Bug 131340 - calc: while parallelized computing (openCL and 'threaded') is still buggy reg. autocalculate: mark it as experimental and switch default 'off' for new versions
Summary: calc: while parallelized computing (openCL and 'threaded') is still buggy reg...
Status: RESOLVED DUPLICATE of bug 132451
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Calc (show other bugs)
(earliest affected)
Hardware: All All
: medium normal
Assignee: Not Assigned
Depends on:
Reported: 2020-03-14 19:29 UTC by b.
Modified: 2020-07-30 04:11 UTC (History)
3 users (show)

See Also:
Crash report or crash signature:


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Description b. 2020-03-14 19:29:19 UTC
the headline say's it all, imho a feature with known bugs shouldn't be on by default, and users should be informed about the risk when activating it. 

it affects e.g. bugs 124577 and 129753, stacks of 100+ cells sometimes produce wrong results on copies into the second cell from top. 

there are others like 98009 and 103532 up to now only 'solved wfm'. 

Steps to Reproduce:
1. check above mentioned bugs, 
2. see errors occuring with any parallelizing option enabled, 
3. see errors need recalculation, 
4. see errors re-occuring on sensitive actions after recalc, 
5. see errors hard to spot for normal users, 
6. i suggest to protect users from running the risk of such miscalculations without warning

Actual Results:
wrong results until manually triggered recalc, 

Expected Results:
correct results, autocalculate working as announced, 

Reproducible: Always

User Profile Reset: No

Additional Info:
Version: (x64)
Build ID: 9ed75e2c65544b4f71c73e1c51a68d74e31d544b
CPU threads: 8; OS: Windows 6.1 Service Pack 1 Build 7601; UI render: Skia/Raster; VCL: win; 
Locale: de-DE (de_DE); UI-Language: en-US
Calc: CL
Comment 1 b. 2020-05-18 18:41:31 UTC
still a bug in, 

easy check: 

threaded or openCL or both enabled and active (restarted), 

A2: '=C1'
B2: '=A2+1' 
C2: '=B2'
A2:C2 - copy 
A3:A101 - paste (minimum length to get 100 identical formulas)
copy any of A2 or A4:A101 to A3
see B3, C3 and A4:C101 wrong

ctrl-shift-F9 heals but user doesn't know that it's neccessary, 

as you see: not reliable, shouldn't be on by defult for productive systems, 

(same error for copies from B2;B4:B101 to B3 or from C2;C4:C101 to C3)
Comment 2 Luboš Luňák 2020-07-29 11:38:32 UTC

*** This bug has been marked as a duplicate of bug 132451 ***