eldo_user

Analyzing Simulation Results
Locating Eldo Messages
NUMTTP Number of steps accepted by the simulator and sent to the binary output (.wdb) file
NUMRTP Number of steps rejected due to the truncation error being too large
LTERTP Number of time steps rejected due to LTE
INWCALL Total number of iterations or Newton calls needed to solve the Newton blocks
ITERNW Total number of Newton calls for .OP, .DC and .AC analyses; average number of
Newton calls needed to achieve convergence for a .TRAN analysis
MEMSIZE Memory size allocated to the circuit by Eldo
NDEVCALL Number of device calls
NKIRCH Number of calls or iterations needed to solve Kirchoff’s Law (OSR only)
NMAXCALL Maximum number of calls needed to solve a time or DC point
ITERM Average number of OSR loops
LATENCY Percentage of latency in the circuit
Related Topics
Interpreting the Output Log (.chi) File
Speed and Accuracy
Locating Eldo Messages
Error, warning, and information messages are not all grouped together in the same place inside
the output log file (.chi) so sometimes they can be difficult to locate.
Invoke Eldo with the -ovstatus command-line argument to generate in the standard output
(stdout) a summary message at the end of simulation informing of any warnings and errors, for
example:
Simulation finished.
There are 3 parsing warning(s).
There are 1 simulation error(s).
including %ld simulation non-convergence error(s).
The first line indicates the simulation has finished and the output file transcript is complete,
with or without errors and warnings. The second line indicates the number of parsing errors or
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Eldo® User's Manual, 15.3