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Linux/DM388: Unable to install IPNC-RDK-CSK-3.9.0-Linux-x86-Install.bin

Part Number: DM388

Tool/software: Linux

I have downloaded IPNC-RDK-CSK-3.9.0-Linux-x86-Install.bin however it crashes when I attempt to execute it.  The invocation is:

. IPNC-RDK-CSK-3.9.0-Linux-x86-Install.bin &

(I have to put it in the background otherwise it crashes the shell when it fails.)  Here's the fail message:

bash: xrealloc: ../../../bash/lib/sh/zmapfd.c:76: cannot allocate 1073741888 bytes (2150154240 bytes allocated)

The output of 'free -m' run before attempting the install is:

             total       used       free     shared    buffers     cached
Mem:          8078       2272       5806          0        559       1338

So it appears I have enough free memory to accommodate the allocation.

One potential issue is that the instructions state that I have to be running "64-bit Linux Ubuntu 14.04 or later" and for various reasons, I'm actually running "64 bit Ubuntu 12.04".  There are some logistics issues preventing me from upgrading.  I shall tackle those issues if necessary but was hoping to confirm that doing so is highly likely to be the solution to my problem and not something else.

--EDIT--

It turns out that I'd installed Linux long enough ago that I'd forgotten that I was running a 32-bit version.  With 32 bits, I can only address 4GB.  Some of that is taken up with process text, etc. leaving only 3GB that can be malloc'd.  The malloc of another GB on top of the 2 GB already malloc'd put me over the limit.