Merging burned-in chains

Question

Merging burned-in chains

Closed this issue 3 years ago · 2 comments

There doesn't seem to be an "easy" way (that I'm aware of) to take burned in instrument files from one experiment that was running independently and merge them together. It would be nice to do that since it takes a while for WMAP to burn in by itself.

Of course, if this functionality already exists, I retract the issue.

Answer 1 · 2021-09-07T15:05:07.000Z

Not sure what you mean by "burned in instrument files". Instrument files aren't updated, but only contain static information. But if you're talking about the instrument parameters from different chain files then you can specify the chain file for each frequency band, at least. That's what I usually do during burn-in: Run separately one chain per band, fixing the signal model, and then merge things together using separate init chain files for each channel. Hans Kristian ⁣Få BlueMail for Android 7. sep. 2021, 15:31 kl. 15:31 skrev Duncan Watts ***@***.***>:

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There doesn't seem to be an "easy" way (that I'm aware of) to take burned in instrument files from one experiment that was running independently and merge them together. It would be nice to do that since it takes a while for WMAP to burn in by itself. Of course, if this functionality already exists, I retract the issue. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: #88

Answer 2 · 2021-09-10T09:19:46.000Z

I see, I misunderstood the INIT_INSTRUMENT_FROM_HDF parameter, I was just used to the "default" and "none" options, but of course you can specify the hdf from a previously burned in set of instrument parameters. Example: INIT_INSTRUMENT_FROM_HDF = /mn/stornext/d16/cmbco/bp/dwatts/WMAP/backup.h5:6

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On Tue, Sep 7, 2021 at 5:05 PM Hans Kristian Eriksen < ***@***.***> wrote: Not sure what you mean by "burned in instrument files". Instrument files aren't updated, but only contain static information. But if you're talking about the instrument parameters from different chain files then you can specify the chain file for each frequency band, at least. That's what I usually do during burn-in: Run separately one chain per band, fixing the signal model, and then merge things together using separate init chain files for each channel. Hans Kristian ⁣Få BlueMail for Android 7. sep. 2021, 15:31 kl. 15:31 skrev Duncan Watts ***@***.***>: >There doesn't seem to be an "easy" way (that I'm aware of) to take >burned in instrument files from one experiment that was running >independently and merge them together. It would be nice to do that >since it takes a while for WMAP to burn in by itself. > >Of course, if this functionality already exists, I retract the issue. > >-- >You are receiving this because you are subscribed to this thread. >Reply to this email directly or view it on GitHub: >#88 — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#88 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABRNSOJ3QXL535ENS6BQHQLUAYS23ANCNFSM5DSM6GYA> .