Profiling results ----------------- Total cpu time observed: 135242ms (out of 138748ms) Number of samples taken: 340 (once every 398ms) (Hiding functions with self<1.0% and local<2.0%: 2 of 108 hidden) ============================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ============================================================================== ??? [21] 100.0% [1] 135242(100.0%) 0(0.0%) profile-thunk16 ...e/pkgs/profile-lib/main.rkt:9:0 run [11] 100.0% ------------------------------------------------------------------------------ ??? [21] 100.0% [2] 41150(30.4%) 0(0.0%) run-improve39 ...ie/develop/src/mainloop.rkt:287:0 for-loop [12] 86.3% setup-prog!32 [14] 12.1% for-loop [17] 1.6% ------------------------------------------------------------------------------ map-enodes [36] 1.0% loop [47] 99.0% [3] 33352(24.7%) 0(0.0%) set-precompute! ...lop/src/core/simplify.rkt:140:0 for-loop [13] 100.0% ------------------------------------------------------------------------------ hash-ref! [53] 100.0% [4] 4902(3.6%) 324(0.2%) ??? ...tlies/herbie/develop/src/programs.rkt:153:5 loop [47] 93.4% ------------------------------------------------------------------------------ for-loop [100] 48.5% loop [95] 51.5% [5] 1286(1.0%) 0(0.0%) syntax-e (unknown source) syntax-e/no-taint [15] 100.0% ------------------------------------------------------------------------------ loop [95] 100.0% [6] 662(0.5%) 0(0.0%) dispatch-transformer41 (unknown source) apply-transformer52 [16] 100.0% ------------------------------------------------------------------------------ hash-ref! [53] 100.0% [7] 644(0.5%) 0(0.0%) parse-loop14 ...s/racket/match/compiler.rkt:418:15 loop [47] 84.0% loop [20] 16.0% ------------------------------------------------------------------------------ hash-ref! [53] 100.0% [8] 644(0.5%) 0(0.0%) f8 ...et/collects/racket/match/compiler.rkt:507:40 map [25] 100.0% ------------------------------------------------------------------------------ for-loop [100] 100.0% [9] 386(0.3%) 0(0.0%) expand-implicit (unknown source) resolve+shift28 [18] 100.0% ------------------------------------------------------------------------------ ??? [21] 100.0% [10] 336(0.2%) 0(0.0%) oracle-error ...erbie/develop/src/points.rkt:227:0 for-loop [19] 100.0% ------------------------------------------------------------------------------ profile-thunk16 [1] 100.0% [11] 135242(100.0%) 0(0.0%) run ...racket/share/pkgs/profile-lib/main.rkt:39:2 ??? [21] 100.0% ------------------------------------------------------------------------------ run-improve39 [2] 100.0% [12] 35512(26.3%) 0(0.0%) for-loop ...herbie/develop/src/mainloop.rkt:298:19 ??? [22] 100.0% ------------------------------------------------------------------------------ set-precompute! [3] 100.0% [13] 33352(24.7%) 640(0.5%) for-loop ...ie/develop/src/core/simplify.rkt:142:2 update-leader! [58] 47.1% reduce-to-new! [23] 44.3% eval-const-expr [24] 6.7% ------------------------------------------------------------------------------ run-improve39 [2] 100.0% [14] 4994(3.7%) 0(0.0%) setup-prog!32 ...bie/develop/src/mainloop.rkt:63:0 loop [29] 100.0% ------------------------------------------------------------------------------ syntax-e [5] 100.0% [15] 1286(1.0%) 0(0.0%) syntax-e/no-taint (unknown source) loop [95] 100.0% ------------------------------------------------------------------------------ dispatch-transformer41 [6] 100.0% [16] 662(0.5%) 0(0.0%) apply-transformer52 (unknown source) apply-transformer-in-context [28] 50.8% loop [95] 49.2% ------------------------------------------------------------------------------ run-improve39 [2] 100.0% [17] 644(0.5%) 0(0.0%) for-loop ...herbie/develop/src/mainloop.rkt:304:10 run-iter! [26] 100.0% ------------------------------------------------------------------------------ expand-implicit [9] 100.0% [18] 386(0.3%) 0(0.0%) resolve+shift28 (unknown source) fallback-loop [27] 100.0% ------------------------------------------------------------------------------ oracle-error [10] 100.0% [19] 336(0.2%) 0(0.0%) for-loop ...es/herbie/develop/src/points.rkt:228:2 map [25] 100.0% ------------------------------------------------------------------------------ parse-loop14 [7] 1.6% loop [20] 98.4% [20] 310(0.2%) 310(0.2%) loop ...cket/collects/racket/private/map.rkt:54:19 loop [20] 98.4% ------------------------------------------------------------------------------ run [11] 50.0% [21] 135242(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk16 [1] 50.0% loop [29] 34.5% run-improve39 [2] 15.2% oracle-error [10] 0.1% eval-errors [34] 0.1% ------------------------------------------------------------------------------ for-loop [12] 100.0% [22] 35512(26.3%) 0(0.0%) ??? ...s/herbie/develop/src/core/simplify.rkt:31:0 iterate-egraph!7 [30] 100.0% ------------------------------------------------------------------------------ for-loop [13] 100.0% [23] 14788(10.9%) 0(0.0%) reduce-to-new! ...evelop/src/core/egraph.rkt:337:0 merge-egraph-nodes! [52] 98.0% hash-update! [79] 2.0% ------------------------------------------------------------------------------ for-loop [13] 100.0% [24] 2218(1.6%) 0(0.0%) eval-const-expr .../develop/src/programs.rkt:132:0 eval-prog [48] 100.0% ------------------------------------------------------------------------------ for-loop [19] 34.3% f8 [8] 65.7% [25] 980(0.7%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:35:13 hash-ref! [53] 65.7% ??? [32] 34.3% ------------------------------------------------------------------------------ for-loop [17] 100.0% [26] 644(0.5%) 0(0.0%) run-iter! ...herbie/develop/src/mainloop.rkt:268:0 localize-error [31] 100.0% ------------------------------------------------------------------------------ resolve+shift28 [18] 100.0% [27] 386(0.3%) 0(0.0%) fallback-loop (unknown source) for-loop [100] 100.0% ------------------------------------------------------------------------------ apply-transformer52 [16] 100.0% [28] 336(0.2%) 0(0.0%) apply-transformer-in-context (unknown source) ??? [33] 100.0% ------------------------------------------------------------------------------ setup-prog!32 [14] 5.1% ??? [21] 94.9% [29] 98446(72.8%) 0(0.0%) loop ...htlies/herbie/develop/src/points.rkt:167:2 loop [41] 60.8% loop [35] 36.0% make-exacts [38] 1.9% make-exacts* [42] 1.4% ------------------------------------------------------------------------------ ??? [22] 100.0% [30] 35512(26.3%) 0(0.0%) iterate-egraph!7 ...lop/src/core/simplify.rkt:55:0 map-enodes [36] 93.9% one-iter [37] 6.1% ------------------------------------------------------------------------------ run-iter! [26] 100.0% [31] 644(0.5%) 0(0.0%) localize-error ...velop/src/core/localize.rkt:51:0 hash-ref! [53] 100.0% ------------------------------------------------------------------------------ map [25] 100.0% [32] 336(0.2%) 336(0.2%) ??? ...htlies/herbie/develop/src/points.rkt:229:26 ------------------------------------------------------------------------------ apply-transformer-in-context [28] 100.0% [33] 336(0.2%) 0(0.0%) ??? ...collects/racket/private/qq-and-or.rkt:155:9 ??? [39] 100.0% ------------------------------------------------------------------------------ ??? [21] 100.0% [34] 304(0.2%) 0(0.0%) eval-errors ...herbie/develop/src/points.rkt:208:0 for-loop [40] 100.0% ------------------------------------------------------------------------------ loop [29] 100.0% [35] 35440(26.2%) 0(0.0%) loop ...htlies/herbie/develop/src/points.rkt:125:2 loop [41] 58.6% make-exacts* [42] 35.4% eval-prog [48] 6.0% ------------------------------------------------------------------------------ iterate-egraph!7 [30] 100.0% [36] 33352(24.7%) 0(0.0%) map-enodes ...ie/develop/src/core/egraph.rkt:140:0 loop [47] 99.0% set-precompute! [3] 1.0% ------------------------------------------------------------------------------ iterate-egraph!7 [30] 100.0% [37] 2160(1.6%) 0(0.0%) one-iter ...bie/develop/src/core/simplify.rkt:66:0 for-loop [43] 86.1% for-loop [46] 13.9% ------------------------------------------------------------------------------ loop [29] 100.0% [38] 1822(1.3%) 0(0.0%) make-exacts ...herbie/develop/src/points.rkt:123:0 make-exacts* [42] 84.4% loop [41] 15.6% ------------------------------------------------------------------------------ ??? [33] 100.0% [39] 336(0.2%) 0(0.0%) ??? ...ollects/racket/private/qq-and-or.rkt:164:21 syntax->list [44] 100.0% ------------------------------------------------------------------------------ eval-errors [34] 100.0% [40] 304(0.2%) 0(0.0%) for-loop ...es/herbie/develop/src/points.rkt:210:2 ulp-difference [45] 100.0% ------------------------------------------------------------------------------ make-exacts [38] 0.4% loop [35] 25.7% loop [29] 74.0% [41] 80866(59.8%) 0(0.0%) loop ...htlies/herbie/develop/src/points.rkt:108:4 loop [47] 99.1% ??? [51] 0.4% ------------------------------------------------------------------------------ loop [29] 8.9% make-exacts [38] 10.0% loop [35] 81.2% [42] 15452(11.4%) 0(0.0%) make-exacts* ...erbie/develop/src/points.rkt:105:0 loop [47] 75.6% eval-prog [48] 24.4% ------------------------------------------------------------------------------ one-iter [37] 100.0% [43] 1860(1.4%) 0(0.0%) for-loop ...ie/develop/src/core/simplify.rkt:113:2 for-loop [49] 49.5% update-leader! [58] 33.7% match-e [50] 16.9% ------------------------------------------------------------------------------ ??? [39] 100.0% [44] 336(0.2%) 0(0.0%) syntax->list (unknown source) loop [95] 100.0% ------------------------------------------------------------------------------ for-loop [40] 100.0% [45] 304(0.2%) 0(0.0%) ulp-difference ...erbie/develop/src/float.rkt:19:0 ??? [93] 100.0% ------------------------------------------------------------------------------ for-loop [46] 50.0% one-iter [37] 50.0% [46] 300(0.2%) 0(0.0%) for-loop ...ie/develop/src/core/simplify.rkt:76:12 for-loop [46] 50.0% match-e [50] 50.0% ------------------------------------------------------------------------------ make-exacts* [42] 0.1% map-enodes [36] 0.4% parse-loop14 [7] 0.5% loop [41] 0.5% ??? [4] 3.5% loop [47] 94.9% [47] 130018(96.1%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:40:19 loop [47] 94.9% hash-ref! [53] 4.0% ??? [51] 0.7% set-precompute! [3] 0.4% ??? [55] 0.0% ------------------------------------------------------------------------------ loop [35] 26.2% eval-const-expr [24] 27.3% make-exacts* [42] 46.4% [48] 8114(6.0%) 0(0.0%) eval-prog ...herbie/develop/src/programs.rkt:109:0 hash-ref! [53] 64.1% temp68_2 [54] 35.9% ------------------------------------------------------------------------------ for-loop [43] 100.0% [49] 920(0.7%) 0(0.0%) for-loop ...bie/develop/src/core/simplify.rkt:98:4 merge-egraph-nodes! [52] 100.0% ------------------------------------------------------------------------------ for-loop [63] 25.6% for-loop [43] 25.6% for-loop [46] 48.9% [50] 614(0.5%) 300(0.2%) match-e ...herbie/develop/src/core/ematch.rkt:46:0 for-loop [56] 51.1% ------------------------------------------------------------------------------ loop [41] 0.4% loop [47] 99.6% [51] 90038(66.6%) 0(0.0%) ??? ...tlies/herbie/develop/src/programs.rkt:129:2 ??? [57] 100.0% ------------------------------------------------------------------------------ for-loop [49] 6.0% reduce-to-new! [23] 93.0% [52] 15406(11.4%) 326(0.2%) merge-egraph-nodes! ...p/src/core/egraph.rkt:153:0 