During discussions, there has been thoughts on the 32 or 64 bit SLC4 
discussion.

As far as I can see the compatibility options are

1. SL3 build code on SL4 32 bit
2. SL3 build code with appropriate compatibility libraries installed on 
SL4 64 bit

 From a pure infrastructure perspective, the 2nd option is very 
interesting since it permits

- infrastructure managers to roll out a single SL4 version (i.e. 64 bits)
- application code to take advantage of 64 bit if worth while

Will there be a test done on an SL4 64 bit platform with 32 bit 
compatibility libraries ?

Tim

Markus Schulz wrote:
> Dear Michel,
> I remember your LCG-2.7 posting.
> I am currently collecting information on how to run the SL3 build 
> code  on SL(C)4 and would be very grateful if you could post an updated
> version of your HowTo.
>
>               markus
>
> On Oct 10, 2006, at 1:56 PM, Michel Jouvin wrote:
>
>> Ilja,
>>
>> Anyway, if you want to run current gLite version on SL(C)4, it is 
>> possible and it works very well, including with experiments SW. I 
>> posted a few months ago what you had to do on LCG-ROLLOUT, basically 
>> installing in addition to SL4 (in my case it was 64-bit) a few RPMs 
>> coming from SL3. Probably my post on the list was for LCG 2.7.0 but I 
>> can give you an update for gLite.
>>
>> If you are using Quattor (or plan to do it !!!), it is even simpler 
>> as gLite3 on SL4 comes out of the shelf...
>>
>> Michel
>>
>> --On mardi 10 octobre 2006 14:04 +0300 Ilja Livenson <[log in to unmask]> 
>> wrote:
>>
>>> Ok, thanks to all of you, who answered!
>>> Will be waiting then :)
>>>
>>> cheers,
>>> Ilja
>>>
>>> Jeff Templon wrote:
>>>> Hi Ilja,
>>>>
>>>> first a request, please refer to ports to RHEL4 not SLC4.  SLC4 is the
>>>> CERN specific version of Scientific Linux which is a derivative of
>>>> RedHat Enterprise.  If the "porting" efforts -- and even here I would
>>>> prefer not porting, but "making portable to", I hope that the "ported"
>>>> version also continues to build and run on RHEL 3.x -- are aimed at
>>>> RHEL then it is likely that the software runs effortlessly not only on
>>>> the derivative SLC4, but also other derivatives in use in EGEE/LCG.
>>>>
>>>> whew.  OK.  On to your question: this gets discussed every month at
>>>> the Grid Deployment Board and other places.  You can see e.g. Kors
>>>> Bos' introductory slides at
>>>>
>>>>    http://agenda.cern.ch/fullAgenda.php?ida=a057710
>>>>
>>>> see slide 8.  About the October 31st release, what I recall is that
>>>> this will be a compatibility mode release, capitalizing on some work
>>>> done by a couple of Tier-2 sites, enabling the RHEL-3-built software
>>>> to run in compatibility mode on RHEL-4-based boxes.  Someone from SA3
>>>> will probably pipe up and provide more details at some point.
>>>>
>>>> For true RHEL-4-built gLite, my understanding is that this is going to
>>>> take a while, not so much because of gLite, but because of the
>>>> underlying VDT distribution, which has never been built on RHEL-4.
>>>> There are issues with the C++ code, the C++ compiler in RHEL4 is much
>>>> stricter than that in RHEL3.
>>>>
>>>>     J "you pick, smiley or sad face on that last one" T
>>>>
>>>> Ilja Livenson wrote:
>>>>> Hello,
>>>>>
>>>>> I was wondering - when is the approximate deadline for porting glite
>>>>> to slc4? So that it would be possible to install middleware without
>>>>> too much dependency hacks?
>>>>>
>>>>> cheers,
>>>>> Ilja
>>
>>
>>
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