Experimental Physics and
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Dear Olivier, I'm not getting into the "current" vs. "stable" discussion - that depends so much on your personal definition of these two terms that I can only lose. Let me answer it from a different angle.
Such a migration will be an effort. No rocket science, for sure, but a lot of tedious small changes and testing, testing, testing. I would not do that more often than necessary. Most of the changes in EPICS 7 are in the new parts: the pvAccess protocol stack and its integration in the IOC. As long as you don't heavily rely on the pvAccess protocol, the migration risk is pretty low. The EPICS Process Database code is robust and gets new features carefully in a backward-compatible manner, as always. Channel Access and its wide compatibility range will be the glue that keeps your system together. Migrating one system, even one IOC at a time should not be a big issue. Bottom line... Don't underestimate the task. You would need good reasons to not go to a recent 7.0 release. If I remember correctly, an audience poll at one of the last meetings showed that roughly half of the installations have EPICS 7 running somewhere. Can't be completely broken, then. Cheers, ~Ralph
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ANJ, 16 Feb 2021 |
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