PyTorch: The kernel appears to have died. It will restart automatically.

[Jiankai-Sun]

System: Ubuntu 16.04 LTS 64-bit

As the picture shows, after import torch, the kernel died and restarting.

Python version

Python 2.7.12 (default, Nov 19 2016, 06:48:10) 
[GCC 5.4.0 20160609] on linux2

Details:

(python2) jack@jack:~/Documents/Deep Learning with PyTorch: A 60 Minute Blitz$ jupyter notebook
[I 15:26:30.398 NotebookApp] Serving notebooks from local directory: /home/jack/Documents/Deep Learning with PyTorch: A 60 Minute Blitz
[I 15:26:30.398 NotebookApp] 0 active kernels 
[I 15:26:30.398 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/?token=49db8d981f751975f4cb6633164c415cfe141808400a0bdf
[I 15:26:30.398 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 15:26:30.398 NotebookApp] 
    
    Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://localhost:8888/?token=49db8d981f751975f4cb6633164c415cfe141808400a0bdf
[I 15:26:30.834 NotebookApp] Accepting one-time-token-authenticated connection from 127.0.0.1
[29433:29469:0820/152630.858811:ERROR:browser_gpu_channel_host_factory.cc(103)] Failed to launch GPU process.
Created new window in existing browser session.
[I 15:26:35.568 NotebookApp] Creating new notebook in 
[W 15:26:36.333 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20170820152629 (127.0.0.1) 14.65ms referer=http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=python2
[I 15:26:36.434 NotebookApp] Kernel started: f519f0e3-9c12-47e2-becf-fbd97e79c284
[I 15:26:37.219 NotebookApp] Adapting to protocol v5.1 for kernel f519f0e3-9c12-47e2-becf-fbd97e79c284
*** Error in `/home/jack/Applications/pythonEnv/python2/bin/python': free(): invalid pointer: 0x00007f4ad22b1b80 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7f4b0176d7e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x8037a)[0x7f4b0177637a]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x7f4b0177a53c]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libshm.so(_ZNSt6locale5_Impl16_M_install_facetEPKNS_2idEPKNS_5facetE+0x142)[0x7f4ad204b802]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libshm.so(_ZNSt6locale5_ImplC2Em+0x1e3)[0x7f4ad204d953]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libshm.so(_ZNSt6locale18_S_initialize_onceEv+0x15)[0x7f4ad204e8c5]
/lib/x86_64-linux-gnu/libpthread.so.0(+0xea99)[0x7f4b01acea99]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libshm.so(_ZNSt6locale13_S_initializeEv+0x21)[0x7f4ad204e911]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libshm.so(_ZNSt6localeC1Ev+0x13)[0x7f4ad204e953]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libshm.so(_ZNSt8ios_base4InitC1Ev+0xb4)[0x7f4ad20201b4]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libcusparse-652fe42d.so.7.5.18(+0x2a5a14)[0x7f4aaebfba14]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libcusparse-652fe42d.so.7.5.18(+0x2a6aa3)[0x7f4aaebfcaa3]
/home/jack/Applications/pythonEnv/python2/local/lib/python2.7/site-packages/torch/lib/libcusparse-652fe42d.so.7.5.18(+0x335026)[0x7f4aaec8b026]
======= Memory map: ========
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008eb000-00962000 rw-p 002eb000 08:08 3408578                            /home/jack/Applications/pythonEnv/python2/bin/python
00962000-00985000 rw-p 00000000 00:00 0 
02065000-02cfc000 rw-p 00000000 00:00 0                                  [heap]
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7f4afeec0000-7f4afef1e000 r-xp 00000000 08:08 4718621                    /lib/x86_64-linux-gnu/libssl.so.1.0.0
7f4afef1e000-7f4aff11e000 ---p 0005e000 08:08 4718621                    /lib/x86_64-linux-gnu/libssl.so.1.0.0
7f4aff11e000-7f4aff122000 r--p 0005e000 08:08 4718621                    /lib/x86_64-linux-gnu/libssl.so.1.0.0
7f4aff122000-7f4aff129000 rw-p 00062000 08:08 4718621                    /lib/x86_64-linux-gnu/libssl.so.1.0.0
7f4aff129000-7f4aff13e000 r-xp 00000000 08:08 5245608                    /usr/lib/python2.7/lib-dynload/_ssl.x86_64-linux-gnu.so
