAD_POOL OFF
set MNN_OPENMP OFF

then it worked.

[jxt1234]

The bug in thread pool has been fixed, you can try set MNN_USE_THREAD_POOL ON