Profiling results ----------------- Total cpu time observed: 14290ms (out of 14584ms) Number of samples taken: 65 (once every 220ms) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [37] 100.0% [1] 14068(98.4%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [9] 100.0% ----------------------------------------------------------------------- ??? [37] 100.0% [2] 11500(80.5%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [10] 75.3% finalize-table! [12] 24.7% ----------------------------------------------------------------------- ??? [37] 100.0% [3] 7502(52.5%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [11] 47.0% for-loop [13] 31.1% iterate-egraph!5 [19] 21.9% ----------------------------------------------------------------------- hash-ref! [78] 100.0% [4] 1590(11.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [15] 100.0% ----------------------------------------------------------------------- hash-ref! [78] 100.0% [5] 1590(11.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:392:23 for-loop [14] 100.0% ----------------------------------------------------------------------- hash-ref! [78] 100.0% [6] 1128(7.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [16] 100.0% ----------------------------------------------------------------------- hash-ref! [78] 100.0% [7] 906(6.3%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:322:33 for-loop [17] 100.0% ----------------------------------------------------------------------- loop [89] 100.0% [8] 824(5.8%) 0(0.0%) completely-simplify-alt ...erbie/src/glue.rkt:87:0 simplify-expr [11] 100.0% ----------------------------------------------------------------------- profile-thunk14 [1] 100.0% [9] 14068(98.4%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [37] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [10] 8664(60.6%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [18] 100.0% ----------------------------------------------------------------------- completely-simplify-alt [8] 19.0% simplify [3] 81.0% [11] 4348(30.4%) 202(1.4%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [19] 95.4% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [12] 2836(19.8%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [20] 100.0% ----------------------------------------------------------------------- simplify [3] 100.0% [13] 2332(16.3%) 220(1.5%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [19] 90.6% ----------------------------------------------------------------------- ??? [5] 100.0% [14] 1590(11.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:396:33 for-loop [21] 100.0% ----------------------------------------------------------------------- ??? [4] 100.0% [15] 1590(11.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [78] 100.0% ----------------------------------------------------------------------- ??? [6] 100.0% [16] 1128(7.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [78] 100.0% ----------------------------------------------------------------------- ??? [7] 100.0% [17] 906(6.3%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:324:46 hash-ref! [78] 100.0% ----------------------------------------------------------------------- for-loop [10] 100.0% [18] 8664(60.6%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [22] 86.6% gen-series! [25] 5.6% finalize-iter! [26] 5.3% choose-best-alt! [27] 2.5% ----------------------------------------------------------------------- simplify [3] 20.8% for-loop [13] 26.7% simplify-expr [11] 52.5% [19] 7904(55.3%) 264(1.8%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [23] 94.1% map-enodes [28] 2.6% ----------------------------------------------------------------------- finalize-table! [12] 100.0% [20] 2836(19.8%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 for-loop [24] 55.4% loop [89] 36.8% ??? [33] 7.8% ----------------------------------------------------------------------- for-loop [14] 100.0% [21] 1590(11.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:398:39 hash-ref! [78] 100.0% ----------------------------------------------------------------------- run-iter! [18] 100.0% [22] 7502(52.5%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [29] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [19] 100.0% [23] 7438(52.1%) 0(0.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [30] 67.5% loop [31] 23.5% apply-match [38] 6.0% loop [35] 3.0% ----------------------------------------------------------------------- post-process [20] 100.0% [24] 1570(11.0%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:119:17 append-map [32] 100.0% ----------------------------------------------------------------------- run-iter! [18] 100.0% [25] 484(3.4%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [34] 100.0% ----------------------------------------------------------------------- run-iter! [18] 100.0% [26] 458(3.2%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [33] 100.0% ----------------------------------------------------------------------- run-iter! [18] 100.0% [27] 220(1.5%) 0(0.0%) choose-best-alt! .../herbie/src/mainloop.rkt:120:0 ??? [33] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [19] 100.0% [28] 202(1.4%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 for-loop [36] 100.0% ----------------------------------------------------------------------- simplify! [22] 100.0% [29] 7502(52.5%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [37] 100.0% ----------------------------------------------------------------------- for-loop [30] 46.0% one-iter [23] 54.0% [30] 5024(35.2%) 1672(11.7%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [30] 46.0% match-e [43] 33.4% ----------------------------------------------------------------------- one-iter [23] 100.0% [31] 1750(12.2%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [38] 100.0% ----------------------------------------------------------------------- for-loop [24] 100.0% [32] 1570(11.0%) 0(0.0%) append-map ...acket/collects/racket/list.rkt:565:2 taylor-alt [39] 100.0% ----------------------------------------------------------------------- choose-best-alt! [27] 24.4% post-process [20] 24.7% finalize-iter! [26] 50.9% [33] 900(6.3%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [40] 75.6% atab-pick-alt8 [41] 24.4% ----------------------------------------------------------------------- gen-series! [25] 100.0% [34] 484(3.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [39] 100.0% ----------------------------------------------------------------------- one-iter [23] 100.0% [35] 220(1.5%) 220(1.5%) loop ...ket/collects/racket/private/list.rkt:264:4 ----------------------------------------------------------------------- map-enodes [28] 100.0% [36] 202(1.4%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:161:2 eval-const-expr [42] 100.0% ----------------------------------------------------------------------- for-loop [29] 17.5% run [9] 40.5% [37] 14290(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 40.5% run-improve58 [2] 32.3% simplify [3] 17.5% loop [44] 9.8% ----------------------------------------------------------------------- one-iter [23] 20.2% loop [31] 79.8% [38] 2194(15.4%) 222(1.6%) apply-match .../herbie/src/core/simplify.rkt:122:2 merge-egraph-nodes! [47] 29.3% substitute-e [48] 20.1% match-e [43] 10.1% loop! [50] 10.1% reduce-to-single! [49] 10.1% mk-enode! [56] 10.1% ----------------------------------------------------------------------- for-loop [34] 23.6% append-map [32] 76.4% [39] 2054(14.4%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [45] 100.0% ----------------------------------------------------------------------- ??? [33] 100.0% [40] 680(4.8%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [46] 100.0% ----------------------------------------------------------------------- ??? [33] 100.0% [41] 220(1.5%) 0(0.0%) atab-pick-alt8 ...rbie/src/core/alt-table.rkt:54:0 ??? [51] 100.0% ----------------------------------------------------------------------- for-loop [36] 100.0% [42] 202(1.4%) 0(0.0%) eval-const-expr ...k/herbie/src/programs.rkt:180:0 bf* [52] 100.0% ----------------------------------------------------------------------- apply-match [38] 6.2% for-loop [67] 15.2% for-loop [30] 78.6% [43] 3574(25.0%) 2532(17.7%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [67] 18.3% for-loop [57] 15.0% list-cartesian-product [63] 5.6% constant? [64] 5.5% ----------------------------------------------------------------------- ??? [37] 100.0% [44] 2790(19.5%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [66] 53.5% loop [54] 46.5% ----------------------------------------------------------------------- taylor-alt [39] 100.0% [45] 2054(14.4%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [53] 100.0% ----------------------------------------------------------------------- for-loop [40] 100.0% [46] 680(4.8%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [55] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [47] 23.1% apply-match [38] 76.9% [47] 642(4.5%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [58] 42.7% for-loop [61] 34.3% merge-egraph-nodes! [47] 23.1% ----------------------------------------------------------------------- apply-match [38] 100.0% [48] 442(3.1%) 0(0.0%) substitute-e ...ck/herbie/src/core/ematch.rkt:71:0 mk-enode! [56] 100.0% ----------------------------------------------------------------------- apply-match [38] 100.0% [49] 222(1.6%) 0(0.0%) reduce-to-single! ...bie/src/core/egraph.rkt:324:0 for-loop [59] 100.0% ----------------------------------------------------------------------- apply-match [38] 100.0% [50] 222(1.6%) 0(0.