| Compiling file with many functions: huge performance difference between IDL and IDLDE [message #38531] |
Wed, 17 March 2004 01:47  |
Sidney Cadot
Messages: 7
Registered: October 2002
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Junior Member |
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Hi all,
For a system we're making, a rather big IDL file is generated containing
well over 12,000 function definitions, accompanied by a selector
function (see below for a rationale).
What we're seeing is that in command-line IDL, this works like a charm:
compilation of the file takes about 4--5 seconds on a reasonably fast
machine, which is acceptable.
However, when this file is compiled from within IDLDE, this takes well
over three minutes-- rougly a factor 60 increase(!)
Does anybody know what causes this, and perhaps a solution?
We tried pre-compiling the functions using a SAV file; this yields a
significant increase both in IDL (cmd line version): 3 sec, and IDLDE
(used time down to 87 seconds), but the relative difference is still
quite puzzling.
Best regards,
Sidney Cadot
Science and Technology Corp., The Netherlands
P.S. the reason we're doing this is that we need to implement a
string-based map with optiomal performance, like this:
FUNCTION f_tom
RETURN, 123
END
FUNCTION f_dick
RETURN, 456
END
FUNCTION f_harry
RETURN, 789
END
FUNCTION f, name
CATCH, error_status
IF error_status EQ 0 THEN RETURN, -1
RETURN, call_function("f_" + name)
END
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