Can Mac & Linux do this?

Can Mac & Linux do this?

Post by Michael Hopkin » Tue, 04 Apr 2000 04:00:00



Hi to all Linux gurus (or probably even novices),

I have a question that may seem very simple, but Im a newcomer to the
possibilities of Linux.  I am considering putting Linux on a desktop &
laptop Mac to allow me to develop maths software for use in the
corporate NT-biased community.

My main question is:

Can an Windows NT-based (or even Unix) network mount an iBook as a
Linux server via the built-in ethernet for demonstrating X-windows
applications?

This raises some particular issues:

1) Are there enough powerful & reliable tools/resources in the current
or near-future PPC Linux world for developing GUI-based maths
programs?  What about graphics & linear algebra libraries; can ANY be
imported to the Mac world & recompiled?

2) What is the Linux built-in ethernet support like for desktop &
laptop PPC Macs?

3) Which PPC Linux distribution is considered easiest to install &
most stable?

4) Would it be straightforward to port a Mac PPC-based X-windows
application with all relevant libraries etc to an NT or Unix server
running another processor (Intel, SGI, Sun).  How about compiler
optimisations for speed/accuracy of intensive maths calculations?

5) Is there some form of X-window terminal application for MacOS?  I
dont remember having seen one around, but then Ive only looking at
Linux stuff for a week or so.

Im trying to avoid buying a PC laptop for development & serving in
this way as I want to get an iBook or Powerbook to stay Mac-only for
all my other needs.  Who knows, I may go over completely to Linux. I
would appreciate all comments and opinions.  Please enlighten me!

Thanks in advance for your time,

Michael Hopkins

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Can Mac & Linux do this?

Post by Steven G. Johns » Tue, 04 Apr 2000 04:00:00



>Can an Windows NT-based (or even Unix) network mount an iBook as a
>Linux server via the built-in ethernet for demonstrating X-windows
>applications?

You can certainly do it under Unix; under Windows, you will need an X
server program (technically, the Linux machine here is the "X client"...I
don't want to get into the reasons for the terminology, though).  There
are commercial X servers available for Windows, as well as one or two free
ones I believe.

Quote:>1) Are there enough powerful & reliable tools/resources in the current
>or near-future PPC Linux world for developing GUI-based maths
>programs?  What about graphics & linear algebra libraries; can ANY be
>imported to the Mac world & recompiled?

It sounds like there are two separate questions here.  (1) Are there
powerful math and GUI libraries available for Linux development and (2)
are these libraries also available under the MacOS.

The answer to (1) is certainly yes.  The standard linear algebra library,
well-known for stability and robustness, is LAPACK
(www.netlib.org/lapack), which is entirely free and compiles just fine
under LinuxPPC.  (LAPACK is even used in Matlab these days.)  There are
many other free numerical libraries, and there are even higher-level
programs like GNU Octave, a free Matlab-like program, all of which compile
and run fine under LinuxPPC.  There are also a number of good GUI
libraries for Linux, such as GTK+ (www.gtk.org) (GTK even has an excellent
graphical interface-builder program called Glade).  So, you can certainly
write good GUI programs without too much trouble.  (You can also program
directly using the low-level X APIs, of course, but this is more trouble
than it's worth.)

As for (2), GTK+ has been ported to Windows and BeOS, but not yet to the
MacOS.  There are other free GUI libraries for Linux, though, that have
Mac ports, such as wxWindows (wxwindows.org).

Quote:>2) What is the Linux built-in ethernet support like for desktop &
>laptop PPC Macs?

It works.  What else is there to say?

Quote:>3) Which PPC Linux distribution is considered easiest to install &
>most stable?

I use LinuxPPC myself, but many people have also sung the praises of
YellowDog.  It doesn't seem like the differences are very great, although
LinuxPPC has the advantage right now of having the newest release, I
believe.

Be aware that the latest Mac "Firewire" laptops are somewhat bleeding-edge
as far as Linux support is concerned.  The situation has improved rapidly,
though (I just installed LinuxPPC on one of the new PowerBooks yesterday,
using the latest kernel updates, and it is working fine so far, the only
problem being that sleep isn't supported yet).