7f4aff13e000-7f4aff33d000 ---p 00015000 08:08 5245608                    /usr/lib/python2.7/lib-dynload/_ssl.x86_64-linux-gnu.so
7f4aff33d000-7f4aff33e000 r--p 00014000 08:08 5245608                    /usr/lib/python2.7/lib-dynload/_ssl.x86_64-linux-gnu.so
7f4aff33e000-7f4aff342000 rw-p 00015000 08:08 5245608                    /usr/lib/python2.7/lib-dynload/_ssl.x86_64-linux-gnu.so
7f4aff342000-7f4aff349000 r-xp 00000000 08:08 5120655                    /usr/lib/x86_64-linux-gnu/libffi.so.6.0.4
7f4aff349000-7f4aff548000 ---p 00007000 08:08 5120655                    /usr/lib/x86_64-linux-gnu/libffi.so.6.0.4
7f4aff548000-7f4aff549000 r--p 00006000 08:08 5120655                    /usr/lib/x86_64-linux-gnu/libffi.so.6.0.4
7f4aff549000-7f4aff54a000 rw-p 00007000 08:08 5120655                    /usr/lib/x86_64-linux-gnu/libffi.so.6.0.4
7f4aff54a000-7f4aff568000 r-xp 00000000 08:08 5245596                    /usr/lib/python2.7/lib-dynload/_ctypes.x86_64-linux-gnu.so
7f4aff568000-7f4aff767000 ---p 0001e000 08:08 5245596                    /usr/lib/python2.7/lib-dynload/_ctypes.x86_64-linux-gnu.so
7f4aff767000-7f4aff768000 r--p 0001d000 08:08 5245596                    /usr/lib/python2.7/lib-dynload/_ctypes.x86_64-linux-gnu.so
7f4aff768000-7f4aff76c000 rw-p 0001e000 08:08 5245596                    /usr/lib/python2.7/lib-dynload/_ctypes.x86_64-linux-gnu.so
7f4aff76c000-7f4aff76e000 r-xp 00000000 08:08 5245623                    /usr/lib/python2.7/lib-dynload/resource.x86_64-linux-gnu.so
7f4aff76e000-7f4aff96d000 ---p 00002000 08:08 5245623                    /usr/lib/python2.7/lib-dynload/resource.x86_64-linux-gnu.so
7f4aff96d000-7f4aff96e000 r--p 00001000 08:08 5245623                    /usr/lib/python2.7/lib-dynload/resource.x86_64-linux-gnu.so
7f4aff96e000-7f4aff96f000 rw-p 00002000 08:08 5245623                    /usr/lib/python2.7/lib-dynload/resource.x86_64-linux-gnu.so
7f4aff96f000-7f4aff9af000 rw-p 00000000 00:00 0 
7f4aff9e9000-7f4aff9ed000 r-xp 00000000 08:08 5245624                    /usr/lib/python2.7/lib-dynload/termios.x86_64-linux-gnu.so
7f4aff9ed000-7f4affbec000 ---p 00004000 08:08 5245624                    /usr/lib/python2.7/lib-dynload/termios.x86_64-linux-gnu.so
7f4affbec000-7f4affbed000 r--p 00003000 08:08 5245624                    /usr/lib/python2.7/lib-dynload/termios.x86_64-linux-gnu.so
7f4affbed000-7f4affbef000 rw-p 00004000 08:08 5245624                    /usr/lib/python2.7/lib-dynload/termios.x86_64-linux-gnu.so
7f4affbef000-7f4affd6f000 rw-p 00000000 00:00 0 
7f4affd6f000-7f4afff89000 r-xp 00000000 08:08 4718620                    /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
7f4afff89000-7f4b00188000 ---p 0021a000 08:08 4718620                    /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
7f4b00188000-7f4b001a4000 r--p 00219000 08:08 4718620                    /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
7f4b001a4000-7f4b001b0000 rw-p 00235000 08:08 4718620                    /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
7f4b001b0000-7f4b00233000 rw-p 00000000 00:00 0 
7f4b0026c000-7f4b002ac000 rw-p 00000000 00:00 0 
7f4b002ac000-7f4b002b2000 r-xp 00000000 08:08 5245601                    /usr/lib/python2.7/lib-dynload/_hashlib.x86_64-linux-gnu.so
7f4b002b2000-7f4b004b1000 ---p 00006000 08:08 5245601                    /usr/lib/python2.7/lib-dynload/_hashlib.x86_64-linux-gnu.so
7f4b004b1000-7f4b004b2000 r--p 00005000 08:08 5245601                    /usr/lib/python2.7/lib-dynload/_hashlib.x86_64-linux-gnu.so
7f4b004b2000-7f4b004b3000 rw-p 00006000 08:08 5245601                    /usr/lib/python2.7/lib-dynload/_hashlib.x86_64-linux-gnu.so
7f4b004b3000-7f4b00533000 rw-p 00000000 00:00 0 
7f4b00534000-7f4b00734000 rw-p 00000000 00:00 0 
7f4b00734000-7f4b00740000 r-xp 00000000 08:08 5245603                    /usr/lib/python2.7/lib-dynload/_json.x86_64-linux-gnu.so
7f4b00740000-7f4b0093f000 ---p 0000c000 08:08 5245603                    /usr/lib/python2.7/lib-dynload/_json.x86_64-linux-gnu.so
