Not dead, just on hold. Stay tuned.

On Mon, May 12, 2008 at 11:25 PM, Jennifer Pioch
<piochjennifer at googlemail.com> wrote:
>
> On 5/2/08, Dennis Clarke <blastwave at gmail.com> wrote:
>  > On Fri, May 2, 2008 at 12:30 PM,  <ewood at izoom.net> wrote:
>  >  > Would it not be a whole lot better to simply start making it work on G4
>  >  >  and G5 Macs right now? Then there'd at least be a working OS to port to
>  >  >  something like POWER6 later on.
>  >
>  >  The *whole* idea from the very beginning has been to get some sort of
>  >  port up and running to a point where we have a serial console and a
>  >  shell and some tools. That would be enough to allow community people
>  >  to keep on working.
>  >
>  >  This process has been in a terrible state for years.  Years my friend.
>  >
>  >  We started with a community project with little or resources at 
> Blastwave.org
>  >
>  >  That then drew the attention of some people who brought in some heavy
>  >  hitting talent and $money$ into the project all working on a platform
>  >  that no one would ever be able to get again. The Open Desktop
>  >  Workstation from Genesi based on the PegasosPPC motherboard
>  >  http://www.pegasosppc.com/pegasos.php
>  >
>  >  I have one of those little PPC processor daughterboards here now. The
>  >  motherboard stopped working a while ago and there will never be a
>  >  replacement because you can not get one unless you make it yourself.
>  >  So we have had the big time blow out of money and with the help of a
>  >  rock star consultant named Guy Shaw we have a pile of code that will
>  >  boot up to a point and then .. well there we are. Stuck with code that
>  >  is extremely locked to a platform  which had great firmware and no one
>  >  can ever get.  The EFIKA is not the same thing but it has nice
>  >  firmware also. Just FYI.
>  >
>  >  To go forwards, again, we would need hardware that can be found
>  >  anywhere. Better yet, we would need hardware with a future. I am
>  >  thinking POWER6 gear from IBM of course. We do not want to go there
>  >  because we would need IBM engineers and millions of dollars in R&D
>  >  money to do the job. The rumour is that it took rocket science or
>  >  something more tricky, actual computer science, to get Linux working
>  >  halfway decent on the POWER6 gear because of serious time
>  >  synchronization issues in the kernel for multiple threads of execution
>  >  all running after the same blocks of memory. Please go look into the
>  >  TSO ( total store order memory consistency issues ) with references
>  >  like "Memory Consistency and Process Coordination for SPARC
>  >  Multiprocessors" :
>  >
>  >  Memory Consistency and Process Coordination for SPARC Multiprocessors
>  >  Book Series     Lecture Notes in Computer Science
>  >  Publisher       Springer Berlin / Heidelberg
>  >  ISSN    0302-9743 (Print) 1611-3349 (Online)
>  >
>  >  Also go looking for a paper by Arvind ( a one name guy? ) MIT CSAIL
>  >  and Jan-Willem Maessen ( Sun Labs ) about Memory Model and Instruction
>  >  Reordering + Store Atomicity and then more recent stuff at OpenSPARC
>  >  such as :
>  >
>  >  TSOtool: A Program for Verifying Memory Systems Using the Memory
>  >  Consistency Model
>  >   Written by Sudheendra Hangal, Durgam Vahia, Chaiyasit Manovit,
>  >  Juin-Yeu Joseph Lu and Sridhar Narayanan
>  >  IEEE Int. Symp. on Computer Architecture (ISCA04), 2004.
>  >
>  >  Really, a machine with a very well understood cache process and
>  >  detailed hardware docs is needed.
>  >  Good luck with that from the Apple stuff.
>  >
>  >  So the IBM stuff looks better but you need IBM to play along.
>  >
>  >  Or we get some money together and build some ODW units ourselves.
>  >
>  >  Either way, my friend, can you spare a million dollars ?
>
>  It sounds very much that the powerpc port is dead, is it?
>
>  Jenny
>  --
>  Jennifer Pioch, Uni Frankfurt
>
>
> _______________________________________________
>  powerpc-discuss mailing list
>  powerpc-discuss at opensolaris.org
>



-- 
PGP Public Key 0x437AF1A1
Available on hkp://pgp.mit.edu

Reply via email to