3.7.1 FORTRAN unit numbers used by Abaqus

Products: Abaqus/Standard Abaqus/Explicit

Reference

“Execution procedure for Abaqus: overview,” Section 3.1.1

Overview

Abaqus uses the FORTRAN unit numbers outlined in the table below. Unless noted otherwise, you should not try to write to these FORTRAN units from user subroutines.

For Abaqus/Standard, you should specify unit numbers 15–18 or unit numbers greater than 100 .

For Abaqus/Explicit, specify units 16–18 or unit numbers greater than 100 ending in 5 to 9, e.g. 105, 268, etc. You cannot write to the.sta file.

FORTRAN unit numbers

Code	Unit Number	Description
Abaqus/Standard	1	Internal database
	2	Solver file
	6	Printed output (`.dat`) file (You can write output to this file.)
	7	Message (`.msg`) file (You can write output to this file.)
	8	Results (`.fil`) file
	10	Internal database
	12	Restart (`.res`) file
	19–30	Internal databases (scratch files). Unit numbers 21 and 22 are always written to disk.
	73	Text file containing meshed beam cross-section properties (`.bsp`)

Code	Unit Number	Description
Abaqus/Explicit	6	Printed output (`.log`) .
	12	Restart (`.res`) file
	13	Old restart (`.res`) file, if applicable
	15	Analysis Preprocessor (`.dat` or `.pre`) file
	23	Communications (`.023`) file
	60	Global package (`.pac`) file
	61	Global state (`.abq`) file
	62	Temporary file
	63	Global selected results (`.sel`) file
	64	Message (`.msg`) file
	65	Output database (`.odb`) file
	67	Old package (`.pac`) file, if import from Abaqus/Explicit
	68	Old state (`.abq`) file, if import from Abaqus/Explicit
	69	Internal database; temporary file
If domain-parallel	70	Local package (`.pac.1`) file for CPU #1
	71	Local state (`.abq.1`) file for CPU #1
	73	Local selected results (`.sel.1`) file for CPU #1
	80	Local package (`.pac.2`) file for CPU #2
	81	Local state (`.abq.2`) file for CPU #2
	83	Local selected results (`.sel.2`) file for CPU #2
	...	Add three files, incrementing units by 10, for each additional CPU