update-leader! [58] 97.9% ------------------------------------------------------------------------------ map [25] 2.3% localize-error [31] 2.3% eval-prog [48] 25.4% loop [47] 70.0% [53] 5844(4.3%) 0(0.0%) hash-ref! .../racket/private/more-scheme.rkt:376:2 ??? [4] 69.1% bigfloat-hash [59] 19.9% parse-loop14 [7] 7.8% f8 [8] 2.3% ??? [62] 1.0% ------------------------------------------------------------------------------ eval-prog [48] 100.0% [54] 2914(2.2%) 0(0.0%) temp68_2 (unknown source) compile16 [60] 100.0% ------------------------------------------------------------------------------ loop [47] 100.0% [55] 2076(1.5%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:357:33 ->flonum [61] 100.0% ------------------------------------------------------------------------------ match-e [50] 100.0% [56] 314(0.2%) 314(0.2%) for-loop ...rbie/develop/src/core/ematch.rkt:59:11 for-loop [63] 50.0% ------------------------------------------------------------------------------ ??? [51] 100.0% [57] 90038(66.6%) 344(0.3%) ??? ...acket/collects/racket/private/kw.rkt:592:14 ??? [64] 99.6% ------------------------------------------------------------------------------ for-loop [43] 2.0% merge-egraph-nodes! [52] 48.0% for-loop [13] 50.0% [58] 31412(23.2%) 0(0.0%) update-leader! ...evelop/src/core/egraph.rkt:218:0 for-loop [65] 100.0% ------------------------------------------------------------------------------ hash-ref! [53] 100.0% [59] 4876(3.6%) 298(0.2%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:167:0 bfcanonicalize [67] 59.2% sig+exp->bigfloat [68] 34.7% ------------------------------------------------------------------------------ temp68_2 [54] 100.0% [60] 2914(2.2%) 0(0.0%) compile16 (unknown source) temp74_0 [66] 100.0% ------------------------------------------------------------------------------ ??? [55] 100.0% [61] 2076(1.5%) 1698(1.3%) ->flonum ...s/herbie/develop/src/programs.rkt:36:0 return/no-unsupplied [69] 18.2% ------------------------------------------------------------------------------ hash-ref! [53] 100.0% [62] 334(0.2%) 0(0.0%) ??? .../herbie/develop/src/core/localize.rkt:22:13 repeat [70] 100.0% ------------------------------------------------------------------------------ for-loop [56] 100.0% [63] 314(0.2%) 0(0.0%) for-loop ...rbie/develop/src/core/ematch.rkt:65:37 match-e [50] 100.0% ------------------------------------------------------------------------------ ??? [57] 100.0% [64] 89694(66.3%) 312(0.2%) ??? ...tract/private/arrow-higher-order.rkt:361:33 bf-complex-mult [71] 88.4% bf-complex-add [73] 11.2% ------------------------------------------------------------------------------ update-leader! [58] 100.0% [65] 31412(23.2%) 0(0.0%) for-loop ...rbie/develop/src/core/egraph.rkt:223:6 for-loop [72] 100.0% ------------------------------------------------------------------------------ compile16 [60] 100.0% [66] 2914(2.2%) 0(0.0%) temp74_0 (unknown source) expand-single [74] 78.8% compile-top9 [75] 21.2% ------------------------------------------------------------------------------ bigfloat-hash [59] 100.0% [67] 2888(2.1%) 2888(2.1%) bfcanonicalize .../private/bigfloat/mpfr.rkt:157:0 ------------------------------------------------------------------------------ bigfloat-hash [59] 100.0% [68] 1690(1.2%) 0(0.0%) sig+exp->bigfloat ...ivate/bigfloat/mpfr.rkt:387:0 new-mpfr [97] 63.1% ??? [98] 19.6% integer->mpz [77] 17.3% ------------------------------------------------------------------------------ ->flonum [61] 100.0% [69] 378(0.3%) 378(0.3%) return/no-unsupplied ...ct/private/arr-i.rkt:534:0 ------------------------------------------------------------------------------ ??? [62] 100.0% [70] 334(0.2%) 0(0.0%) repeat ...erbie/develop/src/core/localize.rkt:13:0 make-sequence [76] 