Quote:>4) Would it be straightforward to port a Mac PPC-based X-windows
>application with all relevant libraries etc to an NT or Unix server
>running another processor (Intel, SGI, Sun).

As long as you write in a high-level language and use portable libraries
(like LAPACK, GTK, ... essentially anything you can compile on LinuxPPC
will be portable), you can recompile with almost no troubles on other Unix
systems, regardless of the CPU.  (In fact, I usually test my own programs
on multiple architectures in this way, as it's a good way of catching
bugs.)  The processor is almost irrelevant as long as you have source
code.

Porting to Windows might be a little more trouble.  Besides the fact that
the development environments are different (although you can install a
free Unix-like environment for Windows called Cygwin32), the main problem
is if you use a graphics library that is specific to X-windows.  Happily,
the GTK+ library, and others such as wxWindows, have Windows ports, so if
you use them you should not have major difficulties.

Quote:>How about compiler
>optimisations for speed/accuracy of intensive maths calculations?

Compiler optimizations on any CPU don't tend to improve the accuracy of
calculations (sometimes the opposite); you need careful numerical analysis
for that.  As far as performance goes, gcc for PowerPC isn't too bad these
days, especially now that it supports an -mcpu=750 flag to optimize for
the G3.

Quote:>5) Is there some form of X-window terminal application for MacOS?  I
>dont remember having seen one around, but then Ive only looking at
>Linux stuff for a week or so.

There is an X server called MacX from Apple, as well as several other
commercial ones.  (An "X server" is what allows you to run X programs on
your Linux machine and display them on your Mac.)

I hope this is helpful!

Cordially,
Steven G. Johnson

 
 
 

Can Mac & Linux do this?

Post by John Fishe » Tue, 04 Apr 2000 04:00:00



> This raises some particular issues:

Sorry I can't answer your main question.  My suspicion, provided an NT
box can mount other (say, intel) linux machines the way you speak of, is
that an iBook running Linux could also be mounted.  But maybe I'm just
wildly optimistic.

Quote:> 1) Are there enough powerful & reliable tools/resources in the current
> or near-future PPC Linux world for developing GUI-based maths
> programs?  What about graphics & linear algebra libraries; can ANY be
> imported to the Mac world & recompiled?

It's not clear what you're looking for.  If you want an IDE, yes, there
are some.  If you're looking for graphics libraries, both the Gnome and
KDE projects have some which should simplify the creation of X
applications.

Graphics and linear algebra libraries abound.  Check out
http://www.netlib.org for almost any kind of mathematical or scientific
library.  If, by 'graphics' you mean you're interested in graphing, I
can recommend the DISLIN library from personal experience.

Pretty much all libraries you'll find on netlib, for example, are fairly
cross-platform.  Unless they do some sort of graphical stuff, in which
case all bets are off; some still are, however.

Quote:> 2) What is the Linux built-in ethernet support like for desktop &
> laptop PPC Macs?

My beige G3 has had zero problems with ethernet; I use a cable modem, so
it's regularly tested.  This is 10baseT, though -- I don't know anything
about how the 100baseT works.

Quote:> 3) Which PPC Linux distribution is considered easiest to install &
> most stable?

Er, I think they're all stable, if you stick to stable kernels and
stable versions of the core programs (which is what all the
distributions will provide).  I'm partial to LinuxPPC, having used it
for a while now.  Some people have complained about installation
troubles with the new 2000 edition; for the record, mine went smoothly.

Quote:> 4) Would it be straightforward to port a Mac PPC-based X-windows
> application with all relevant libraries etc to an NT or Unix server
> running another processor (Intel, SGI, Sun).  How about compiler
> optimisations for speed/accuracy of intensive maths calculations?

Define 'straightforward' ;-)  Seriously, I'm sure this would entail some
work.  The more cross-platform the graphics and GUI libraries you decide
to use are, the easier this would be, I guess.

Quote:> 5) Is there some form of X-window terminal application for MacOS?  I
> don?t remember having seen one around, but then I?ve only looking at
> Linux stuff for a week or so.

I've used MI/X before.  A bit limited, and not terribly pretty, but it
works, and is quick.  Sorry, I don't have an URL handy.