7f4b0093f000-7f4b00940000 r--p 0000b000 08:08 5245603                    /usr/lib/python2.7/lib-dynload/_json.x86_64-linux-gnu.so
7f4b00940000-7f4b00941000 rw-p 0000c000 08:08 5245603                    /usr/lib/python2.7/lib-dynload/_json.x86_64-linux-gnu.so
7f4b00941000-7f4b00dcc000 r--p 00000000 08:08 5111908                    /usr/lib/locale/locale-archive
7f4b00dcc000-7f4b00ed4000 r-xp 00000000 08:08 4723196                    /lib/x86_64-linux-gnu/libm-2.23.so
7f4b00ed4000-7f4b010d3000 ---p 00108000 08:08 4723196                    /lib/x86_64-linux-gnu/libm-2.23.so
7f4b010d3000-7f4b010d4000 r--p 00107000 08:08 4723196                    /lib/x86_64-linux-gnu/libm-2.23.so
7f4b010d4000-7f4b010d5000 rw-p 00108000 08:08 4723196                    /lib/x86_64-linux-gnu/libm-2.23.so
7f4b010d5000-7f4b010ee000 r-xp 00000000 08:08 4718609                    /lib/x86_64-linux-gnu/libz.so.1.2.8
7f4b010ee000-7f4b012ed000 ---p 00019000 08:08 4718609                    /lib/x86_64-linux-gnu/libz.so.1.2.8
7f4b012ed000-7f4b012ee000 r--p 00018000 08:08 4718609                    /lib/x86_64-linux-gnu/libz.so.1.2.8
7f4b012ee000-7f4b012ef000 rw-p 00019000 08:08 4718609                    /lib/x86_64-linux-gnu/libz.so.1.2.8
7f4b012ef000-7f4b012f1000 r-xp 00000000 08:08 4723133                    /lib/x86_64-linux-gnu/libutil-2.23.so
7f4b012f1000-7f4b014f0000 ---p 00002000 08:08 4723133                    /lib/x86_64-linux-gnu/libutil-2.23.so
7f4b014f0000-7f4b014f1000 r--p 00001000 08:08 4723133                    /lib/x86_64-linux-gnu/libutil-2.23.so
7f4b014f1000-7f4b014f2000 rw-p 00002000 08:08 4723133                    /lib/x86_64-linux-gnu/libutil-2.23.so
7f4b014f2000-7f4b014f5000 r-xp 00000000 08:08 4718688                    /lib/x86_64-linux-gnu/libdl-2.23.so
7f4b014f5000-7f4b016f4000 ---p 00003000 08:08 4718688                    /lib/x86_64-linux-gnu/libdl-2.23.so
7f4b016f4000-7f4b016f5000 r--p 00002000 08:08 4718688                    /lib/x86_64-linux-gnu/libdl-2.23.so
7f4b016f5000-7f4b016f6000 rw-p 00003000 08:08 4718688                    /lib/x86_64-linux-gnu/libdl-2.23.so
7f4b016f6000-7f4b018b6000 r-xp 00000000 08:08 4723208                    /lib/x86_64-linux-gnu/libc-2.23.so
7f4b018b6000-7f4b01ab6000 ---p 001c0000 08:08 4723208                    /lib/x86_64-linux-gnu/libc-2.23.so
7f4b01ab6000-7f4b01aba000 r--p 001c0000 08:08 4723208                    /lib/x86_64-linux-gnu/libc-2.23.so
7f4b01aba000-7f4b01abc000 rw-p 001c4000 08:08 4723208                    /lib/x86_64-linux-gnu/libc-2.23.so
7f4b01abc000-7f4b01ac0000 rw-p 00000000 00:00 0 
7f4b01ac0000-7f4b01ad8000 r-xp 00000000 08:08 4718682                    /lib/x86_64-linux-gnu/libpthread-2.23.so
7f4b01ad8000-7f4b01cd7000 ---p 00018000 08:08 4718682                    /lib/x86_64-linux-gnu/libpthread-2.23.so
7f4b01cd7000-7f4b01cd8000 r--p 00017000 08:08 4718682                    /lib/x86_64-linux-gnu/libpthread-2.23.so
7f4b01cd8000-7f4b01cd9000 rw-p 00018000 08:08 4718682                    /lib/x86_64-linux-gnu/libpthread-2.23.so
7f4b01cd9000-7f4b01cdd000 rw-p 00000000 00:00 0 
7f4b01cdd000-7f4b01d03000 r-xp 00000000 08:08 4718677                    /lib/x86_64-linux-gnu/ld-2.23.so
7f4b01d26000-7f4b01de6000 rw-p 00000000 00:00 0 
7f4b01e17000-7f4b01edc000 rw-p 00000000 00:00 0 
7f4b01efe000-7f4b01eff000 rw-p 00000000 00:00 0 
7f4b01eff000-7f4b01f00000 rwxp 00000000 00:00 0 
7f4b01f00000-7f4b01f02000 rw-p 00000000 00:00 0 
7f4b01f02000-7f4b01f03000 r--p 00025000 08:08 4718677                    /lib/x86_64-linux-gnu/ld-2.23.so
7f4b01f03000-7f4b01f04000 rw-p 00026000 08:08 4718677                    /lib/x86_64-linux-gnu/ld-2.23.so
7f4b01f04000-7f4b01f05000 rw-p 00000000 00:00 0 
7ffde8ea2000-7ffde8ec4000 rw-p 00000000 00:00 0                          [stack]
7ffde8ec7000-7ffde8ec9000 r--p 00000000 00:00 0                          [vvar]
7ffde8ec9000-7ffde8ecb000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
[I 15:26:45.433 NotebookApp] KernelRestarter: restarting kernel (1/5)
WARNING:root:kernel f519f0e3-9c12-47e2-becf-fbd97e79c284 restarted
[

