Will PPC Become the Preferred Linux Platform?

grunkhead writes "Stephan Somogyi, aka the Darwinist, at MacWeek has an interesting take on Linux on the PowerPC in the wake of IBM's release of a free motherboard design for the G3/750, suggesting the PPC could be the preferred Linux platform of the future. "

How important is platform architechture

This begs the question: How much do you care what kind of processor you are running? The answer has to do with whether Linux does an adequate job of hiding platform differences so that porting a piece of software to a different machine is just a matter of a recompile. If it is easy to build an application on any machine, and most applications are distributed in source form, most people will probably not care what kind of machine they run on and PPC machines will be much more popular. On the other hand, if most applications are only available as binaries, and it takes a great deal of effort to port the code and QA it, then alterantive machines don't have much of a chance.

Compiler Influances

The popularity of any CPU for use in Linux will probably be largly determined by how well the company pushing that processor supports the gcc project.

Intel's own compiler for the Pentiums is very good, but GCC is also great for x86, so it's popular. The commercial DEC (rr... Compaq) compiler really rocks on Alphas, but gcc isn't nearly as good for Alphas as the commercial compilers. So, Linux/Alpha isn't nearly as popular as you would expect it to be (give shear preformance factors of the CPU are masked by the results of the compilers).

I have no doubt in my mind Linux will run on almost any platform, the Linux community is very very active in getting the OS ported to new hardware.

I have doubts that PPC will become popular. If Motorola or IBM puts some money, work, and support into GCC, then the G3's will really rock in Linux. If they don't, it'll just be "another" platform that Linux runs on, but nobody really uses (much like Alpha is now). Before you consider this a flame, check benchmarks of Comercial C and Fortran compilers for Alphas and benchmarks for gcc on Alpha. And, then notice that there are a lot of people who would consider Linux, but end up buying a commercial OS and compiler for thier Alpha insted.

Eh?

Frankly I don't see why a cheap PPC motherboard is going to make a huge diffrence. PC motherboards are quite cheep, under $100 for a Super7 motherboard. So if the PPC is going to compete in price it has a long road to hoe. A free design doesn't mean free motherboards, in fact the free design might not be as cheep to make as some of the more mature PC motherboards!

The fact that Linux is more or less processer agnostic just makes it worse, after all why go for a PPC rather then an alpha just because there are vague roumors that the Alpha will gasp it's last any year now? I mean if switching to a new CPU is so easy, why not use the Alpha until it actually gasps it's last? (assuming of corse that the Alpha is faster -- with the SPECmarks seem to say, and cheap enough)

The only real argument I could see for using the PPC is if it (the PPC) actually made it into nice cheep machines, like maybe the portables (they seem relitavly inexpensave for what you get -- but I havn't looked at PC portable prices, so i may be in for a shock). Actually that isn't the only argument. It would be intresting to see Linux on one of the big PowerAS machines...nicer still to see it hosted under VM on a 390 (but that's not a PowerPC).

USB support

Just a note for LinuxPPC users: the G3 Mac doesn't load properly unless you remove USB support from the machine before install. This caused us some problems before one of our managers figured this out :)

This having been said, my only problem with the PPC architechture is that so many darn PPC machines still use one-button mouses...

Apple Powerbook G3's

I just "aquired" a new Apple 333Mhz G3 512K l2 cache, with a 14" active matrix screen, 64MB RAM, and 4G HD. It comes with an IrDA port, 10/100 ethernet BUILT IN (not via a fragile card clip-thing or cable), 2 usb ports, a built in modem (which I believe is a REAL v.90 modem, and not a software modem, but I might be wrong.) a CDROM drive that can be replaced with a DVD drive without any other special upgrades, and ATI video chip with 8MB SDRAM, VGA-out, S-video output, sound in/out jacks, builtin mic and speakers,a cardbus slot, and a SCSI connector.

This cost 2300$ retail and for the hardware it appears to be an absolutely great deal. I have a few other new PC laptops here from compaq and toshiba. In the same price range they don't have built-in ethernet, they don't have SCSI, and they don't have as much video RAM. They are also Celeron or AMD K6-x chips, not P2-3's. In my subjective opinion the G3 laptop is cooler looking as well.

So.. before you go and bash apple powerbooks, check out the specs, pricing, and use one for a week. All my other computers here are PCs but you have to give credit where credit is due. Apple's G3 powerbooks are real contenders, even leaving out the OS.

PS: Compaq prices their consumer laptops very low, but who would want a "retail" button with a shopping cart icon right next to the trackpad, even if the rest of the specs rock? GRRR.

Outland Traveller - new and laptop enabled!

Alpha

But the 64-bit Alpha processors are expensive, and Alpha's future in general is uncertain. Systems based on Intel's Merced are still a year or so away, and they're going to be quite expensive. PowerPC, on the other hand, has excellent floating-point performance, today, for cheap.

I think they missed an important point here. The PPC is wonderful arch., but it isn't going to be long before the industry starts the Big Move to 64-bit (Merced will probably be the catalyst, right before it bombs[0]). Unless IBM is planning a G5 based on the PPC620, this will leave them behind.[1]

Of course, if the price/performance favors the G4/5 enough (say, dual 800Mhz G4's for the price of a 1GHz Alpha) then it may get ahead, but otherwise any victory will be short-lived.

[0]: I still think that IA-64 is a plot by HP to kill Intel. Instead of trying to compete with them, HP offered to help design the new arch., then came up with something so horrible that there is no way it can succeed.

[1]: Before anyone flames me for implying that 64-bit is always superior, think about this: Once the industry begins the move to 64, the Alpha, Sparc, etc will all be there waiting. If Merced bombs, the chip most likely replace it is the Alpha, which blows away a PPC. Demand == lower prices.