Quote:> I?m trying to avoid buying a PC laptop for development & serving in
> this way as I want to get an iBook or Powerbook to stay Mac-only for
> all my other needs.  Who knows, I may go over completely to Linux. I
> would appreciate all comments and opinions.  Please enlighten me!

I don't have a laptop of any kind, so I can't comment much on them, save
to say that there are some problems with Linux on the iBook (I think it
doesn't have sound yet) and the newest Powerbooks.  If you want to be up
and running with minimal hassles *now* you might be better off getting
one of the older ones.  Work is going on now to more fully support the
new hardware, though.

John

 
 
 

Can Mac & Linux do this?

Post by billy ba » Tue, 04 Apr 2000 04:00:00




Quote:>My main question is:

>Can an Windows NT-based (or even Unix) network mount an iBook as a
>Linux server via the built-in ethernet for demonstrating X-windows
>applications?

yes... WinVnc, Xvnc... the latest 2.2.15pre15 kernel supports the iBook's
ethernet adapter... NFS, Samba, FTP server, HTTP server, take your pick

Quote:

>This raises some particular issues:

>1) Are there enough powerful & reliable tools/resources in the current
>or near-future PPC Linux world for developing GUI-based maths
>programs?  What about graphics & linear algebra libraries; can ANY be
>imported to the Mac world & recompiled?

it doesn't matter about PPC Linux or not... you're doing X, QT, KDE,
GTK lib programming... X is X is X is X... which is why X will be
around for a long time...

Quote:>2) What is the Linux built-in ethernet support like for desktop &
>laptop PPC Macs?

you have a complete suite of hundreds of networking tools, protocols,
utilities, and other commands (not counting all the gui stuff)...

Quote:>3) Which PPC Linux distribution is considered easiest to install &
>most stable?

first, understand this:  Linux: It's All Good!(tm)

underneath, all distributions are the same (OK, some kernels are
tweaked)... the difference will be in the file system layout, names
of files, and value-added software included...

the best way, IMO, to boot Linux on a PPC Mac is to use the BootX
control panel (you can use different kernels, pass kernel args, etc.)...
i'm not impressed with Open Firmware, although it looks doable...

Quote:>4) Would it be straightforward to port a Mac PPC-based X-windows
>application with all relevant libraries etc to an NT or Unix server
>running another processor (Intel, SGI, Sun).  How about compiler
>optimisations for speed/accuracy of intensive maths calculations?

X is X, but it depends on how generic... add some unique libs and you'll
run into trouble... the gcc compiler provides optimization and
depending on who you talk to, is either the greatest thing since sliced
bread, or terrible... i'm banking that it's a good compiler and more
than up to the task... some gcc m68k cross-compilers may have problems,
but for the most part, gcc is quite flexible...

you need intensive/special math? write your own calls...

Quote:>5) Is there some form of X-window terminal application for MacOS?  I
>dont remember having seen one around, but then Ive only looking at
>Linux stuff for a week or so.

MachTen from Tenon Intersystems... MacOSX... but i'd use Vnc...you're
not going to run X11 at the same time unless you use Tenon's software

Quote:>Im trying to avoid buying a PC laptop for development & serving in
>this way as I want to get an iBook or Powerbook to stay Mac-only for
>all my other needs.  Who knows, I may go over completely to Linux. I
>would appreciate all comments and opinions.  Please enlighten me!

look for an older G3 PowerBook... the iBook is not just there (yet);
ethernet is working... apm is not, and the modem is not working...

hth

Quote:>Thanks in advance for your time,

>Michael Hopkins

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>     `All models are wrong, but some are useful' - George Box

 
 
 

Can Mac & Linux do this?

Post by Maurice Diamanti » Tue, 04 Apr 2000 04:00:00


Quote:>> 1) Are there enough powerful & reliable tools/resources in the current
>> or near-future PPC Linux world for developing GUI-based maths
>> programs?  What about graphics & linear algebra libraries; can ANY be
>> imported to the Mac world & recompiled?

