Re: run blcr on simics virtutech

From: Andrea Autiero S143785 (andrea.autiero_at_studenti.polito.it)
Date: Thu Feb 12 2009 - 00:53:25 PST

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    now it works!!!
    thank you so much!!
    have a good day!!
    Andrea
    
    On Tue, 10 Feb 2009 11:04:32 -0800, "Paul H. Hargrove" <PHHargrove_at_lbl_dot_gov>
    wrote:
    > Try adding "-ldl" to the end of the gcc command line to link libdl.  If 
    > you then get undefined references to pthread symbols, add "-lpthread" as 
    > well.
    > 
    > -Paul
    > 
    > Andrea Autiero S143785 wrote:
    >> i've tryed it again but this is the answer:
    >>
    >> andrea@chisone:~/Desktop/materiale_tesi> gcc -o new_static matrix.c
    >> -static
    >> -L/usr/local/lib/ -lcr_run -u cr_run_link_me
    >> /usr/local/lib//libcr_run.a(libcr_run_la-cr_run.o): In function
    >> `cri_init':
    >>
    /home/andrea/Desktop/blcr-0.7.3/builddir/libcr/../../libcr/cr_libinit.c:148:
    >> undefined reference to `dlopen'
    >>
    /home/andrea/Desktop/blcr-0.7.3/builddir/libcr/../../libcr/cr_libinit.c:151:
    >> undefined reference to `dlsym'
    >>
    /home/andrea/Desktop/blcr-0.7.3/builddir/libcr/../../libcr/cr_libinit.c:152:
    >> undefined reference to `dlclose'
    >> collect2: ld returned 1 exit status
    >>
    >> is a problem of my system??i'm not very skilled on linux..
    >>
    >> thank you
    >> Andrea
    >>
    >> On Mon, 09 Feb 2009 14:23:34 -0800, "Paul H. Hargrove"
    >> <PHHargrove_at_lbl_dot_gov>
    >> wrote:
    >>   
    >>> Andrea,
    >>>
    >>>   Please reread the "Cautionary Linker Notes" in the BLCR User's Guide.
    
    >>>
    >>> I beleive you need a "-u cr_link_me" argument when building your 
    >>> application "static_2" with libcr.a.  Note also that "-u cr_run_link_me
    
    >>> -lcr_run" may be better than "-u cr_link_me -lcr" because libcr_run.a 
    >>> contains only the code that the cr_run utility would insert into a 
    >>> dynamically linked executable, while libcr.a contains additional code 
    >>> that is unnecessary for this basic usage.
    >>>
    >>>   Continue to let us know if you need assistance.
    >>>
    >>> -Paul
    >>>
    >>> Andrea Autiero S143785 wrote:
    >>>     
    >>>> all right..
    >>>> i've compiled blcr with the following options:
    >>>>
    >>>> sudo ../configure --host=ppc-linux --prefix=/ppc_blcr/builddir/
    >>>>
    >>>>       
    >>
    --with-system-map=/home/andrea/Desktop/programmi_per_tesi/linux-2.6.18/System.map
    >>   
    >>>> --with-linux=/home/andrea/Desktop/programmi_per_tesi/linux-2.6.18/
    >>>> --enable-all-static --enable-static cross_signum=64
    >>>> cross_stack_direction=-1
    >>>>
    >>>> make
    >>>>
    >>>> make install DESTDIR=/ppc_blcr/builddir
    >>>>
    >>>> then i've compiled my application:
    >>>>
    >>>> source /home/andrea/Desktop/programmi_per_tesi/eldk/eldk_init 4xx
    >>>> ${CROSS_COMPILE}gcc -o static_2 matrix.c -static
    >>>> -L/ppc/blcr_builddir/lib/
    >>>> -lcr
    >>>>
    >>>> after that i've put file in ppc_blcr/builddir and my application in
    the
    >>>> filesystem of my virtual ppc on simics
    >>>>
    >>>> it start and i initalize the library (trying launch cr_checkpoint
    >>>> --help
    >>>> works!!)
    >>>> then i launch
    >>>>
    >>>> ./static_2 &
    >>>> ps
    >>>> cr_checkpoint pid_of_static_2
    >>>>
    >>>> and i see on the screen:
    >>>>
    >>>> blcr: retry request on -CR_ENOSUPPORT
    >>>> Checkpoint failed: support missing from application
    >>>>
    >>>> now what can i do??is it possible to make it work??
    >>>> thank you
    >>>> andrea autiero
    >>>>
    >>>> On Thu, 29 Jan 2009 10:57:56 -0800, "Paul H. Hargrove"
    >>>> <PHHargrove_at_lbl_dot_gov>
    >>>> wrote:
    >>>>   
    >>>>       
    >>>>> Andrea,
    >>>>>
    >>>>>   As Karthik says, you will at least need to configure BLCR 
    >>>>> --enable-static to ensure static libraries are built (by default only
    
    >>>>> shared libs are built).  However, that alone is not sufficient
    because
    >>>>>
    >>>>> the "cr_run" utility only operates on dynamically linked executables.
    
    >>>>>
    >>>>> So, if "my_app" was compiled -static, "cr_run my_app" will not load
    >>>>> the
    >>>>>         
    >>
    >>   
    >>>>> BLCR support into the application regardless of whether the static 
    >>>>> libraries have been built.  For the case of a statically linked 
    >>>>> executable, one needs to link in BLCR support when the application is
    
    >>>>> built, rather than at run time via "cr_run".  Please see section "4.2
    
    >>>>> Making an application checkpointable" in the BLCR Users Guide (in the
    
    >>>>> doc/html directory of the BLCR distribution, or online at 
    >>>>> http://mantis.lbl.gov/blcr/doc/html/BLCR_Users_Guide.html ).  You 
    >>>>> probably want option #2 in that section, and should read the
    >>>>>         
    >> "Cautionary
    >>   
    >>>>> linker notes" at the end of that section.  If you still have
    problems,
    >>>>>
    >>>>> please let us know and we'll try to help.
    >>>>>
    >>>>> -Paul
    >>>>>
    >>>>> Karthik Gopalakrishnan wrote:
    >>>>>     
    >>>>>         
    >>>>>> Did you configure BLCR with "--enable-static"?
    >>>>>>
    >>>>>> On Thu, Jan 29, 2009 at 5:40 AM, Andrea Autiero S143785
    >>>>>> <[email protected]> wrote:
    >>>>>>   
    >>>>>>       
    >>>>>>           
    >>>>>>> goodmorning
    >>>>>>> i'm an italian student trying to run your library in one embedded
    >>>>>>>         
    >>>>>>>             
    >>>> system
    >>>>   
    >>>>       
    >>>>>>> (by now is just virtual)
    >>>>>>> i'm simuling one ebony board (ppc-4xx) whith 2.6.18 linux kernel on
    >>>>>>>             
    >> it
    >>   
    >>>>>>> i've cross-compiled the library and it seems to work on the target
    >>>>>>> system,
    >>>>>>> but i cant launch any application
    >>>>>>> linked with the lib
    >>>>>>> i must compile the executable with gcc -static and i think i need
    >>>>>>> libcr.a
    >>>>>>> how i could have it??could you help me?
    >>>>>>> running cr_run myapp & and then cr_checpoint doesn't work
    >>>>>>> it says to me "missing support from application"
    >>>>>>> hope to have one answer and thnak you
    >>>>>>> Andrea Autiero
    >>>>>>> Politecnico di Torino
    >>>>>>>
    >>>>>>>
    >>>>>>>
    >>>>>>>
    

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