🚀 go-pugleaf

Hi people,

I'm working on some neural net software using ICC under OS/2 2.0. I need
to be able to allocate HUGE arrays, around the 3 megabyte mark, and I'm 
using an 8 megabyte machine. Thank god for virtual memory ;-)

Ok, so I malloc() the array(s), and everything _appears_ to be fine. I check
that malloc returns non-NULL values, etc, and it _seems_ that everything is
fine. Unfortunately, I'm getting floating point underflow errors when I
start performing operations on the arrays. The underflow errors don't seem
to occur in the same place (IPMD tells me this). I don't understand why this
is happening. Are there bugs in the VM management?

The reason why I think there are some virtual memory and/or compiler bugs
is that my code works _beautifully_ for smallish neural networks (< 2500
nodes and 10000 weights, in NN speak). But start asking the _same_ binary
code to build and train bigger networks results in underflow.

I'm using malloc() instead of DosAllocMem() to retain UNIX portability. I'll
try running the code on a UNIX workstation tomorrow and we'll see what
happens.

If you have any experiences with allocating large chunks of memory please
mail me or follow-up. I'd be most interested to hear from you.

Steve
-- 
   Steven Hayes                                    |  steveh@rmit.edu.au
   Royal Melbourne Institute of Technology (RMIT)  |  +61 3 660-2693