See "Scilab Home Page"

    http://www-rocq.inria.fr/scilab/

A free matlab like tool (run very well on linuxppc)

For a free MacOS/Unix/Windoze compatible GUI language programming,
see TCL :

    http://dev.scriptics.com/resource/

--

cole Nationale Suprieure  de  Techniques Avances
 Laboratoire    de     Mathmatiques    Appliques
     http://www.ensta.fr/~diam

 
 
 

Can Mac & Linux do this?

Post by Martin Costabe » Tue, 04 Apr 2000 04:00:00




[]
> >1) Are there enough powerful & reliable tools/resources in the current
> >or near-future PPC Linux world for developing GUI-based maths
> >programs?  What about graphics & linear algebra libraries; can ANY be
> >imported to the Mac world & recompiled?

> It sounds like there are two separate questions here.  (1) Are there
> powerful math and GUI libraries available for Linux development and (2)
> are these libraries also available under the MacOS.

> The answer to (1) is certainly yes.  The standard linear algebra library,
> well-known for stability and robustness, is LAPACK
> (www.netlib.org/lapack), which is entirely free and compiles just fine
> under LinuxPPC.  (LAPACK is even used in Matlab these days.)  There are
> many other free numerical libraries, and there are even higher-level
> programs like GNU Octave, a free Matlab-like program, all of which compile
> and run fine under LinuxPPC.  There are also a number of good GUI
> libraries for Linux, such as GTK+ (www.gtk.org) (GTK even has an excellent
> graphical interface-builder program called Glade).  So, you can certainly
> write good GUI programs without too much trouble.  (You can also program
> directly using the low-level X APIs, of course, but this is more trouble
> than it's worth.)

> As for (2), GTK+ has been ported to Windows and BeOS, but not yet to the
> MacOS.  There are other free GUI libraries for Linux, though, that have
> Mac ports, such as wxWindows (wxwindows.org).

You might want to check out Scilab at http://www-rocq.inria.fr/scilab/
This is an Open Source Matlab-lookalike like Octave, but with better
graphics and a GUI. They have precompiled binaries for LinuxPPC, Windows
and some other UNIX and Linux platforms. SRPMs and ppc RPMs are
available, too. Scilab has all the Lapack maths compiled in, can be
linked with Fortran and C programs, and its GUI programming is based on
the tcl/tk graphics language. Tcl/tk exists also under MacOS and
Windows.

Disclaimer: My only relation with Scilab is that I am using it in
teaching. Usually I sing its praise on Mondays, then spend two days
trying to get students to understand and use it (computing and
visualising solutions of partial differential equations and
understanding the concepts of stability and consistency of numerical
algorithms), and at the end of the week I send hate mail to
comp.soft-sys.math.scilab about this buggy program.

--
Martin

 
 
 

Can Mac & Linux do this?

Post by Michael Hopkin » Tue, 04 Apr 2000 04:00:00


Thanks for the comments guys. You know what, I never saw the original
Steven Johnson email.  What happened there, do you think?




> []
> > >1) Are there enough powerful & reliable tools/resources in the current
> > >or near-future PPC Linux world for developing GUI-based maths
> > >programs?  What about graphics & linear algebra libraries; can ANY be
> > >imported to the Mac world & recompiled?

> > It sounds like there are two separate questions here.  (1) Are there
> > powerful math and GUI libraries available for Linux development and (2)
> > are these libraries also available under the MacOS.

> > The answer to (1) is certainly yes.  The standard linear algebra library,
> > well-known for stability and robustness, is LAPACK
> > (www.netlib.org/lapack), which is entirely free and compiles just fine
> > under LinuxPPC.  (LAPACK is even used in Matlab these days.)  There are
> > many other free numerical libraries, and there are even higher-level
> > programs like GNU Octave, a free Matlab-like program, all of which compile
> > and run fine under LinuxPPC.  There are also a number of good GUI
> > libraries for Linux, such as GTK+ (www.gtk.org) (GTK even has an excellent
> > graphical interface-builder program called Glade).  So, you can certainly
> > write good GUI programs without too much trouble.  (You can also program
> > directly using the low-level X APIs, of course, but this is more trouble
> > than it's worth.)

