[Trilinos-Users] [EXTERNAL] Trilinos (Tpetra) creates ridiculously large executable and .o files

[Bartlett, Roscoe A]

Michael,

If you use explicit template instantation and shared libraries, the executable should be pretty small:

    -DTrilinos_ENABLE_EXPLICIT_INSTANTIATION=ON -DBUILD_SHARED_LIBS=ON

If you use static libs or implicit tempate instantation, you should expect huge executables.

We need to have a discussion in the Trilinos community about making these the default.  I think it would make a lot of sense if they were.

-Ross


From: Trilinos-Users [mailto:trilinos-users-bounces at trilinos.org] On Behalf Of Michael Bieri
Sent: Monday, May 23, 2016 9:37 AM
To: trilinos-users at trilinos.org
Subject: [EXTERNAL] [Trilinos-Users] Trilinos (Tpetra) creates ridiculously large executable and .o files

Hi,

I just tried the hands on tutorial from here: https://github.com/trilinos/Trilinos_tutorial/wiki/TrilinosHandsOnTutorial . The first examples work fine, but when I compile Lesson 4 ("Learn how to construct Tpetra matrices and vectors from existing Kokkos arrays.") I will get extremely large executable and .o files, in the range of 10 - 40 GB (on a Mac and a Linux computer). It seems to have something to do with Tpetra, as the examples before Tpetra generate normal-sized executables.

I do not exactly know what information to provide, but at least the compile command:

icpc-2013.sp1.1.106 -c -I/usr/local/mpich2-3.1.2/intel/include -std=c++11 -g -I/trilinos-12.6.3-Install/include -I/usr/include -DMYAPP_EPETRA main.cpp

Is it normal to have such big executables? What could be wrong?

Furthermore, with some uncertainity, as I just "remember":
I also observed that compilation took extremely long on the Linux machine and I think it also generated very large files, because once I ran out of disk memory (at least it said so). How large should Tpetra package be?

Best regards
Michael
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