[mesa-users] Comiling (error?)

[Richard Townsend]

Hi folks --

Just a follow-up on this, to shed some light on what may have been happening to Xavier.

It seems that on 32-bit systems, the test program mesa/mtx/test/tester can sometimes crash with a segmentation fault (indicating a memory access problem). When it does crash, it hangs indefinitely until killed rather than exiting nicely. This explains the hung installation encountered below by Xavier.

What's curious is that tester does not always crash; one run can succeed and the next fail.

I'm currently digging around to better understand the issue.

cheers,

Rich

On Jul 6, 2013, at 6:19 AM, Xavier Fernández-Real Girona wrote:

> Hi again,
> first of all, thank you very much for your response. Since I had tried successfully the installation in a 64-bit OS, I decided to reinstall my Ubuntu in this version (I should have done this a long ago).
> 
> Now it works fine.
> 
> Thanks again,
> Xavier
> 
> 
> El 06/07/2013 13:11, "Max Katz" <maxpkatz at gmail.com> escribió:
> There was a series of e-mails a month or two ago ("Error running ./mk in version 4930") where we tried to work through the issues in even the installation step on 32-bit Ubuntu, and I was not able to eliminate all of them. It did lead me to try installing MESA on my 64-bit Linux Mint, which was successful (which makes sense if it also works in 64-bit Ubuntu). If using a 64-bit OS is not an option, we can certainly re-open that investigation, but the underlying issue may not be trivial to find.
> 
> 
> On Fri, Jul 5, 2013 at 5:09 PM, Aaron Dotter <aaron.dotter at gmail.com> wrote:
> Hi Xavier,
> 
> Your best option is probably to install the 64-bit version of your OS, if at all possible.
> 
> See here: http://mesastar.org/documentation/frequently-asked-questions#running-mesa-on-a
> 
> Aaron
> 
> 
> 
> On Saturday, July 6, 2013, Xavier Fernández-Real Girona wrote:
> Hi everyone, 
> 
> I'm new here and I'm having trouble with the installation.
> 
> MESA version: 5118 (current)
> Operative System: Ubuntu 13.04 (32 bits)
> 
> And the exact thing I did (pre-requisites all installed):
> svn co -r 5118 svn://svn.code.sf.net/p/mesa/code/trunk mesa
> install mesasdk
> 
> export MESASDK_ROOT=~/mesadsk 
> source $MESADSK_ROOT/bin/mesadsk_init.sh
> export OMP_NUM_THREADS=2
> ./clean
> ./install
> 
> And the installation works until it reaches mtx folder, concretely until the following line:
> 
> gfortran -fopenmp -o ../tester test_mtx_support.o test_banded.o test_block_tri_dble.o test_block_tri_quad.o test_klu_dble.o test_klu_quad.o test_square.o test_square_quad.o test_sparse.o test_mtx.o  \
> 	-L../../make -lmtx -lconst -lmesaklu `mesasdk_lapack_link` `mesasdk_blas_link` -L../../../lib -lutils
> 
> And then, it basically stops. Any error is shown nor the installation finishes, it just stops there, and I have waited for more than 1 hour to see if it suddenly tries to continue, but nothing happens. 
> 
> Does anyone know what is happening? 
> 
> Thank you very much!
> Xavier
> 
> 
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