> > As for (2), GTK+ has been ported to Windows and BeOS, but not yet to the
> > MacOS.  There are other free GUI libraries for Linux, though, that have
> > Mac ports, such as wxWindows (wxwindows.org).

> You might want to check out Scilab at http://www-rocq.inria.fr/scilab/
> This is an Open Source Matlab-lookalike like Octave, but with better
> graphics and a GUI. They have precompiled binaries for LinuxPPC, Windows
> and some other UNIX and Linux platforms. SRPMs and ppc RPMs are
> available, too. Scilab has all the Lapack maths compiled in, can be
> linked with Fortran and C programs, and its GUI programming is based on
> the tcl/tk graphics language. Tcl/tk exists also under MacOS and
> Windows.

> Disclaimer: My only relation with Scilab is that I am using it in
> teaching. Usually I sing its praise on Mondays, then spend two days
> trying to get students to understand and use it (computing and
> visualising solutions of partial differential equations and
> understanding the concepts of stability and consistency of numerical
> algorithms), and at the end of the week I send hate mail to
> comp.soft-sys.math.scilab about this buggy program.

> --
> Martin

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Can Mac & Linux do this?

Post by Dan Burc » Tue, 04 Apr 2000 04:00:00


: >3) Which PPC Linux distribution is considered easiest to install &
: >most stable?
:
: I use LinuxPPC myself, but many people have also sung the praises of
: YellowDog.  It doesn't seem like the differences are very great, although
: LinuxPPC has the advantage right now of having the newest release, I
: believe.
:

Actually, our new Champion Server 1.2 release is based on Red Hat 6.2 and
newer packages whereas LinuxPPC 2000 is based on Red Hat 6.1.

Regards,
Dan

Dan Burcaw

 
 
 

Can Mac & Linux do this?

Post by Vadi » Fri, 28 Apr 2000 04:00:00



> Hi to all Linux gurus (or probably even novices),

> I have a question that may seem very simple, but I?m a newcomer to the
> possibilities of Linux.  I am considering putting Linux on a desktop &
> laptop Mac to allow me to develop maths software for use in the
> corporate NT-biased community.

> My main question is:

> Can an Windows NT-based (or even Unix) network mount an iBook as a
> Linux server via the built-in ethernet for demonstrating X-windows
> applications?

> This raises some particular issues:

> 1) Are there enough powerful & reliable tools/resources in the current
> or near-future PPC Linux world for developing GUI-based maths
> programs?  What about graphics & linear algebra libraries; can ANY be
> imported to the Mac world & recompiled?

> 2) What is the Linux built-in ethernet support like for desktop &
> laptop PPC Macs?

> 3) Which PPC Linux distribution is considered easiest to install &
> most stable?

> 4) Would it be straightforward to port a Mac PPC-based X-windows
> application with all relevant libraries etc to an NT or Unix server
> running another processor (Intel, SGI, Sun).  How about compiler
> optimisations for speed/accuracy of intensive maths calculations?

> 5) Is there some form of X-window terminal application for MacOS?  I
> don?t remember having seen one around, but then I?ve only looking at
> Linux stuff for a week or so.

> I?m trying to avoid buying a PC laptop for development & serving in
> this way as I want to get an iBook or Powerbook to stay Mac-only for
> all my other needs.  Who knows, I may go over completely to Linux. I
> would appreciate all comments and opinions.  Please enlighten me!

> Thanks in advance for your time,

> Michael Hopkins

> _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

>      _/_/_/     _/_/_/     _/_/_/    ACS Consultancy
>    _/    _/   _/     _/  _/
>   _/_/_/_/   _/           _/_/_/     Information Sciences for Industry
>  _/    _/    _/                _/
> _/    _/      _/_/_/     _/_/_/      Telephone/Fax: 01732~463519 (UK)

> _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

>      `All models are wrong, but some are useful' - George Box

To answer you main question:  YES.  If you can boot your iBook into
Linux, it becomes just another Unix box, regardless of platform.
Whatever you can do with Unix (Linux) on a TCP/IP network you should be
able to do with your iLinuxBook.

All the other questions you can probably answer yourself, if you treat
your iBook as another Linux box.  After you get the OS running, there
really should not be any difference between your platform and a dedicated
PC with Linux on it.