100.0% ------------------------------------------------------------------------------ ??? [64] 100.0% [71] 79310(58.6%) 3082(2.3%) bf-complex-mult ...develop/src/bigcomplex.rkt:31:0 ??? [85] 49.1% bf* [78] 40.3% ...higher-order.rkt:361:33 [80] 6.8% ------------------------------------------------------------------------------ for-loop [65] 100.0% [72] 31412(23.2%) 330(0.2%) for-loop ...rbie/develop/src/core/egraph.rkt:224:8 hash-update! [79] 98.9% ------------------------------------------------------------------------------ ??? [64] 100.0% [73] 10072(7.4%) 750(0.6%) bf-complex-add .../develop/src/bigcomplex.rkt:24:0 ??? [85] 89.2% ...higher-order.rkt:361:33 [80] 3.3% ------------------------------------------------------------------------------ temp74_0 [66] 100.0% [74] 2296(1.7%) 0(0.0%) expand-single (unknown source) expand-capturing-lifts [81] 100.0% ------------------------------------------------------------------------------ temp74_0 [66] 100.0% [75] 618(0.5%) 0(0.0%) compile-top9 (unknown source) compile-forms31 [83] 50.2% extract-namespace-scopes/values [84] 49.8% ------------------------------------------------------------------------------ repeat [70] 100.0% [76] 334(0.2%) 0(0.0%) make-sequence ...ects/racket/private/for.rkt:528:2 ??? [82] 100.0% ------------------------------------------------------------------------------ sig+exp->bigfloat [68] 100.0% [77] 292(0.2%) 292(0.2%) integer->mpz ...math/private/bigfloat/gmp.rkt:87:0 ------------------------------------------------------------------------------ bf-complex-mult [71] 100.0% [78] 31948(23.6%) 840(0.6%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [85] 97.4% ------------------------------------------------------------------------------ reduce-to-new! [23] 1.0% for-loop [72] 99.0% [79] 31384(23.2%) 322(0.2%) hash-update! ...cket/private/more-scheme.rkt:365:4 ??? [86] 98.0% ??? [89] 1.0% ------------------------------------------------------------------------------ bf-complex-add [73] 5.9% bf-complex-mult [71] 94.1% [80] 5690(4.2%) 384(0.3%) ...higher-order.rkt:361:33 (unknown source) ??? [87] 93.3% ------------------------------------------------------------------------------ expand-single [74] 100.0% [81] 2296(1.7%) 0(0.0%) expand-capturing-lifts (unknown source) lambda-clause-expander [88] 100.0% ------------------------------------------------------------------------------ make-sequence [76] 100.0% [82] 334(0.2%) 334(0.2%) ??? ...cket/collects/racket/private/for.rkt:1203:9 ------------------------------------------------------------------------------ compile-top9 [75] 100.0% [83] 310(0.2%) 310(0.2%) compile-forms31 (unknown source) ------------------------------------------------------------------------------ compile-top9 [75] 100.0% [84] 308(0.2%) 308(0.2%) extract-namespace-scopes/values (unknown source) ------------------------------------------------------------------------------ bf-complex-add [73] 11.4% bf* [78] 39.4% bf-complex-mult [71] 49.3% [85] 79020(58.4%) 5642(4.2%) ??? ...-racket/utils/simple-result-arrow.rkt:39:12 bfadd [90] 73.8% bfneg [92] 19.1% ------------------------------------------------------------------------------ hash-update! [79] 100.0% [86] 30760(22.7%) 0(0.0%) ??? ...s/herbie/develop/src/core/egraph.rkt:226:24 for-loop [91] 100.0% ------------------------------------------------------------------------------ ...higher-order.rkt:361:33 [80] 100.0% [87] 5306(3.9%) 3436(2.5%) ??? ...cts/racket/contract/private/list.rkt:209:10 ??? [93] 35.2% ------------------------------------------------------------------------------ expand-capturing-lifts [81] 100.0% [88] 2296(1.7%) 0(0.0%) lambda-clause-expander (unknown source) finish-bodys [94] 71.2% loop [95] 28.8% ------------------------------------------------------------------------------ hash-update! [79] 100.0% [89] 302(0.2%) 0(0.0%) ??? ...s/herbie/develop/src/core/egraph.rkt:349:16 for-loop [96] 100.0% ------------------------------------------------------------------------------ ??? [85] 100.0% [90] 58314(43.1%) 2816(2.1%) bfadd ...