segmentation fault when execute als in toolkit?

[Nan Zhu]

Hi, 

I have two macbook pro, both with Mac OS X 10.9

I compiled the graphlab with ./configure --no_mpi --no_jvm to make it run in a multi-core machine 

when I execute als, in one of the laptops, it produced a segmentation fault 

What can  be the reason？

Thank you

Nan

[Danny Bickson]

One reason could be issues with tcmalloc but we can not know until you will send us additional information.

Please compile under debug/toolkits/collaborative_filtering"

> cd  debug/toolkits/collaborative_filtering

> make

> gdb als

> run <using all the command line you used>

> when the program segfaults send us the gdb trace.

Best,

Danny Bickson

Co-Founder
GraphLab Inc.

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[Nan Zhu]

Hi Danny,

Thank you for giving me suggestion.

Here is the gdb trace result:

(gdb) run –matrix ./smallnetflix/ –max_iter=5 –ncpus=1 –predictions=out_file

Starting program: /my_path/als –matrix ./smallnetflix/ –max_iter=5 –ncpus=1 –predictions=out_file

Program received signal SIGSEGV, Segmentation fault.

0x0000000100bb2254 in ?? ()

Thanks,

Nan

[Danny Bickson]

We need to full execution trace and not just the last line.

Thanks

Danny Bickson

Co-Founder
GraphLab Inc.

[Danny Bickson]

I am almost certain something is wrong with your system setup.

Can you try and compile the hello world example? http://docs.graphlab.org/using_graphlab_empty_app.html

Let us know if it runs.

Thanks

Danny Bickson

Co-Founder
GraphLab Inc.

On Fri, Nov 29, 2013 at 8:49 AM, Nan Zhu <zhunan...@gmail.com> wrote:

Hi Danny,

This is all information as below, when running: gdb als

GNU gdb (GDB) 7.6.1

Copyright (C) 2013 Free Software Foundation, Inc.

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software: you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.  Type "show copying"

and "show warranty" for details.

This GDB was configured as "x86_64-apple-darwin13.0.0".

For bug reporting instructions, please see:

<http://www.gnu.org/software/gdb/bugs/>...

Reading symbols from /my_path/graphlab/debug/toolkits/collaborative_filtering/als...done.

(gdb) run –matrix ./smallnetflix/ –max_iter=5 –ncpus=1 –predictions=out_file

Starting program: /my_path/graphlab/debug/toolkits/collaborative_filtering/als –matrix ./smallnetflix/ –max_iter=5 –ncpus=1 –predictions=out_file

Program received signal SIGSEGV, Segmentation fault.

0x0000000100bb2254 in ?? ()

(gdb) where

#0  0x0000000100bb2254 in ?? ()

Cannot access memory at address 0x7fff5f3fff50

(gdb) bt

#0  0x0000000100bb2254 in ?? ()

Cannot access memory at address 0x7fff5f3fff50

[Danny Bickson]

Please take a look here:
https://groups.google.com/forum/#!topic/graphlab-kdd/Yg3yYURHLFc

I suspect tcmalloc does not work on your machine, please try to disable it
as instructed above and let us know if it works for you.

Danny Bickson

Co-Founder
GraphLab Inc.

On Sat, Nov 30, 2013 at 5:05 AM, Nan Zhu <zhunan...@gmail.com> wrote:

no, I can't run hello world example.

I follow the instruction on the link, but when running, it gives error information as below: 

Segmentation fault: 11

Thanks,

Nan

[Danny Bickson]

Thanks for the update! I am glad it works for you.

Best,

Danny Bickson

Co-Founder
GraphLab Inc.

On Mon, Dec 2, 2013 at 7:21 AM, Nan Zhu <zhunan...@gmail.com> wrote:

Thanks Danny.

After update CMakeLists.txt, "hello world" app runs correctly.

Thanks,

Nan