 
 
 

Can Mac & Linux do this?

Post by Tim Hayn » Sat, 29 Apr 2000 04:00:00



> This raises some particular issues:

> 1) Are there enough powerful & reliable tools/resources in the current
> or near-future PPC Linux world for developing GUI-based maths
> programs?  What about graphics & linear algebra libraries; can ANY be
> imported to the Mac world & recompiled?

Of course. It's that open-source thing at it again, y'know. Octave comes to
mind... (given that the Maths library section is not exactly first on my
normal port of call).

Quote:> 2) What is the Linux built-in ethernet support like for desktop &
> laptop PPC Macs?

Seems pretty good to me... (says me, had 8M/s over the 100Mbit lan here
last night during benchmark testing)

Quote:> 3) Which PPC Linux distribution is considered easiest to install &
> most stable?

I tried LinuxPPC but the CD image didn't seem to want to boot and was a
pain in the *to burn (under NT, at least). So now I'm on Debian/PPC and
it really is an absolute doddle (well given that I'm a debian/x86 freak as
well in my other pyjamas... ;)

Putting it one way, PPC is a world apart from the x86 Linux scene. You have
to rely on open source rather a lot more, and the installation can be a bit
hair-raising (especially if you've never had to cope with hda=autotune and
fdisk-a-la-ppc with 10 partitions wondering *which* of the blighters was
the MacOS one you *didn't* want to remove :)

Quote:> 4) Would it be straightforward to port a Mac PPC-based X-windows
> application with all relevant libraries etc to an NT or Unix server
> running another processor (Intel, SGI, Sun).

The library and application bits won't be a problem. X might be, but if
you're using e.g. GTK+ then that's been ported to windoze already (cf
<http://www.veryComputer.com/;), so using that as your GUI toolkit is pretty
portable.

Quote:> How about compiler optimisations for speed/accuracy of intensive maths
> calculations?

Nossure. I don't think you'll beat regular gcc myself. Have a blast, see
what happens.

Quote:> 5) Is there some form of X-window terminal application for MacOS?  I
> don=92t remember having seen one around, but then I=92ve only looking at
> Linux stuff for a week or so.

I've not seen any but then again I've not spent long looking. There's
definitely a fair few telnet apps around though...

Quote:> I=92m trying to avoid buying a PC laptop for development & serving in
> this way as I want to get an iBook or Powerbook

Powerbook, please. 400MHz and either SCSI or Firewire depending on whether
you go for this year's or last year's standard.

Quote:> to stay Mac-only for all my other needs.  Who knows, I may go over
> completely to Linux. I would appreciate all comments and opinions.

Well this powerbook, acquired about 10 days ago for chip & hardware
solidity reasons, is now dual-booting linux with kernel 2.2.15-pre7 along
with the best of them.

Quote:> Please enlighten me!

I'm using wmaker atm on here, but I'm sure that's been ported as well ;8)

~Tim
--
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Can Mac & Linux do this?

Post by David Efflan » Sat, 29 Apr 2000 04:00:00



>I have a question that may seem very simple, but Im a newcomer to the
>possibilities of Linux.  I am considering putting Linux on a desktop &
>laptop Mac to allow me to develop maths software for use in the
>corporate NT-biased community.

>My main question is:

>Can an Windows NT-based (or even Unix) network mount an iBook as a
>Linux server via the built-in ethernet for demonstrating X-windows
>applications?

One way or another.  If not natively, then with VNC (see below).

Quote:>4) Would it be straightforward to port a Mac PPC-based X-windows
>application with all relevant libraries etc to an NT or Unix server
>running another processor (Intel, SGI, Sun).  How about compiler
>optimisations for speed/accuracy of intensive maths calculations?

>5) Is there some form of X-window terminal application for MacOS?  I
>dont remember having seen one around, but then Ive only looking at
>Linux stuff for a week or so.

This may do the trick for free:

http://www.uk.research.att.com/vnc/index.html

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Can Mac & Linux do this?