Pip List

(python2) jack@jack:~/Documents/Deep Learning with PyTorch: A 60 Minute Blitz$ pip list
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
atari-py (0.1.1)
attrs (17.2.0)
autobahn (17.8.1)
Automat (0.6.0)
backports-abc (0.5)
backports.shutil-get-terminal-size (1.0.0)
backports.ssl-match-hostname (3.5.0.1)
bleach (2.0.0)
Box2D-kengz (2.3.3)
certifi (2017.7.27.1)
chardet (3.0.4)
configparser (3.5.0)
constantly (15.1.0)
cycler (0.10.0)
Cython (0.26)
decorator (4.1.2)
docker-py (1.10.3)
docker-pycreds (0.2.1)
entrypoints (0.2.3)
enum34 (1.1.6)
fastzbarlight (0.0.14)
functools32 (3.2.3.post2)
go-vncdriver (0.4.19)
gym (0.9.2)
h5py (2.7.0)
html5lib (0.999999999)
hyperlink (17.3.1)
idna (2.6)
imageio (2.2.0)
incremental (17.5.0)
ipaddress (1.0.18)
ipykernel (4.6.1)
ipython (5.4.1)
ipython-genutils (0.2.0)
ipywidgets (7.0.0)
Jinja2 (2.9.6)
jsonschema (2.6.0)
jupyter (1.0.0)
jupyter-client (5.1.0)
jupyter-console (5.1.0)
jupyter-core (4.3.0)
Keras (2.0.6)
leveldb (0.194)
MarkupSafe (1.0)
matplotlib (2.0.2)
mistune (0.7.4)
mujoco-py (0.5.7)
nbconvert (5.2.1)
nbformat (4.3.0)
networkx (1.11)
nose (1.3.7)
notebook (5.0.0)
numpy (1.13.1)
olefile (0.44)
opencv-contrib-python (3.3.0.9)
pachi-py (0.0.21)
pandas (0.20.3)
pandocfilters (1.4.2)
pathlib2 (2.3.0)
pexpect (4.2.1)
pickleshare (0.7.4)
Pillow (4.2.1)
pip (9.0.1)
prompt-toolkit (1.0.15)
protobuf (3.4.0)
ptyprocess (0.5.2)
pyglet (1.2.4)
Pygments (2.2.0)
PyOpenGL (3.1.0)
pyparsing (2.2.0)
python-dateutil (1.5)
python-gflags (3.1.1)
pytz (2017.2)
PyWavelets (0.5.2)
PyYAML (3.12)
pyzmq (16.0.2)
qtconsole (4.3.1)
requests (2.10.0)
scandir (1.5)
scikit-image (0.13.0)
scipy (0.19.1)
setuptools (36.2.7)
simplegeneric (0.8.1)
singledispatch (3.4.0.3)
six (1.10.0)
subprocess32 (3.2.7)
terminado (0.6)
testpath (0.3.1)
Theano (0.9.0)
torch (0.2.0.post1)
torchvision (0.1.9)
tornado (4.5.1)
traitlets (4.3.2)
Twisted (17.5.0)
txaio (2.8.1)
ujson (1.35)
universe (0.21.5, /home/jack/Applications/universe)
urllib3 (1.22)
visdom (0.1.5)
wcwidth (0.1.7)
webencodings (0.5.1)
websocket-client (0.44.0)
wheel (0.29.0)
widgetsnbextension (3.0.0)
zope.interface (4.4.2)

