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Analysis rollup Calc Failed - but backfill and evaluate working fine

Question asked by Chris.Skerratt on Feb 8, 2017
Latest reply on Feb 16, 2017 by Chris.Skerratt

So, here's some background.


I have a model for calculating air and flue gas enthalpy into and out of gas turbines in both our test area and production AF servers. its does this by a rollup analysis to sum child elements fractional mass (its molecular mass * its vol%). My issue is that this rollup doesn't work in the production environment but it does in the test environment for the outlet flue gas.  In production clicking the evaluate button returns the correct value, even backfilling the rollup works and if I refresh the elements view the result returns the correct number (after a backfill) until the analysis runs again - it's set to run every 5 minutes, and then returns to being 'Calc Failed'


Furthermore the inlet air works fine in both AF servers and runs periodically without any error.


here's the elements for the exhaust

and the inlet

and the analysis



does anyone have any ideas