Hi Joe,
Well, I have some bad news regarding perl. Perl is really an integral part of
how we set up problems both for the
grid generator as well as CG solver runs. Using Overture w/o perl is kind of
like editing C++ files with ed in a terminal window; you
can do it but it is not really suggested :-) Overture's graphics/interpreter
interface actually starts a perl interpreter
and the text commands are first sent to the interpreter to either get string
interpolation performed or perl statements evaluated.
You can see an example of how this is used in
$Overture/sampleGrids/squareArg.cmd, which parameterizes an ogen
grid generator command file using perl statements.
Now, it is probably possible to build Overture without the perl interpreter
linked in, you will have to change OvertureParser.C as well
as the bin/Makefile to remove references to perl. Then, however, you will need
to strip perl from any command files you plan to use.
The best way to go would be to compile Perl for BGP. However, if that is not
possible for some reason, here is another way to go:
1) Build a "full" version of Overture somewhere you can generate grids and test
things out
2) Modify this "full" version to write the "plain text" command files after the
perl processing is completed, run any command files you want through it to strip the perl
3) Build a "perl-less" version for BGP on which you can run perl-stripped cg
command files
The easiest way to "strip" command files of perl might be to intercept the
interpolated strings before they get sent to the rest of Overture
from OvertureParser, I'll have to think about the least-intrusive way to do
that.
Regards,
Kyle
PS, I will try to get to your Mac question later today.
mailto: chand1@xxxxxxxx
phoneto: (925) 422 7740
On Mar 2, 2012, at 5:58 PM, J. P. Bernstein wrote:
Hello Bill,
Thank you and Kyle for the quick replies to my emails.
Warning headed. I am on assignment from the Argonne Leadership Computing
Facility (ALCF) on this effort. There is significant interest at ALCF to
at least run the CG solvers on BGP (not necessarily ogen). Nevertheless,
I will share your sentiment with my assigners.
A question about the perl situation: my initial assessment suggested to
me that perl was needed only for configuring the build and running the
tests. Since perl is available on the front end, the configuration part
should work. Part of my assignment is converting the perl test scripts
to, e.g., python. However, your message below makes me doubt my
assessment. Are the perl libs, which, as you know, are not available on
the back end, needed at run time beyond the test scripts?
Best,
Joe
On 3/2/2012 6:08 PM, Bill Henshaw wrote:
Hi Joe,
At one time I did get Overture compiled on the BGP front end at ANL
with xlc but I was left
with the issue that the perl libraries were not available with BGP. We
could work around
this if necessary but I prefer not too if possible.
That said, experience tells me that since we have not run Overture on
BGP then you
are likely to have problems that will be very hard for you to fix.
Therefore this is just a warning
that the path you are on may lead to great misery and despair ...
...Bill
J. P. Bernstein wrote:
Hello,
I am trying to build Overture.v24 on Blue Gene P (BG/P).
In an attempt to add a BG/P configuration for A++, I looked for the
following config file mentioned in the A++ README file:
A++/config/config.options
but was not able to find the file or the directory mentioned in the
A++ directory tree.
I was able to build A++ without errors with the following configure
command:
./configure --with-CC=mpixlc_r --with-CFLAGS="-qarch=450d -qtune=450"
--with-CXX=mpixlcxx_r --with-CXXFLAGS="-qarch=450d -qtune=450"
--prefix=`pwd`
However, the flags did not seem to be passed:
mpixlc_r -DHAVE_CONFIG_H -I. -I. -I../.. -I../../include -c
`test -f common_func.c || echo './'`common_func.c
mpixlcxx_r -o resize resize.o
-L/home/jpbernst/Code/Overture/A++P++-0.8.0/A++/install/lib -L../src
-lApp -lApp_static -lApp -lm
Is this a known issue?
Returning to the BG/P config issue, I tried to hack :
config/A++P++_common_autoconfig.m4
config.sub
in order to add a Bg/P setup without success. Is there documentation
available for adding a machine config? I was not able to find any on
the Overture webpage.
Best,
Joe Bernstein