-lib/math/private/bigfloat/mpfr.rkt:821:4 new-mpfr [97] 66.1% ??? [98] 29.1% ------------------------------------------------------------------------------ ??? [86] 100.0% [91] 30760(22.7%) 25332(18.7%) for-loop ...bie/develop/src/core/egraph.rkt:227:26 update-en-expr [99] 17.6% ------------------------------------------------------------------------------ ??? [85] 100.0% [92] 15064(11.1%) 336(0.2%) bfneg ...-lib/math/private/bigfloat/mpfr.rkt:618:4 new-mpfr [97] 67.4% ??? [98] 30.4% ------------------------------------------------------------------------------ ulp-difference [45] 14.0% ??? [87] 86.0% [93] 2174(1.6%) 2174(1.6%) ??? ...ects/racket/contract/private/guts.rkt:746:8 ------------------------------------------------------------------------------ lambda-clause-expander [88] 39.4% for-loop [100] 60.6% [94] 1634(1.2%) 0(0.0%) finish-bodys (unknown source) for-loop [100] 100.0% ------------------------------------------------------------------------------ loop [95] 6.3% apply-transformer52 [16] 6.3% syntax->list [44] 8.7% lambda-clause-expander [88] 15.0% syntax-e/no-taint [15] 63.6% [95] 1286(1.0%) 0(0.0%) loop (unknown source) gf [101] 63.6% dispatch-transformer41 [6] 15.0% syntax-e [5] 15.0% loop [95] 6.3% ------------------------------------------------------------------------------ ??? [89] 100.0% [96] 302(0.2%) 302(0.2%) for-loop ...bie/develop/src/core/egraph.rkt:350:18 ------------------------------------------------------------------------------ sig+exp->bigfloat [68] 2.1% bfneg [92] 20.4% bfadd [90] 77.5% [97] 49762(36.8%) 49762(36.8%) new-mpfr ...b/math/private/bigfloat/mpfr.rkt:335:0 ------------------------------------------------------------------------------ sig+exp->bigfloat [68] 1.5% bfneg [92] 20.9% bfadd [90] 77.6% [98] 21862(16.2%) 21862(16.2%) ??? /home/p92/racket/collects/ffi/unsafe.rkt:898:4 ------------------------------------------------------------------------------ for-loop [91] 100.0% [99] 5428(4.0%) 1674(1.2%) update-en-expr ...evelop/src/core/egraph.rkt:212:0 for-loop [102] 69.2% ------------------------------------------------------------------------------ fallback-loop [27] 0.6% for-loop [100] 0.6% finish-bodys [94] 98.7% [100] 1634(1.2%) 696(0.5%) for-loop (unknown source) finish-bodys [94] 59.4% syntax-e [5] 10.2% check-no-duplicate-ids7 [105] 9.6% for-loop [100] 0.6% expand-implicit [9] 0.6% ------------------------------------------------------------------------------ loop [95] 100.0% [101] 1286(1.0%) 336(0.2%) gf (unknown source) cache-or-reuse-hash [103] 25.3% propagation-apply-shifted [104] 24.4% propagation-apply [106] 24.1% ------------------------------------------------------------------------------ update-en-expr [99] 100.0% [102] 3754(2.8%) 3754(2.8%) for-loop ...rbie/develop/src/core/egraph.rkt:214:6 ------------------------------------------------------------------------------ gf [101] 100.0% [103] 326(0.2%) 326(0.2%) cache-or-reuse-hash (unknown source) ------------------------------------------------------------------------------ gf [101] 100.0% [104] 314(0.2%) 314(0.2%) propagation-apply-shifted (unknown source) ------------------------------------------------------------------------------ for-loop [100] 100.0% [105] 314(0.2%) 314(0.2%) check-no-duplicate-ids7 (unknown source) ------------------------------------------------------------------------------ gf [101] 100.0% [106] 310(0.2%) 310(0.2%) propagation-apply (unknown source) ------------------------------------------------------------------------------