You are currently viewing LQ as a guest. [email protected] View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by [email protected] Thread Tools Show Printable Version Email this Page Search this Thread Advanced One can start gdb on a compute node interactively (requin only!) by submitting it to the test queue (1 hour runtime limit!) with sqrun as follows: [[email protected] bugs]$ sqrun -t -q Comment 4 Tobias Burnus 2008-01-19 20:49:48 UTC I can reproduce it on x86-64-linux. http://kelcours.com/cannot-access/gdbserver-cannot-access-memory.html
Hitting ctrl-c doesn't solve the issue as that breaks off printing the frame info before even printing the line number, which rather limits the functionality of gdb: no backtraces, no line Not fully regression tested yet, but gfortran.dg/common_* does not show any problems. Package tabu: changing row color changes spacing? Note that by default the Intel compilers default to masking exceptions and producing NaN/Inf values.
A script to submit an mpi job for gdb to run in batch mode would look like this: #!/bin/bash rm -rf .gdbinit cat > .gdbinit << EOF r bt Here's a smaller example to reproduce the issue: $ cat test.f90 subroutine bar(arg) integer, intent(inout):: arg print *, 'bar argument is', arg arg = 42 end subroutine bar program test integer:: I'll launch regtesting. Comment 4 Jan Kratochvil 2011-04-29 16:34:25 IST (In reply to comment #3) > When you say I don't see this issue with fsf gdb, do you mean it doesn't stall?
There is absolutely no warranty for GDB. It is not comprehensive and only aims to give users enough knowledge to get started on their own. The problem appeared between 'GNU Fortran (GCC) 4.3.0 20080115' (rev. 131542) and '4.3.0 20080116' (rev. 131572). Cannot Access Memory At Address Gdb Backtrace when one has successfully done a module load pathscale).
Breakpoint 2, resolve_common_vars (sym=
The sample program: program main implicit none call print_string("hello world") contains subroutine print_string(string) character(len=*):: string print *, string end subroutine print_string end program main Comment 1 Stephan Kramer 2010-09-14 19:21:32 IST Cannot Access Memory At Address C++ Best wishes, Jeff On Mon, Nov 15, 2010 at 9:33 AM, Jeff Steward
GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. This GDB was configured as "i586-suse-linux" and gcc Code: gcc (SUSE Linux) 4.3.1 20080507 (prerelease) [gcc-4_3-branch revision 135036] Copyright (C) 2008 Free Software Foundation, Inc. Gdb Cannot Access Memory At Address Breakpoint However, the debuggers are slightly different 7.6.1-42 for one and 7.6.1-46 for the other. Cannot Access Memory At Address Gdb Core There are three parts to a very simple program that is just reading in information from a file.
Maybe ask an electric fence forum? http://kelcours.com/cannot-access/gdb-core-file-cannot-access-memory.html So there is no error in your program. The code is written in fortran 90 and compiles fine with intel fortran compiler ifort. I guess "Cannot access memory at address 0x0" means that the variable is NULL, but I have already defined the "ff" array in the program. How To Debug Cannot Access Memory At Address
How do I handle this? Job was executed on host(s)
Identifying bugs and errors Typically one realizes they've encountered a problem with their program when it fails to complete (crashes) or when it doesn't produce the expected output (either corrupted/incorrect output Cannot Access Memory At Address 0x8 Or, do you not see "Cannot access memory at address
Keep in mind that this setting will not persist between logins, so you should either put it in your shell configuration file (eg. ~/.bash_profile ) or run it any time you
It includes tools that help with both debugging and profiling, including: a memory error detector, two thread error detectors, a cache and branch-prediction profiler, a call-graph generating cache profiler, and a Password Linux - Newbie This Linux forum is for members that are new to Linux. This makes gdb 7.0 and 7.1 currently unusable for our project. Gdb Core Dump Cannot Access Memory At Address debugging gdb fortran memory-address share|improve this question edited Mar 18 '15 at 20:33 francescalus 9,22341539 asked Feb 25 '14 at 19:05 falconskull 3517 What compiler are you using, I
It will probably cure nothing. In this case this output is sufficient to diagnose the problem: clearly e/d is undefined since the denominator is zero. One can also look at a stack trace, to see what has been called up till this point: (gdb) where #0 0x0000000000400f81 in divide (d=0, e=1) at /home/sndemo/bugs/bugs.f90:19 #1 0x0000000000400edd in check over here You will have to register before you can post in the forums. (Be aware the forums do not accept user names with a dash "-") Also, logging in lets you avoid
These examples are trivial, and are simply intended to show how easy it is to use the debugger. For an unfamiliar code, one can use the debugger to inspect the state of the program when it triggered the error. Comment 5 Dominique d'Humieres 2008-01-20 14:56:03 UTC I am trying to proceed backward. For more information on diagnosing the behavior of jobs see Monitoring Jobs.
If possible, one should try to resume the program from a checkpoint that is near to the crash to avoid waiting a long time while the program reaches the erroneous state. Posting in the Forums implies acceptance of the Terms and Conditions. Did you try putting the libraries at the end of the command line? However, since this isn't my overall goal with the subroutine, I would hopefully like to figure out how to fix this without the use of the global module. (I also tried
How can I track time from the command-line? Loaded symbols for /opt/sharcnet/pathscale/current/lib/2.2.1/libpscrt.so.1 Reading symbols from /lib64/tls/libc.so.6...done. Loaded symbols for /lib64/tls/libc.so.6 Reading symbols from /lib64/ld-linux-x86-64.so.2...done. current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.
Saluti R Reply With Quote 29-May-2009,07:14 #4 ken_yap View Profile View Forum Posts View Blog Entries View Articles Flux Capacitor Penguin Join Date Jun 2008 Location UTC+10 Posts 9,936 Re: argc=Cannot
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