Post by Richard Willia » Sat, 29 Apr 2000 04:00:00





>>5) Is there some form of X-window terminal application for MacOS?  I
>>dont remember having seen one around, but then Ive only looking at
>>Linux stuff for a week or so.

>This may do the trick for free:

>http://www.uk.research.att.com/vnc/index.html

See also:

http://www.microimages.com/freestuf/mix/macindex.htm

Richard.

 
 
 

Can Mac & Linux do this?

Post by Jan O Jonase » Sat, 29 Apr 2000 04:00:00




> > How about compiler optimisations for speed/accuracy of intensive
> >maths calculations?

> Nossure. I don't think you'll beat regular gcc myself. Have a blast,
> see what happens.

I don't do (much) optimization myself, but the PPC gcc is from what i
read here not the best compiler when it comes to optimizing.

Quote:> > 5) Is there some form of X-window terminal application for MacOS?  I
> >don=92t remember having seen one around, but then I=92ve only looking
> >at Linux stuff for a week or so.

> I've not seen any but then again I've not spent long looking. There's
> definitely a fair few telnet apps around though...

Telnet apps yes, some of the best are Better Telnet and Nifty
Telnet. For a X window server you want to try eXodus (comercial), MI/X
is free (get it from
http://tnt.microimages.com/freestuff/mix/download.htm) or if you can
find it anywhere MacX from Apple, but i only have bad experiences with
that one.

--
                           Mvh/re Jan Jonasen
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Can Mac & Linux do this?

Post by chris_bar.. » Sat, 29 Apr 2000 04:00:00


MOst of your questions have been answered, but I'll a couple notes. I'm
not even using Linux PPC yet, but I'm planning to soon.

Quote:> 1) Are there enough powerful & reliable tools/resources in the current
> or near-future PPC Linux world for developing GUI-based maths
> programs?  What about graphics & linear algebra libraries; can ANY be
> imported to the Mac world & recompiled?

GTK and WxWindows are both ported to Mac-OS

Quote:> running another processor (Intel, SGI, Sun).  How about compiler
> optimisations for speed/accuracy of intensive maths calculations?

YOu might want to take a look at Absoft FORTRAN. They have compilers for
Mac-OS, PPC-Linux, Intel-Linux, Windows, etc. They do a very good job of
optimising for PPC-Mac-OS , so I'm hoping they'll do a good job for
PPC-Linux as well.

Quote:> 5) Is there some form of X-window terminal application for MacOS?  I
> don=92t remember having seen one around, but then I=92ve only looking

There is a quite functional free one at:
http://tnt.microimages.com/www/html/freestuf/mix/mix.htm

-Chris

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Before you buy.

 
 
 

Can Mac & Linux do this?

Post by Colin Brou » Sat, 29 Apr 2000 04:00:00




> > Hi to all Linux gurus (or probably even novices),

> > I have a question that may seem very simple, but I?m a newcomer to the
> > possibilities of Linux.  I am considering putting Linux on a desktop &
> > laptop Mac to allow me to develop maths software for use in the
> > corporate NT-biased community.

        [Detailed questions deleted]

Quote:> To answer you main question:  YES.  If you can boot your iBook into
> Linux, it becomes just another Unix box, regardless of platform.
> Whatever you can do with Unix (Linux) on a TCP/IP network you should be
> able to do with your iLinuxBook.

> All the other questions you can probably answer yourself, if you treat
> your iBook as another Linux box.  After you get the OS running, there
> really should not be any difference between your platform and a dedicated
> PC with Linux on it.

One thing to watch for is transferring data files between
architectures. For example, if one is 64 bit and the other 32 bit, or
if one is big-endian and the other little-endian, then data files may
need to be converted, or suffer from a change in accuracy when moved
from one architecture to another. Similarly, depending on maths
library/computation method, results from the same program may be
marginally different on different architectures - typically if the
architectures do their floating point maths to different precisions.
This is, however, more an application/portability issue: either, how
does the application you want to use cope with this situation, or (if
you are writing your own applications) is this something I need to
take into considertation?

Most text-based data formats should be OK, but binary ones might not
be; getting floating point math right is notoriously difficult!

HTH

Cheers

Colin

ps Remove 'REMOVE.' from Reply-To field to reply.

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