[mvapich-discuss] is it bug when a large connection, large cluster, is used on mvapich 0.9.9-2007-04-25 daily verion?

[Jim Phillips]

There was an issue with LD_LIBRARY_PATH being too long for a fixed buffer 
discovered at TACC.  I don't know if it's been fixed in a release though.

-Jim


On Thu, 26 Apr 2007, Sayantan Sur wrote:

> Hi,
>
> ??? wrote:
>> Hello
>> When I ran HPL on my cluster sysem which is consist of linux blade system , 
>> it die with a strange error.
>> Under using 640 process then it works well but HPL die above 640 .
>> The error is blow.
>> bash : line 1 : 18891 Segmentation fault /usr/bin/env LD_LIBRARY_PATH=... 
>> ... ...VIA_... ... ... ./xhpl
>> -------------------------- --------- -----
>> LD_LIBRARY_PATH environment value IB environment program
>> 
>> Because i don't know about this error why it occurs so i want to help
>> 
>> and I used IB driver is ofed 1.2 rc 2 and MVAPICH 0.9.9 2007- 04-25 
>> version.
>> 
>> Have Any idea about this problem?? t
>
> Thanks for trying out MVAPICH-0.9.9. Sorry that you faced a segmentation 
> fault above 640 processes. To better diagnose the error and its causes, could 
> you please send us the back-trace of the segmentation fault? You could do 
> that by compiling both MVAPICH and HPL with "-g" in the CFLAGS (for MVAPICH 
> it should be placed in make.mvapich.gen2). Then enable core dumps (ulimit -c 
> unlimited) in your shell. Start gdb on the core file and say "bt". That 
> should give us some more information about where the application is 
> segfaulting.
>
> Thanks,
> Sayantan.
>
>> 
>> Thanks.
>> 
>> -jk
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>> 
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>
>
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