[gradsusr] GrAds 2.0a7 and beyond - floating point exception

[Jennifer Adams]

Hi, Ron --
The 'floating point exception' usually means the architecture of the  
executable is incompatible with the OS. Our binary releases are not  
100% statically linked, there are some shared dependencies. From your  
message, it's not clear which binary release you're using -- CentOS  
(previously known as RHEL) 4 or 5 (the two 64-bit builds) or i686 (the  
32-bit build). Try using the 'ldd' command print out shared library  
dependencies and see if those libs exist on your system, and you can  
compare the ldd ouptut from 2.0.a5 and later builds. For example, the  
latest CentOS5 build has this:

 > ldd /usr/local/grads/2.0/2.0.a9.release/grads
         libX11.so.6 => /usr/lib64/libX11.so.6 (0x0000003edf000000)
         libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003ede800000)
         libdl.so.2 => /lib64/libdl.so.2 (0x0000003ede400000)
         librt.so.1 => /lib64/librt.so.1 (0x0000003ee2400000)
         libm.so.6 => /lib64/libm.so.6 (0x0000003ede000000)
         libstdc++.so.6 => /usr/lib64/libstdc++.so.6  
(0x0000003ee4000000)
         libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x0000003ee2c00000)
         libc.so.6 => /lib64/libc.so.6 (0x0000003eddc00000)
         libXau.so.6 => /usr/lib64/libXau.so.6 (0x0000003edf400000)
         libXdmcp.so.6 => /usr/lib64/libXdmcp.so.6 (0x0000003edf800000)
         /lib64/ld-linux-x86-64.so.2 (0x0000003edd800000)


If your unix flavor is not quite the same as the OS on which the  
binary was originally compiled/linked, then you may have to rebuild  
from source. It's hard to say what what may have changed between a5  
and a6 -- maybe our OS was upgraded during that time.

Here's the current uname -a output from our CentOS 4 and 5 boxes:

# uname -a
Linux <host> 2.6.9-89.0.16.ELsmp #1 SMP Tue Nov 3 17:43:09 EST 2009  
x86_64 x86_64 x86_64 GNU/Linux
  # uname -a
Linux <host> 2.6.18-194.17.1.el5 #1 SMP Wed Sep 29 12:50:31 EDT 2010  
x86_64 x86_64 x86_64 GNU/Linux

--Jennifer


On Feb 16, 2011, at 1:31 PM, Goodson,Ron [Edm] wrote:

> Hi to the brain trust (Jennifer et al.).  Because my problem is so  
> vague - I'm not necessarily expecting an answer but thought I'd give  
> it a shot.
>
> Using either an older RedHat WS4 installation running kernel  
> 2.6.9-11, or a newer Debian etch (2.6.18-6) I have been able to use  
> all version of grads up to and including 2.0.a5.  However, all  
> versions beyond that result in a "floating point exception"  
> immediately after invoking grads.
>
> I am thinking there is some underlying library mis-match.  Just  
> wondering if anyone could throw me a bone as to what might have  
> changed between a5 and a7 (in terms of what they expect from the  
> operating-system libraries) so that I can have a starting point to  
> fixing this.
>
> Thanks for any help - but - since I haven't seen any one else  
> mention this, I'm not expecting much.
>
> ron goodson
> environment canda
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr

--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20110216/6b8f5c14/attachment-0003.html