hi Ted,
I'm using Doug Rohdes svdlibc and found that some compilation options for
very larger
files on a 64 bit system can remove the typical 32 limitations regarding the
amount of data that can be processed.
The compilation options for gcc are:
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
I have not tested this, but using icc (if available) might result in a
faster running program.
Maybe someone more technically inclined can back these statements...
S.
On Wed, Apr 2, 2008 at 5:27 PM, Ted Pedersen <[EMAIL PROTECTED]> wrote:
> Greetings all,
>
> As you know in the past we have made rather stern warnings about what
> version of gcc
> you should use for compiling SVDPACKC. However, I found myself working
> these days
> with version 4.1.1 of gcc, and having absolutely no problems with
> SVDPACKC (the problem
> in the past has been rather inexplicable segementation faults when
> running las2).
>
> So....I might temper our version requirements a bit in light of my
> experience of late - in the
> past we have suggested using a 3.2 or 3.3 version of gcc, but I'm not
> sure if that's either
> realistic or necessary at this point.
>
> If you've had any experiences with SVDPACKC good or bad that might
> shed some light
> on this, I'd be happy to hear about them. I am actually not a high
> powered user of gcc, so
> I'm wondering if there might not be some option settings I don't know
> about that might
> help resolve some of this inconsistency as we move from version to
> version of gcc.
>
> Right now we just compile like this...
>
> gcc -ansi -O -c las2.c
>
> Also, I found that I was having a hard time compiling SVDLIBC on a
> Xeon processor - so
> my efforts on that front are momentarily stalled, but will surely
> continue.
>
> So, I'll be updating CPAN with a new development release of
> SenseClusters sometime in
> the next few days that will hopefully resolve some issues with
> svdpackout.pl and might
> have better guidelines about compiling SVDPACKC. Thereafter we'll move
> on to considering
> the issue of SVDPACKC versus SVDLIBC.
>
> Cordially,
> Ted
>
> --
> Ted Pedersen
> http://www.d.umn.edu/~tpederse <http://www.d.umn.edu/%7Etpederse>
>
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