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20020813: McIDAS-X v2002 MAP errors on GMS image IMGCOPYed to SPARC (cont.)

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  • Subject: 20020813: McIDAS-X v2002 MAP errors on GMS image IMGCOPYed to SPARC (cont.)
  • Date: Tue, 13 Aug 2002 13:53:18 -0600
>From: Robert Mullenax <address@hidden>
>Organization: Universal Weather
>Keywords: McIDAS-X v2002 Linux GMS IMGCOPY

Robert,

>I just built McIDAS-X 2002a on a Solaris 8 Intel box using gcc/g77
>,the 2.95 (I believe) version from sunfreeware.com.   The GMS imagery
>works fine on it.

Well, I just tried out doing displays on Sun Solaris SPARC (gcc/g77,
the display worked), Sun Solaris x86 (Sun SC5.0, the display worked),
RedHat 7.1 Linux (gcc/g77, the display failed), and Compaq Tru64
(Compaq compilers, the display caused mcimage to core dump).

Given the results under Tru64, I have a feeling that there is some
problem with McIDAS code.  Since a number of the words in the GMS nav
block are in IBM floating point format, I am betting that something is
being unpacked incorrectly and is causing an array overflow.  It would
then depend on exactly how the routine is linked to see the effect or
not.

Tom