I have some researchers who want to run OpenMP for multiprocessor
machines, but minimum requirement for OpenMP is gcc 4.2.2.

Andrea


**************************************************
Andrea Laack
IS Manager
Functional Imaging Research Center
Medical College of Wisconsin
8701 Watertown Plank Road
Milwaukee, WI 53226
414-456-4661


Steve Thompson wrote:
> On Thu, 17 Dec 2009, Andrea Laack wrote:
>
>> Why is redhat version 5.3 running gcc version 4.3 and centos 5.4 running
>> gcc version 4.1.2? When will gcc be upgraded on centos?
>
> All of my 5.3 systems run 4.1.2 as well, per yum.
>
> -s
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Andrea Laack wrote:
> Why is redhat version 5.3 running gcc version 4.3 and centos 5.4 running
> gcc version 4.1.2? When will gcc be upgraded on centos?

Looks like two different versions of gcc are available

CentOS:
http://mirrors.kernel.org/centos/5/os/SRPMS/gcc-4.1.2-46.el5.src.rpm
http://mirrors.kernel.org/centos/5/os/SRPMS/gcc44-4.4.0-6.el5.src.rpm

And a 3rd version for RHEL
RHEL:
http://mirrors.kernel.org/redhat/redhat/linux/enterprise/5Server/en/os/SRPMS/gcc-4.1.2-46.el5_4.1.src.rpm
http://mirrors.kernel.org/redhat/redhat/linux/enterprise/5Server/en/os/SRPMS/gcc43-4.3.2-7.el5.src.rpm
http://mirrors.kernel.org/redhat/redhat/linux/enterprise/5Server/en/os/SRPMS/gcc44-4.4.0-6.el5.src.rpm

So perhaps just the gcc43 package is missing from CentOS, but you
can go to 4.4 if you want a newer version.

nate


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On Dec 17, 2009, at 1:07 PM, nate wrote:

> Andrea Laack wrote:
>> Why is redhat version 5.3 running gcc version 4.3 and centos 5.4
>> running
>> gcc version 4.1.2? When will gcc be upgraded on centos?
>
> Looks like two different versions of gcc are available
>
> CentOS:
> http://mirrors.kernel.org/centos/5/os/SRPMS/gcc-4.1.2-46.el5.src.rpm
> http://mirrors.kernel.org/centos/5/os/SRPMS/gcc44-4.4.0-6.el5.src.rpm
>
> And a 3rd version for RHEL
> RHEL:
> http://mirrors.kernel.org/redhat/redhat/linux/enterprise/5Server/en/os/SRPMS/gcc-4.1.2-46.el5_4.1.src.rpm
> http://mirrors.kernel.org/redhat/redhat/linux/enterprise/5Server/en/os/SRPMS/gcc43-4.3.2-7.el5.src.rpm
> http://mirrors.kernel.org/redhat/redhat/linux/enterprise/5Server/en/os/SRPMS/gcc44-4.4.0-6.el5.src.rpm
>
> So perhaps just the gcc43 package is missing from CentOS, but you
> can go to 4.4 if you want a newer version.
>

In any case, the gcc 4.1.2 on CentOS 5 supports openmp (use -
fopenmp). It might require the libgomp package.

Tony Schreiner
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gcc 4.3 was a technology preview in 5.3. It became 4.4 in 5.4.
4.1.2 is the supported version in 5.x.

Laurent.
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