[MITgcm-devel] negative diagnostics freq

[samar khatiwala]

While on the subject of output timestep frequency, I've been having
some trouble doing a pickup with a different timestep. More specifically,
the pickup takes place but the output frequencies (dump and perm
checkpoints) are all screwed up. As usual, I could be doing something
totally stupid.

In particular, I do a long spinup with a time step deltaTClock=43200. A
pickup is written at iter 1080000. Now I change deltaTClock to 1200, set
nIter0=1080000
nTimeSteps = 388800
pChkptFreq= 466560000.,
dumpFreq=   155520000.,

I expect to see dumps every 5 years and a checkpoint at 15 years (length
of the run). But instead I get dumps and checkpoints at some odd
frequency. Looking at ini_params.F I can sort of see how changing
deltaTClock can mess things up (especially if the new time step is not a
multiple of the old timestep). The solution seems to be to rename the
pickup files and set pickupSuff, but is there a simpler/cleaner solution
that anyone can suggest? Perhaps some combination of setting startTime,
baseTime, etc.

Thanks, Samar