[Insight-developers] vxl update

[Matthew McCormick (thewtex)]

Cool.  Thanks.

On Wed, Dec 8, 2010 at 12:02 PM, Hans Johnson <hans-johnson at uiowa.edu> wrote:
> Here are the flags that we use for performance:
>
>
> set ( CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O3 -msse -mmmx -msse2 -m64 -Wall -W
> -Wshadow -Wcast-qual -Wwrite-strings" CACHE STRING "" )
>
>
> CC=gcc4 CXX=g++4 ccmake ../ITK
>
> Hans
>
> --
> Hans J. Johnson, Ph.D.
> Hans-johnson at uiowa.edu
>
> 278 GH
> The University of Iowa
> Iowa City, IA 52241
> (319) 353 8587
>
>
>> From: "Matthew McCormick (thewtex)" <matt at mmmccormick.com>
>> Reply-To: "Matthew McCormick (thewtex)" <matt at mmmccormick.com>
>> Date: Wed, 8 Dec 2010 11:50:32 -0600
>> To: Hans Johnson <hans-johnson at uiowa.edu>
>> Cc: Bill Lorensen <bill.lorensen at gmail.com>, ITK <insight-developers at itk.org>
>> Subject: Re: [Insight-developers] vxl update
>>
>> Hi Hans,
>>
>> Here is what I get,
>>
>> mmmccormick at mpded ~$ gcc --version
>> gcc (GCC) 3.4.6 20060404 (Red Hat 3.4.6-8)
>>
>> mmmccormick at mpded ~$ gcc4 --version
>> gcc4 (GCC) 4.1.0 20060515 (Red Hat 4.1.0-18)
>>
>> I will try to see if I can use gcc4 over the next week, and we will
>> see how it goes.
>>
>> Thanks,
>> Matt
>>
>>
>> On Wed, Dec 8, 2010 at 10:37 AM, Hans Johnson <hans-johnson at uiowa.edu> wrote:
>>> Matthew,
>>>
>>> It is the default, but is gcc4 already installed?  I'm almost certain that
>>> RedHat EL4 defaults to gcc3, but gcc4 is usually installed, or is easy to
>>> install.
>>>
>>> Perhaps you are going to prove my hypothesis incorrect.
>>>
>>> PS:  I've found significant performance improvements when using gcc4.  If
>>> performance is an issue, I'd recommend you use gcc4 in release mode.  There
>>> are some compiler options that really help with performance that are only
>>> available in gcc4.
>>>
>>>
>>> Hans
>>> --
>>> Hans J. Johnson, Ph.D.
>>> Hans-johnson at uiowa.edu
>>>
>>> 278 GH
>>> The University of Iowa
>>> Iowa City, IA 52241
>>> (319) 353 8587
>>>
>>>
>>>> From: "Matthew McCormick (thewtex)" <matt at mmmccormick.com>
>>>> Reply-To: "Matthew McCormick (thewtex)" <matt at mmmccormick.com>
>>>> Date: Wed, 8 Dec 2010 09:38:48 -0600
>>>> To: Bill Lorensen <bill.lorensen at gmail.com>
>>>> Cc: Hans Johnson <hans-johnson at uiowa.edu>, ITK <insight-developers at itk.org>
>>>> Subject: Re: [Insight-developers] vxl update
>>>>
>>>> On Wed, Dec 8, 2010 at 9:08 AM, Bill Lorensen <bill.lorensen at gmail.com>
>>>> wrote:
>>>>> I don't think we should drop gcc 3.x. For example, my mingw gcc
>>>>> compiler is 3.4.5 and builds ITK just fine. It is a recent download of
>>>>> mingw.
>>>>>
>>>>> I'm sure there are a lot of folks out there still using gcc 3.x
>>>>>
>>>>
>>>> It is default for the Condor cluster I use.
>>>
>>>
>
>