Re: Binaries Onyx->Impact

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Michael Jones (mtj++at++babar)
Fri, 15 Dec 1995 13:39:15 -0800

On Dec 15, 3:14pm, Robert D. King wrote:
> Subject: Binaries Onyx->Impact
:
:The new FAQ (#16) told me that my binaries should run without
:change on an impact.

The FAQ is right, but the issue is somewhat complicated in
that there is more to portability than Performer.

The Performer 1.2 answer (your current situation):

  Binaries *do* run on Onyx and Impact, but since IRIS
  Performer 1.2 supports IRIS GL only, when you run on
  Impact the handy-dandy "IRIS GL on OpenGL" (IGLOO)
  compatibility library is being used to make your IRIS
  GL application work atop OpenGL. This tool is not yet
  perfect, and later versions should be available soon.
  This is where your problem is. Check with SGI's Global
  Customer Support for an update.

  Note that even when this works, you'll not be seeing
  the best of Impact due to the hosting of IRIS GL on
  OpenGL.

The Performer 2.0 answer (by far the best answer):

  Get Performer 2.0 and either:

    a. build two executables from the same program (an
       IRIS GL and OpenGL version) -- running the IRIS GL
       version on Onyx (for maximum speed) and the OpenGL
       version on Impact for maximum speed.

    b. build just the OpenGL executable and share it
       across the two machines (partial performance on
       Onyx and full performance on Impact)

    c. build just the IRIS GL executable and share it
       across the two machines (partial performance on
       Impact and full performance on Onyx) [this is the
       only choice you have now, using Performer 1.2, and
       you'll need a better IGLOO to make it work well]

  I suggest choice "a" if possible.

-- 


Be seeing you,      Phone:415.933.1455  Fax:415.965.2658 M/S:8U-590
Michael T. Jones    Silicon Graphics, Advanced Systems Division
mtj++at++sgi.com         2011 N. Shoreline Blvd., Mtn. View, CA 94039-7311
                    "Du musst Amboss oder Hammer sein" -- Goethe

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