a program for geometry (volume...),VF6.6, in Debug model,it's ok, but in release model, the subroution program for volume error: access violation. what's the problem? And how to do?

give more detail, it is better to add code below your message (if you use external library address it too)

ok, pseudocode:

modeul define values define allocatable all array end modeul

program main use modeul call read_parameter allocate all array call read_grid

.

.

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call calculation_volume (Error occur)

call calculation_fxyz

call output

end program

as error is encountered in "call calculation_volume (Error occur)" so u must fucos on it and test it separately, so i advice to exclude other part from code and compile code. In better way, if you send to me your project workspace (you can exclude other part) i try it and can help u in better manner as possible. my contacteterpendum@yahoo.com (if u send to my mail notify in cfd-online)

thanks，i have get it.