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 custom-set-union [60] 100.0% ----------------------------------------------------------------------- atab-pick-alt8 [41] 100.0% [51] 220(1.5%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:369:33 best-alt [62] 100.0% ----------------------------------------------------------------------- eval-const-expr [42] 100.0% [52] 202(1.4%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [97] 100.0% ----------------------------------------------------------------------- location-do [53] 17.1% for-loop [45] 82.9% [53] 2054(14.4%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [65] 82.9% location-do [53] 17.1% ----------------------------------------------------------------------- loop [44] 100.0% [54] 1298(9.1%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [68] 82.7% make-exacts* [66] 17.3% ----------------------------------------------------------------------- atab-add-altn [46] 100.0% [55] 680(4.8%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [79] 100.0% ----------------------------------------------------------------------- apply-match [38] 33.4% substitute-e [48] 66.6% [56] 664(4.6%) 222(1.6%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 hash-has-key? [69] 66.6% ----------------------------------------------------------------------- match-e [43] 100.0% [57] 646(4.5%) 202(1.4%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [67] 34.4% loop [89] 34.4% ----------------------------------------------------------------------- merge-egraph-nodes! [47] 100.0% [58] 422(3.0%) 0(0.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [70] 100.0% ----------------------------------------------------------------------- reduce-to-single! [49] 100.0% [59] 222(1.6%) 222(1.6%) for-loop ...tlock/herbie/src/core/egraph.rkt:325:8 ----------------------------------------------------------------------- loop! [50] 100.0% [60] 222(1.6%) 0(0.0%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [71] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [47] 100.0% [61] 220(1.5%) 220(1.5%) for-loop ...tlock/herbie/src/core/egraph.rkt:232:6 ----------------------------------------------------------------------- ??? [51] 100.0% [62] 220(1.5%) 0(0.0%) best-alt /home/ztatlock/herbie/src/glue.rkt:79:0 argmins [72] 100.0% ----------------------------------------------------------------------- match-e [43] 100.0% [63] 200(1.4%) 200(1.4%) list-cartesian-product ...src/core/ematch.rkt:20:0 ----------------------------------------------------------------------- match-e [43] 100.0% [64] 196(1.4%) 196(1.4%) constant? ...ck/herbie/src/syntax/syntax.rkt:221:0 ----------------------------------------------------------------------- location-do [53] 100.0% [65] 2054(14.4%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [73] 100.0% ----------------------------------------------------------------------- loop [54] 13.1% loop [44] 86.9% [66] 1716(12.0%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [74] 54.3% loop [89] 45.7% ----------------------------------------------------------------------- for-loop [57] 17.0% match-e [43] 83.0% [67] 1308(9.2%) 222(1.6%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [43] 83.0% ----------------------------------------------------------------------- loop [54] 100.0% [68] 1074(7.5%) 240(1.7%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [74] 77.7% ----------------------------------------------------------------------- mk-enode! [56] 100.0% [69] 442(3.1%) 442(3.1%) hash-has-key? ...et/private/more-scheme.rkt:368:13 ----------------------------------------------------------------------- update-leader! [58] 100.0% [70] 422(3.0%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [75] 100.0% ----------------------------------------------------------------------- custom-set-union [60] 100.0% [71] 222(1.6%) 0(0.0%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [76] 100.0% ----------------------------------------------------------------------- best-alt [62] 100.0% [72] 220(1.5%) 0(0.0%) argmins /home/ztatlock/herbie/src/common.rkt:85:0 composed [77] 100.0% ----------------------------------------------------------------------- approximate9 [65] 100.0% [73] 2054(14.4%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [78] 100.0% ----------------------------------------------------------------------- parse-loop50 [86] 11.2% loop [68] 42.0% make-exacts* [66] 46.9% [74] 1988(13.9%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [89] 88.8% parse-loop50 [86] 11.2% ----------------------------------------------------------------------- for-loop [70] 100.0% [75] 422(3.0%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [80] 100.0% ----------------------------------------------------------------------- for-loop [71] 100.0% [76] 222(1.6%) 222(1.6%) for-loop ...cts/racket/private/set-types.rkt:178:5 ----------------------------------------------------------------------- argmins [72] 100.0% [77] 220(1.5%) 0(0.0%) composed ...ollects/racket/private/list.rkt:321:16 errors [79] 100.0% ----------------------------------------------------------------------- ??? [94] 4.8% localize-error [93] 4.8% for-loop [17] 6.6% for-loop [16] 8.6% for-loop [15] 13.7% for-loop [21] 13.7% ??? [81] 18.6% loop [73] 29.2% [78] 2274(15.9%) 242(1.7%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [81] 18.6% simplify [82] 18.6% ??? [5] 13.7% ??? [4] 13.7% parse-loop50 [86] 9.7% ??? [6] 8.6% ??? [7] 6.6% ----------------------------------------------------------------------- composed [77] 24.4% best-and-tied-at-points [55] 75.6% [79] 900(6.3%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 eval-prog [83] 75.6% for-loop [85] 24.4% ----------------------------------------------------------------------- for-loop [75] 100.0% [80] 422(3.0%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [84] 100.0% ----------------------------------------------------------------------- hash-ref! [78] 100.0% [81] 1812(12.7%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [78] 100.0% ----------------------------------------------------------------------- hash-ref! [78] 100.0% [82] 1812(12.7%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 parse-loop50 [86] 100.0% ----------------------------------------------------------------------- errors [79] 100.0% [83] 680(4.8%) 222(1.6%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 parse-app [90] 35.3% ??? [88] 32.1% ----------------------------------------------------------------------- hash-update! [80] 100.0% [84] 422(3.0%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [87] 100.0% ----------------------------------------------------------------------- errors [79] 100.0% [85] 220(1.5%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [92] 100.0% ----------------------------------------------------------------------- map [74] 3.6% hash-ref! [78] 10.8% loop [89] 14.1% simplify [82] 32.7% parse-loop50 [86] 38.8% [86] 2032(14.2%) 1790(12.5%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 parse-loop50 [86] 38.8% loop [89] 19.5% map [74] 3.6% parse-app [90] 2.4% ----------------------------------------------------------------------- ??? [84] 100.0% [87] 422(3.0%) 422(3.0%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 ----------------------------------------------------------------------- eval-prog [83] 100.0% [88] 218(1.5%) 0(0.0%) ??? ...collects/racket/private/qq-and-or.rkt:155:9 ??? [91] 100.0% ----------------------------------------------------------------------- make-exacts* [66] 0.0% for-loop [57] 0.1% map [74] 0.5% post-process [20] 7.6% parse-loop50 [86] 19.3% loop [89] 72.5% [89] 4942(34.6%) 720(5.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [89] 72.5% parse-loop50 [86] 17.1% completely-simplify-alt [8] 5.4% localize-error [93] 2.2% ??? [94] 2.2% ??? [92] 0.4% ----------------------------------------------------------------------- eval-prog [83] 49.8% parse-loop50 [86] 50.2% [90] 482(3.4%) 482(3.4%) parse-app .../collects/racket/private/kw.rkt:903:2 ----------------------------------------------------------------------- ??? [88] 100.0% [91] 218(1.5%) 218(1.5%) ??? ...ollects/racket/private/qq-and-or.rkt:164:21 ----------------------------------------------------------------------- for-loop [85] 9.7% loop [89] 90.3% [92] 2272(15.9%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [95] 59.8% real->bigfloat [96] 31.4% ??? [103] 8.8% ----------------------------------------------------------------------- loop [89] 100.0% [93] 220(1.5%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [78] 100.0% ----------------------------------------------------------------------- loop [89] 100.0% [94] 220(1.5%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [78] 100.0% ----------------------------------------------------------------------- ??? [92] 100.0% [95] 1358(9.5%) 0(0.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [97] 66.3% ...higher-order.rkt:373:33 [98] 17.5% ??? [99] 16.2% ----------------------------------------------------------------------- ??? [92] 100.0% [96] 714(5.0%) 268(1.9%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [102] 62.5% ----------------------------------------------------------------------- bf* [52] 18.3% ??? [95] 81.7% [97] 1102(7.7%) 238(1.7%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [100] 60.1% ??? [104] 18.3% ----------------------------------------------------------------------- ??? [95] 100.0% [98] 238(1.7%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [101] 100.0% ----------------------------------------------------------------------- ??? [95] 100.0% [99] 220(1.5%) 220(1.5%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ----------------------------------------------------------------------- ??? [97] 100.0% [100] 662(4.6%) 218(1.5%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [102] 67.1% ----------------------------------------------------------------------- ...higher-order.rkt:373:33 [98]100.0% [101] 238(1.7%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [103] 100.0% ----------------------------------------------------------------------- bfmul [100] 49.9% real->bigfloat [96] 50.1% [102] 890(6.2%) 890(6.2%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ----------------------------------------------------------------------- ??? [92] 45.7% ??? [101] 54.3% [103] 438(3.1%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [104] 100.0% ----------------------------------------------------------------------- ??? [97] 31.6% ??? [103] 68.4% [104] 640(4.5%) 438(3.1%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [105] 31.6% ----------------------------------------------------------------------- ??? [104] 100.0% [105] 202(1.4%) 202(1.4%) ??? ...llects/racket/contract/combinator.rkt:178:4 -----------------------------------------------------------------------