Re: A free copy of Maple or a frre maple webservre

On May 12, 5:57 am, Dave <f...@xxxxxxx> wrote:
SzH wrote:
On May 12, 1:57 pm, Karen Bindash <KarenBind...@xxxxxxxxxxxxxx> wrote:
It's hard to imagine how on earth you can verify the results easily on
a closed-source program. You would have far more chance on an open-
source program.

In practice there is little difference. Even if the source code is
accessible, the overwhelming majority of users does not have the
expertise and/or time to read the code and check that the
implementation is correct.

Agreed, but Karen's point about comparing Maple to Sage is very valid.
That would give me more confidence than simply using Maple. Vladimir
Bondarenko has shown numerous bugs in Maple which don't get fixed.

Vladimir never answered the question from William Stein about whether he
had ever used Sage. It would be interesting to know if Vladimir has. It
would be good if he could turn his bug-spotting software towards Sage -
but hopefully report bugs in a more professional manner than he tends to
do with Maple and Mathematica.

I think Vladimir's testing system assumes the program being tested
runs natively under Windows. Thus I suspect he won't use Sage until
we have a full native port to Windows. This is not easy, but we're
hard at work on it, especially thanks to financial support from
Microsoft Research.

I've never used Sage myself, but have been involved on and off for some
time in helping porting to Solaris - it's not quite there, but I think
will be soon. The developers are quite responsive - more so than I've
found with any commercial software.

Microsoft are financially supporting a native port to Windows - I
believe at the minute, it needs to be run under Cywin if used on a
Windows machine. Personally though, I avoid windows whenever possible,
which is 99.99999999% of the time.

Actually we do not even support Sage on Cygwin right now (though we
used to).
The way most people run Sage under Windows is that they download and
install
a custom Linux VMware virtual machine with Sage preinstalled. When
they run this virtual machine it starts a local web server,
and the user then uses Internet Explorer or Firefox or Opera
(locally)
to interact with Sage. Alternatively they ssh into the virtual
machine for
console access. I'm well aware that this is clumsy, but it
fortunately works.
Obviously we want a full native port that doesn't use Cygwin (much).

-- William
.

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