Idea: in GFC, represent tables as just lists values, without showing the parameters. Concrete syntax: table T [t1 ; ... ; tn] where t1,...,tn are terms. This is treated as equivalent to table {p1 => t1 ; ... ; pn => tn} where p1,...,pn is the canonical listing of patterns of type T. Advantage: reduce the size of GFC files. Disadvantages: you don't get the sharing optimization, e.g. table {A|B => v} instead of table T [v ; v] Moreover, it is slower to select from the table, because one first has to look up the position index of the argument. Usage: when compiling a module, use the -val option: i -val -src Foo.gf Summary of results, testing with lib/resource/french/TestVerbesFre.gf: without -val with -val ratio compilation time 129 s 84 s 65 % time to read back gfcm 109 s 32 s 29 % size of generated gfcm 28 M 9 M 32 % memory use in compilation 376 M 251 M 67 % memory use in reading gfcm 1120 M 524 M 47 % No significant loss in linearization (which needs selection). Conclusion: for the case at hand (which prompted the experiment at the first place), the gain is significant: compilation needs 30 % less resources, and using the compiled grammar needs 50-70 % less. More testing is desirable to find out if -val is always good. At the moment, reuse is not possible with gfc modules created with the -val flag (although it is supported by the GF syntax already). 10/1/2004 Test the generation of course-of-values tables --------------------- Without: i -src TestVerbesFre.gf 129160 msec > gr -cat=V | l -table 650 msec gf +RTS -K10M -s 8,469,778,952 bytes allocated in the heap 2,779,891,252 bytes copied during GC 133,108,856 bytes maximum residency (36 sample(s)) 32295 collections in generation 0 ( 24,25s) 36 collections in generation 1 ( 24,68s) 376 Mb total memory in use INIT time 0,01s ( 0,04s elapsed) MUT time 80,21s (499,76s elapsed) GC time 48,93s ( 50,01s elapsed) EXIT time 0,00s ( 0,00s elapsed) Total time 129,15s (549,81s elapsed) %GC time 37,9% (9,1% elapsed) Alloc rate 105,581,886 bytes per MUT second Productivity 62,1% of total user, 14,6% of total elapsed wc french/*.gfc french/*.gfr 37 2533 44976 french/CategoriesFre.gfc 0 9 62 french/ConjugNancy.gfc 2 29 137 french/MorphoFre.gfc 29 966 7641 french/NumeralsFre.gfc 136 393891 4415193 french/RulesFre.gfc 151 4211 39290 french/StructuralFre.gfc 123 607 3259 french/SyntaxFre.gfc 285 4702 59892 french/TestResourceFre.gfc 6790 27179 184046 french/TestVerbesAbs.gfc 6781 28170 198376 french/TestVerbesFre.gfc 20 214 1245 french/TypesFre.gfc 6494 45458 254878 french/VerbesAbs.gfc 6494 1272600 23438292 french/VerbesFre.gfc 6449 45143 209154 french/Vs.gfc 6278 47836 426316 french/ConjugNancy.gfr 14465 72471 655006 french/MorphoFre.gfr 238250 798560 8973600 french/SyntaxFre.gfr 492 2557 21908 french/TypesFre.gfr 293276 2747136 38933271 total pm | wf test0.gfcm 55660 msec wc test0.gfcm 28041 1784674 28669416 test0.gfcm > i test0.gfcm + reading test0.gfcm 103290 msec 109450 msec 1120 Mb total memory in use ---------------------- After: i -src -val TestVerbesFre.gf 84650 msec gr -cat=V | l -table 390 msec gf +RTS -K10M -s 6,061,907,436 bytes allocated in the heap 1,576,739,488 bytes copied during GC 92,700,188 bytes maximum residency (32 sample(s)) 23109 collections in generation 0 ( 13,98s) 32 collections in generation 1 ( 12,02s) 251 Mb total memory in use INIT time 0,01s ( 0,00s elapsed) MUT time 59,28s (122,35s elapsed) GC time 26,00s ( 26,91s elapsed) EXIT time 0,00s ( 0,00s elapsed) Total time 85,29s (149,26s elapsed) %GC time 30,5% (18,0% elapsed) Alloc rate 102,241,650 bytes per MUT second Productivity 69,5% of total user, 39,7% of total elapsed wc french/*.gfc french/*.gfr 37 3894 13600 french/CategoriesFre.gfc 0 9 62 french/ConjugNancy.gfc 2 29 137 french/MorphoFre.gfc 29 938 5726 french/NumeralsFre.gfc 136 354450 3097901 french/RulesFre.gfc 151 3738 22354 french/StructuralFre.gfc 123 607 3259 french/SyntaxFre.gfc 285 2437 18664 french/TestResourceFre.gfc 6790 27179 184046 french/TestVerbesAbs.gfc 6781 27694 191696 french/TestVerbesFre.gfc 20 214 1245 french/TypesFre.gfc 6494 45458 254878 french/VerbesAbs.gfc 6494 442149 5078881 french/VerbesFre.gfc 6449 45143 209154 french/Vs.gfc 6278 47836 426316 french/ConjugNancy.gfr 14465 72471 655006 french/MorphoFre.gfr 238250 798560 8973600 french/SyntaxFre.gfr 492 2557 21908 french/TypesFre.gfr 293276 1875363 19158433 total pm | wf test1.gfcm 13030 msec wc test1.gfcm 28041 912901 8894578 test1.gfcm > i test1.gfcm + reading test1.gfcm 24220 msec 32720 msec 524 Mb total memory in use