Simulation Output Files
Every analysis in Xyce writes one or more output files next to the netlist.
Which files appear depends on the analysis type and the FORMAT option of the
.PRINT directive. This page lists every trigger from the Xyce Reference
Guide (§2.1.31, print output tables 2-19 to 2-29) with the produced file,
which of the files is the primary one, and whether Xyce Studio can load it.
Notation
circuit is the netlist file name without its extension- Primary files receive the user-specified
FILE= name; secondary files
always use the default netlist-derived name
- Xyce Studio parsers: raw (
xyce_raw_file), prn
(xyce_prn_file, STD/NOINDEX/GNUPLOT/SPLOT formats), csv
(xyce_csv_file, CSV format), tecplot (xyce_tecplot_file,
TECPLOT format) and csd
(xyce_csd_file, PROBE format) plus touchstone (.LIN s-parameter
output)
AC analysis
AC generates two files: the primary frequency-domain file and the
secondary time-domain initial-conditions file (enabled by adding .OP).
| Trigger |
File |
Domain |
P/S |
Studio parser |
.PRINT AC, GNUPLOT, SPLOT, NOINDEX |
circuit.FD.prn |
freq |
P |
prn |
.PRINT AC FORMAT=CSV |
circuit.FD.csv |
freq |
P |
csv |
.PRINT AC FORMAT=RAW (incl. Xyce -a) |
circuit.raw |
freq |
P |
raw |
.PRINT AC FORMAT=TECPLOT |
circuit.FD.dat |
freq |
P |
tecplot |
.PRINT AC FORMAT=PROBE |
circuit.csd |
freq |
P |
csd |
.PRINT AC_IC |
circuit.TD.prn |
time |
S |
prn |
.PRINT AC_IC FORMAT=CSV |
circuit.TD.csv |
time |
S |
csv |
.PRINT AC_IC FORMAT=RAW |
circuit.raw |
time |
S |
raw |
.PRINT AC_IC FORMAT=TECPLOT |
circuit.TD.dat |
time |
S |
tecplot |
.PRINT AC_IC FORMAT=PROBE |
circuit.TD.csd |
time |
S |
csd |
DC analysis
| Trigger |
File |
Studio parser |
.PRINT DC, GNUPLOT, SPLOT, NOINDEX |
circuit.prn |
prn |
.PRINT DC FORMAT=CSV |
circuit.csv |
csv |
.PRINT DC FORMAT=RAW (incl. Xyce -a) |
circuit.raw |
raw |
.PRINT DC FORMAT=TECPLOT |
circuit.dat |
tecplot |
.PRINT DC FORMAT=PROBE |
circuit.csd |
csd |
Harmonic balance (HB)
.PRINT HB produces all three files at once; a FILE= name only redirects
the primary (time-domain) file. With .STEP the IC data goes through a
temporary file before being appended to circuit.hb_ic.prn.
| Trigger |
File |
Domain |
P/S |
Studio parser |
.PRINT HB, GNUPLOT, SPLOT |
circuit.HB.TD.prn |
time |
P |
prn |
|
circuit.HB.FD.prn |
freq |
S |
prn |
|
circuit.hb_ic.prn |
time |
S |
prn |
.PRINT HB FORMAT=CSV |
circuit.HB.TD.csv, circuit.HB.FD.csv, circuit.hb_ic.csv |
— |
P, S, S |
csv |
.PRINT HB FORMAT=TECPLOT |
circuit.HB.TD.dat, circuit.HB.FD.dat, circuit.hb_ic.dat |
— |
P, S, S |
tecplot |
.PRINT HB_FD |
circuit.HB.FD.prn (also .csv, .dat) |
freq |
P |
prn, csv |
.PRINT HB_TD |
circuit.HB.TD.prn (also .csv, .dat) |
time |
P |
prn, csv |
.PRINT HB_STARTUP (with HBINT STARTUPPERIODS) |
circuit.startup.prn (also .csv, .dat) |
time |
S |
prn, csv |
.PRINT HB_IC (with SAVEICDATA=1) |
circuit.hb_ic.prn (also .csv, .dat) |
time |
S |
prn, csv |
HB supports neither RAW nor PROBE format.