[takluyver]

That sounds like some kind of issue with pytorch - there might be some difference in the conditions that makes it happen, but Jupyter's not doing anything special with that code - it's just sending it to Python to run.

[jmlago]

I have the same issue, i can start running python or ipython on the term and then import torch, but i can not import pytorch in jupyter...

[takluyver]

There may be some difference in the environment variables, or pytorch might be detecting that it's running in a Jupyter kernel and doing something different.

[rolweber]

PyTorch has several open issues that mention Jupyter, including pytorch/pytorch#2339.
Please follow up there. You're more likely to find people who can help you there.

[soumith]

this can be closed. if you install the latest binaries with instructions from http://pytorch.org this issue will be fixed now.

Sorry for the trouble.

[selous123]

@soumith

i update the latest version of pytorch

Question1:it worked well in jupyter just before i update pytorch . and then it occurs "kernel died restarting" in jupyter also...... the problem description is here

Question2:before i update pytorch,import torch runs well in spyder. but now

Question3:it breaks down also in the terminal.

the problem occurs in net.forward(input)

and gdb information:

anyerror in the kernel of latest version??

[soumith]

@selous123 can you paste the code that gave a segfault in the terminal?

[selous123]

@soumith

thank you for your answering

Later,I update all the packages in anaconda

conda update --all

delightedly Question1 and Question3 have been solved

but the error in the spyder also exists

just import torch

will raise a problem

configuration of my system can be found in the stackoverflow ,including the code also

[clived2]

I have the same issue. I followed the same steps as posted by selous123 and with it crashed as per below:

I hope this gets resolved soom

Clive

[clived2]

Adding to my comments above:
Struggling away with pytorch 0.2.0. I am trying to run a Udemy deeplearning project on ubuntu 16.04 x64. Surprisingly enough the same project runs well on a Windows 10 laptop with an earlier version of pytorch on a conda python 3.5 env. So I created a conda python 3.5 env on ubuntu laptop to run things like tensorflow, pytorch, etc.
My problem is that after loading torch (import torch) at the top of my Python script, as soon as the script reaches the part where torch is enabled (torch.nn in this case) the script crashes, killing the kernel. I discovered that in a python window, i could "import torch" but when I do a torch.rand(4) as an example, i get an "illegal instruction, core dumped" so this is what is killing my script. I have a screenshot of this which I am attaching to this post. I hope this makes sense to any of the developers who are involved in the pytorch 0.2.0 project.

[soumith]

@clived2 I've followed up with you here: https://discuss.pytorch.org/t/pytorch-0-2-0-python-3-5-issue-which-seems-quite-common/7288 and let's discuss there.

[clived2]

hi there

I am actually running this on a desktop Ubuntu 16.04 x64 desktop running Python 3.6. but I did up to a day ago run my script in a PY35 env on the same computer and the results were the same. Here is the display of cat/proccpuinfo :slight_smile:
clived@UbuntuGnome2:~$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel® Pentium® Dual CPU E2140 @ 1.60GHz
stepping : 13
microcode : 0xa1
cpu MHz : 1200.000
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
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 lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm
bugs :
bogomips : 3189.63
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel® Pentium® Dual CPU E2140 @ 1.60GHz
stepping : 13
microcode : 0xa1
cpu MHz : 1200.000
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
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 lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm
bugs :
bogomips : 3189.63
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

This computer does seem to support SSE.SSE2 and SSE3 but not SSE4. Both are older machines running I686 cpus
I hope this helps and thanks for your response

Clive

[Naviden]

I had this issue almost for 1 year and since my installation/libraries/... were a real mess I suppose it's something wrong with python installation --> I kinda solve this problem by simply opening jupyter twice!
so "jupyter notebook" and again "jupyter notebook" and it was working fine.
Yesterday I totally purged Python, Anaconda and everything related to python and installed a fresh one.
To my surprise, the Problem is still there!! Even after reinstalling everything I need to open jupyter twice!

Python 3.6.2 | Windows 7 64-bit