[Beowulf] Fortran Array size question

Prentice Bisbal prentice at ias.edu
Tue Nov 3 13:17:02 EST 2009

Mikhail Kuzminsky wrote:
> In message from Prentice Bisbal <prentice at ias.edu> (Tue, 03 Nov 2009
> 12:09:07 -0500):
>> This question is a bit off-topic, but since it involves Fortran minutia,
>> I figured this would be the best place to ask. This code may eventually
>> run on my cluster, so it's not completely off topic!
>> Question: What is the maximum number of elements you can have in a
>> double-precision array in Fortran? I have someone creating a
>> 4-dimensional double-precision array. When they increase the dimenions
>> of the array to ~200 million elements, they get this error:
>> compilation aborted (code 1).
>> I'm sure they're hitting a Fortran limit, but I need to prove it. I
>> haven't been able to find anything using The Google.
> It is not Fortran restriction. It may be some compiler restriction.
> 64-bit ifort for EM64t allow you to use, for example, 400 millions
> elements.

That's exactly the compiler I'm using, and it's failing at ~200 million
elements. I'm  digging through the Intel documentation. Haven't found an
answer yet.

Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf

More information about the Beowulf mailing list