[petsc-users] Debugging suggestions: GAMG

Sanjay Govindjee s_g at berkeley.edu
Sun Jun 14 02:29:55 CDT 2020


That worked.  Thanks.

On 6/14/20 12:19 AM, Barry Smith wrote:
>
>    You should be able to use the option
>
>  -fp_trap on
>
> to resolve this problem. I am working on a general fix but it is 
> extensive and has to go into the master branch and cannot be back ported.
>
>   Barry
>
>
>> On Jun 13, 2020, at 3:06 PM, Sanjay Govindjee <s_g at berkeley.edu 
>> <mailto:s_g at berkeley.edu>> wrote:
>>
>> Not a lot of luck here; I guess I don't know how to set the break 
>> point correctly?
>>
>>     (gdb) b ieee_handler
>>     Function "ieee_handler" not defined.
>>     Make breakpoint pending on future shared library load? (y or [n]) y
>>     Breakpoint 1 (ieee_handler) pending.
>>     (gdb) c
>>     Continuing.
>>
>>     Thread 1 "feap" received signal SIGFPE, Arithmetic exception.
>>     0x00007f8d1a422be1 in ieeeck_ () from /lib64/liblapack.so.3
>>
>>
>> On 6/13/20 9:04 AM, Barry Smith wrote:
>>> You could try in gdb to put a break point in ieee_handler and find 
>>> all the places it gets called, maybe this will lead to the location 
>>> of the cause.
>>
>

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