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Re: Mma under Win95 (slow...)?

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  • Subject: [mg2789] Re: Mma under Win95 (slow...)?
  • From: ianc (Ian Collier)
  • Date: Sun, 17 Dec 1995 02:07:04 -0500
  • Organization: Wolfram Research, Inc.

In article <4ar63h$2hq at>, smithl at
(Leigh Smith) wrote:

> Mathematica for windows v.2.2.3 installs just fine under Win95 once you
> get the patch from mathsource.  That said, however, there are a lot of
> weird things which go wrong:
> 1.  Comparing execution times for the same calculations, v.2.2.3 under
> Win95 can be as much as 4 times slower(!) than under Win3.1 or Linux (I
> haven't yet tried Win NT).  I assume this must be due to residual 16 bit
> stuff in the kernel or the *16.mll mathlink dll?
> 2.  We haven't yet been able to run a remote mathematica kernel from the
> front end under Win95 (it works fine under Win3.1).  We've installed the
> local .mll file.  Is there a new tcp*.mll file needed as well?  Has anyone
> successfully connected to a remote kernel over TCPIP?
> 3.  We've suspected that occasionally files can be corrupted when being
> saved.  Unfortunately, it's really sporadic and we haven't been able to
> pin down the conditions under which it happens.
> Has anyone else seen the same behavior, or solved it?

The slow down experienced when running Mathematica for
Windows under Windows 95 (or Windows NT) compared to 
Windows 3.x appears to be due to a conflict between
the mechanism built in to Mathematica for polling 
between the kernel and front end to share processor time
and that provided by the operating systems in Windows 95
and Windows NT.

Wolfram Research is currently testing a version of
Mathematica that resolves this conflict. This should
be available early in the New Year.

I you have been experiencing this slowdown contact Wolfram 
Research Technical Support directly (support at for 
details on recieving this update when it is available.

Technical Support should also be able to help you getting 
your remote kernel connections working.

I hope this helps.


Ian Collier
Technical Sales Support
Wolfram Research, Inc.
tel:(217) 398-0700     fax:(217) 398-0747      ianc at
Wolfram Research Home Page:   

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