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From: amado.alves@gmail.com
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Subject: Re: Larger matrices
Date: Mon, 11 Aug 2008 04:51:01 -0700 (PDT)
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Thanks to all.
I have succeeded by increasing the stack size of a subtask to 1G!

   task type Subtask_T;
   for Subtask_T'Storage_Size use 1_000_000_000;
   task body Subtask_T is
   begin
      Main;
   end;

This compiles and runs on GNAT on Windows sans any extra pragma or
option.
It processes the 5000 x 5000 matrix (multiplication by a vector).

I tried 200M first for the Storage_Size. Not enough. Don't know why.
5000 x 5000 << 200M. BTW the semantical maximum is Integer'Last.

On Mac OS X I simply cannot run multitasks.