Noise analysis
| Trigger |
File |
Studio parser |
.PRINT NOISE, GNUPLOT, SPLOT, NOINDEX |
circuit.NOISE.prn |
prn |
.PRINT NOISE FORMAT=CSV |
circuit.NOISE.csv |
csv |
.PRINT NOISE FORMAT=TECPLOT |
circuit.NOISE.dat |
tecplot |
Noise supports neither RAW nor PROBE format.
Transient analysis
| Trigger |
File |
Studio parser |
.PRINT TRAN, GNUPLOT, SPLOT, NOINDEX |
circuit.prn |
prn |
.PRINT TRAN FORMAT=CSV |
circuit.csv |
csv |
.PRINT TRAN FORMAT=RAW (incl. Xyce -a) |
circuit.raw |
raw |
.PRINT TRAN FORMAT=TECPLOT |
circuit.dat |
tecplot |
.PRINT TRAN FORMAT=PROBE |
circuit.csd |
csd |
Homotopy analysis
Requires .OPTIONS NONLIN CONTINUATION=<method>.
| Trigger |
File |
Studio parser |
.PRINT HOMOTOPY, GNUPLOT, SPLOT, NOINDEX |
circuit.HOMOTOPY.prn |
prn |
.PRINT HOMOTOPY FORMAT=CSV |
circuit.HOMOTOPY.csv |
csv |
.PRINT HOMOTOPY FORMAT=TECPLOT |
circuit.HOMOTOPY.dat |
tecplot |
PROBE and RAW are unsupported for homotopy; Xyce falls back to the STD
format with a warning.
Sensitivity analysis
Requires .SENS; transient adjoint sensitivity uses its own print line.
| Trigger |
File |
Studio parser |
.PRINT SENS (TRAN/DC) |
circuit.SENS.prn, circuit.SENS.csv, circuit.SENS.dat |
prn (.prn), csv (.csv), tecplot (.dat) |
.PRINT SENS (AC) |
circuit.FD.SENS.prn, circuit.FD.SENS.csv, circuit.FD.SENS.dat |
prn (.prn), csv (.csv), tecplot (.dat) |
.PRINT TRANADJOINT (+NOINDEX/CSV/TECPLOT) |
circuit.TRADJ.prn, circuit.TRADJ.csv, circuit.TRADJ.dat |
prn (.prn), csv (.csv), tecplot (.dat) |
Embedded sampling analysis
| Trigger |
File |
Studio parser |
.PRINT ES, GNUPLOT, SPLOT, NOINDEX |
circuit.ES.prn |
prn |
.PRINT ES FORMAT=CSV |
circuit.ES.csv |
csv |
.PRINT ES FORMAT=TECPLOT |
circuit.ES.dat |
tecplot |
Intrusive PCE analysis
| Trigger |
File |
Studio parser |
.PRINT PCE, GNUPLOT, SPLOT, NOINDEX |
circuit.PCE.prn |
prn |
.PRINT PCE FORMAT=CSV |
circuit.PCE.csv |
csv |
.PRINT PCE FORMAT=TECPLOT |
circuit.PCE.dat |
tecplot |
Independently of the print format, Xyce always writes two companion
TECPLOT-format files for an intrusive PCE run: circuit_pce.dat ("intrusive
PCE output", per-variable quad PCE statistics) and circuit_pce2.dat
("intrusive PCE output, solution vector coefficients"). Xyce Studio loads
them with the same tecplot parser.
| Format |
Extension |
Supported analyses |
Studio parser |
| STD (default), NOINDEX, GNUPLOT, SPLOT |
.prn |
all |
prn |
| CSV |
.csv |
all |
csv |
| TECPLOT |
.dat |
all |
tecplot |
RAW (incl. Xyce -a) |
.raw |
AC, AC_IC, DC, TRAN |
raw |
| PROBE |
.csd / .TD.csd |
AC, AC_IC, DC, TRAN |
csd |
Additional outputs
Xyce -r <name> [-a] — raw override file with all circuit variables,
regardless of the .PRINT variable lists; parsed by the raw parser.LIN — Touchstone s-parameter output (.s2p); parsed by the
touchstone parser.OP — operating point data in the log file, not a plottable file