Solaris Coming to IBM's Power Architecture?
johnm writes "Jonathan Schwartz, Sun's pony-tailed number two, dropped this little snippit in his blog where he talks extensively about what he thinks 'open' means: 'For example, as we continue porting Solaris onto IBM's Power architecture (demo coming soon!)...' Does this mean you'll soon be able to ditch OS X and stick on Solaris 10 onto Macs?" While coming off as an ad for Java, Schwartz also raises some valid points about Unix and migration.
For those of you that didnt RTFA here is the best part. Jonathan writes that the definition of open: Only a customer can define the word open.
This is not the first time Solaris was ported to PPC. Back when Apple, M$, IBM, Novell, Sun, NeXT, and MOT were all more friendly, Sun had ported Solaris to PPC and the ABI was then became the SYSV 32bit PPC ABI.
Even M$ had WinNT ported to PPC and IBM even had OS/2 ported too but those were the days.
No one in their right mind is going to ditch OS X on a desktop machine for Solaris. No one. It might have a chance as a server OS but given that you can already run Linux on the Power architecture, there's no compelling reason to consider Solaris unless you're already a Solaris shop and want to buy Power machines.
That said, I assume they're porting to POWER IV and V, which are user-instruction compatible with PowerPC, though the supervisor instructions differ significantly. Thus, a POWER series port would be a good start towards making it work on random PowerMac hardware, but initially, such a port would only work on the G5 (and even then, wouldn't support altivec and would probably require additional code to recognize the CPU version...). Additional code in various assembly files (start.s stuff and various VM system changes) would be needed to make such an OS work on older PowerPC CPUs.
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Yup. PowerPC was derived from the POWER architecture; this page: http://www-106.ibm.com/developerworks/library/l-po whist/ gives all the details. (My favorite: the PowerPC can run in either big-endian or little-endian mode - although every use I've heard of runs it in big-endian mode.)
The Mac hardware thing is mostly a red herring, I'm guessing.
Here's my guess: Sun is considering the idea of dumping SPARC in favor of POWER. As things stand, they're way back in the raw performance game. Why continue investing R&D money into their own line of chips, if this is what it buys them?
Note that I'm not suggesting that they would become a pure software company -- my guess would be that they still design and build their own systems, just not their own chips.