[Trilinos-Users] Deterministic messaging?

[Willenbring, James M]

John,

We have discussed this a few times at developer meetings.  The consensus has been that bit-level reproducibility is prohibitively expensive.  Are you able to modify the test to have some tolerance?  This seems to be the most common way to avoid needing bit-level reproducibility.

Jim

-----Original Message-----
From: trilinos-users-bounces at software.sandia.gov [mailto:trilinos-users-bounces at software.sandia.gov] On Behalf Of John R Cary
Sent: Wednesday, June 15, 2011 6:33 AM
To: Trilinos Users
Subject: [Trilinos-Users] Deterministic messaging?

We have a regression test that uses a trilinos solver.
It seems to drift a bit (numerical errors) when run in
parallel but not serial.

Is the messaging when using trilinos solvers deterministic
so that one can have bit-level reproducibility?

Can it be made so?

Thx....John

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