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Harmonic balance GMRES Warnnings

Dear All,

I got follwing wrannig while doing PAC with HB analysis.My HB-PSS setting is as below:-

analysis('pss ?engine "Harmonic Balance" ?flexbalance "yes" ?oversamplefactor "2"
       ?fund "2.5G" ?harms "60" ?errpreset "conservative" ?tstab "50n"
       ?oscana t ?p "/V15" ?n "/gnd!" ?oscmethod ""
       ?step "" ?maxstep "0.4p" ?write "" ?writefinal ""
       ?swapfile "" ?checkpss "" ?method "gear2only" ?tstabmethod "gear2only"
       ?relref "alllocal" ?lteratio "10" ?steadyratio "0.00001" ?maxacfreq "200G"
       ?ppv "" ?backtracking "" )

option(   'iabstol "1e-13"
   'vabstol "3e-8"
   'reltol "1e-6"
)

converge( 'ic "/V2" "1.3" )
temp( 27 )

Warning: GMRES did not converge to the desired tolerance of 1e-08. It actually converged to 0.000335882. The solution may not be accurate but it's saved anyway.

Could anybody please tell why this warnning is arising.

Is it safe to ignore ?

Kind Regards,

Andrew Beckett over 11 years ago

Please look at these two solutions - solution 11842556 and solution 11812142.
Kind Regards,
Andrew.
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RFStuff over 11 years ago

Thanks for your reply.
My spectre version is:-
sub-version 12.1.0.402.isr5

Looks like I have to file a SR
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Tawna over 11 years ago

Try downloading the latest MMSIM 12.1.1 version from http://downloads.cadence.com .
If that doesn't fix the issue, then definitely please file a SR.

best regards,
Tawna
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