Profiling results ----------------- Total cpu time observed: 20014ms (out of 20296ms) Number of samples taken: 100 (once every 200ms) (Hiding functions with self<1.0% and local<2.0%: 1 of 104 hidden) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [29] 100.0% [1] 19862(99.2%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [6] 100.0% ----------------------------------------------------------------------- ??? [29] 100.0% [2] 7378(36.9%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [7] 88.5% loop [35] 6.5% get-final-combination [12] 5.1% ----------------------------------------------------------------------- loop [68] 7.1% ??? [29] 92.9% [3] 5256(26.3%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [8] 63.3% iterate-egraph!5 [14] 24.1% for-loop [9] 12.6% ----------------------------------------------------------------------- hash-ref! [73] 100.0% [4] 422(2.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [10] 100.0% ----------------------------------------------------------------------- hash-ref! [73] 100.0% [5] 412(2.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [11] 100.0% ----------------------------------------------------------------------- profile-thunk14 [1] 100.0% [6] 19862(99.2%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [29] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [7] 6526(32.6%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [13] 100.0% ----------------------------------------------------------------------- simplify [3] 100.0% [8] 3328(16.6%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [14] 94.7% loop [15] 5.3% ----------------------------------------------------------------------- simplify [3] 100.0% [9] 662(3.3%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [14] 66.8% loop [15] 33.2% ----------------------------------------------------------------------- ??? [4] 100.0% [10] 422(2.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [73] 100.0% ----------------------------------------------------------------------- ??? [5] 100.0% [11] 412(2.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [73] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [12] 374(1.9%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 extract-alt [16] 100.0% ----------------------------------------------------------------------- for-loop [7] 100.0% [13] 6526(32.6%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [17] 74.8% gen-series! [19] 12.8% finalize-iter! [20] 9.3% choose-best-alt! [22] 3.1% ----------------------------------------------------------------------- for-loop [9] 9.1% simplify [3] 26.0% simplify-expr [8] 64.9% [14] 4860(24.3%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [18] 100.0% ----------------------------------------------------------------------- simplify-expr [8] 44.4% for-loop [9] 55.6% [15] 396(2.0%) 0(0.0%) loop ...tatlock/herbie/src/core/simplify.rkt:203:2 pass [21] 100.0% ----------------------------------------------------------------------- get-final-combination [12] 100.0% [16] 374(1.9%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [68] 100.0% ----------------------------------------------------------------------- run-iter! [13] 100.0% [17] 4882(24.4%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [23] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [14] 100.0% [18] 4860(24.3%) 0(0.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [24] 52.0% loop [25] 43.5% apply-match [30] 4.5% ----------------------------------------------------------------------- run-iter! [13] 100.0% [19] 834(4.2%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [26] 100.0% ----------------------------------------------------------------------- run-iter! [13] 100.0% [20] 608(3.0%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [27] 100.0% ----------------------------------------------------------------------- loop [15] 100.0% [21] 396(2.0%) 0(0.0%) pass ...tatlock/herbie/src/core/simplify.rkt:193:2 for-loop [28] 100.0% ----------------------------------------------------------------------- run-iter! [13] 100.0% [22] 202(1.0%) 0(0.0%) choose-best-alt! .../herbie/src/mainloop.rkt:120:0 ??? [27] 100.0% ----------------------------------------------------------------------- simplify! [17] 100.0% [23] 4882(24.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [29] 100.0% ----------------------------------------------------------------------- for-loop [24] 45.2% one-iter [18] 54.8% [24] 2526(12.6%) 862(4.3%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [24] 45.2% match-e [36] 32.9% ----------------------------------------------------------------------- one-iter [18] 100.0% [25] 2114(10.6%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [30] 100.0% ----------------------------------------------------------------------- gen-series! [19] 100.0% [26] 834(4.2%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [31] 100.0% ----------------------------------------------------------------------- choose-best-alt! [22] 24.9% finalize-iter! [20] 75.1% [27] 810(4.0%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [32] 75.1% atab-pick-alt8 [34] 24.9% ----------------------------------------------------------------------- pass [21] 100.0% [28] 396(2.0%) 176(0.9%) for-loop ...ck/herbie/src/core/simplify.rkt:196:29 for-loop [33] 55.6% ----------------------------------------------------------------------- for-loop [23] 8.1% run [6] 45.6% [29] 20014(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 45.6% loop [35] 31.9% run-improve58 [2] 14.4% simplify [3] 8.1% ----------------------------------------------------------------------- one-iter [18] 9.4% loop [25] 90.6% [30] 2334(11.7%) 220(1.1%) apply-match .../herbie/src/core/simplify.rkt:122:2 for-loop [39] 19.0% merge-egraph-nodes! [45] 18.2% match-e [36] 17.2% loop! [74] 17.2% substitute-e [40] 9.5% update-leader! [54] 9.4% ----------------------------------------------------------------------- for-loop [26] 100.0% [31] 834(4.2%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [37] 100.0% ----------------------------------------------------------------------- ??? [27] 100.0% [32] 608(3.0%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [38] 100.0% ----------------------------------------------------------------------- for-loop [28] 100.0% [33] 220(1.1%) 220(1.1%) for-loop ...ck/herbie/src/core/simplify.rkt:183:13 ----------------------------------------------------------------------- ??? [27] 100.0% [34] 202(1.0%) 0(0.0%) atab-pick-alt8 ...rbie/src/core/alt-table.rkt:54:0 ??? [41] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 3.6% ??? [29] 96.4% [35] 13114(65.5%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 loop [42] 48.7% make-exacts* [51] 34.2% loop [52] 16.0% for-loop [50] 1.2% ----------------------------------------------------------------------- for-loop [56] 9.8% apply-match [30] 19.5% for-loop [24] 70.8% [36] 2066(10.3%) 820(4.1%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [43] 55.5% list-cartesian-product [55] 9.7% ----------------------------------------------------------------------- taylor-alt [31] 100.0% [37] 834(4.2%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [44] 100.0% ----------------------------------------------------------------------- for-loop [32] 100.0% [38] 608(3.0%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [46] 66.8% loop [48] 33.2% ----------------------------------------------------------------------- apply-match [30] 100.0% [39] 444(2.2%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 loop! [74] 50.5% merge-egraph-nodes! [45] 49.5% ----------------------------------------------------------------------- apply-match [30] 100.0% [40] 222(1.1%) 0(0.0%) substitute-e ...ck/herbie/src/core/ematch.rkt:71:0 mk-enode! [47] 100.0% ----------------------------------------------------------------------- atab-pick-alt8 [34] 100.0% [41] 202(1.0%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:369:33 best-alt [49] 100.0% ----------------------------------------------------------------------- loop [35] 100.0% [42] 6384(31.9%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [52] 62.6% make-exacts* [51] 37.4% ----------------------------------------------------------------------- match-e [36] 100.0% [43] 1248(6.2%) 622(3.1%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [56] 24.3% list-cartesian-product [55] 17.8% loop [68] 16.2% ----------------------------------------------------------------------- location-do [44] 29.3% for-loop [37] 70.7% [44] 834(4.2%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [53] 70.7% location-do [44] 29.3% ----------------------------------------------------------------------- merge-egraph-nodes! [45] 15.7% for-loop [39] 34.2% apply-match [30] 50.2% [45] 644(3.2%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [54] 50.2% for-loop [58] 34.2% merge-egraph-nodes! [45] 15.7% ----------------------------------------------------------------------- atab-add-altn [38] 100.0% [46] 406(2.0%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [69] 100.0% ----------------------------------------------------------------------- substitute-e [40] 100.0% [47] 222(1.1%) 0(0.0%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 hash-has-key? [57] 100.0% ----------------------------------------------------------------------- atab-add-altn [38] 100.0% [48] 202(1.0%) 202(1.0%) loop ...atlock/herbie/src/core/alt-table.rkt:182:2 ----------------------------------------------------------------------- ??? [41] 100.0% [49] 202(1.0%) 0(0.0%) best-alt /home/ztatlock/herbie/src/glue.rkt:79:0 loop [59] 100.0% ----------------------------------------------------------------------- loop [35] 100.0% [50] 152(0.8%) 0(0.0%) for-loop .../ztatlock/herbie/src/points.rkt:128:18 for-loop [60] 100.0% ----------------------------------------------------------------------- loop [42] 34.8% loop [35] 65.2% [51] 6876(34.4%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [61] 58.5% loop [68] 41.5% ----------------------------------------------------------------------- loop [35] 34.4% loop [42] 65.6% [52] 6086(30.4%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [61] 100.0% ----------------------------------------------------------------------- location-do [44] 100.0% [53] 834(4.2%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [62] 76.0% taylor-quotient [66] 24.0% ----------------------------------------------------------------------- apply-match [30] 34.2% merge-egraph-nodes! [45] 65.8% [54] 644(3.2%) 222(1.1%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [63] 65.5% ----------------------------------------------------------------------- list-cartesian-product [55] 26.3% for-loop [43] 26.3% match-e [36] 47.4% [55] 422(2.1%) 222(1.1%) list-cartesian-product ...src/core/ematch.rkt:20:0 for-loop [65] 47.4% list-cartesian-product [55] 26.3% ----------------------------------------------------------------------- for-loop [43] 100.0% [56] 404(2.0%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [36] 100.0% ----------------------------------------------------------------------- mk-enode! [47] 100.0% [57] 222(1.1%) 222(1.1%) hash-has-key? ...et/private/more-scheme.rkt:368:13 ----------------------------------------------------------------------- merge-egraph-nodes! [45] 100.0% [58] 220(1.1%) 220(1.1%) for-loop ...tlock/herbie/src/core/egraph.rkt:232:6 ----------------------------------------------------------------------- best-alt [49] 100.0% [59] 202(1.0%) 0(0.0%) loop /home/ztatlock/herbie/src/common.rkt:86:2 composed [64] 100.0% ----------------------------------------------------------------------- for-loop [50] 100.0% [60] 152(0.8%) 0(0.0%) for-loop .../ztatlock/herbie/src/points.rkt:129:20 sample [67] 100.0% ----------------------------------------------------------------------- make-exacts* [51] 39.8% loop [52] 60.2% [61] 10106(50.5%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [68] 96.2% ??? [80] 3.8% ----------------------------------------------------------------------- approximate9 [53] 100.0% [62] 634(3.2%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [73] 100.0% ----------------------------------------------------------------------- update-leader! [54] 100.0% [63] 422(2.1%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [70] 100.0% ----------------------------------------------------------------------- loop [59] 100.0% [64] 202(1.0%) 0(0.0%) composed ...ollects/racket/private/list.rkt:321:16 errors [69] 100.0% ----------------------------------------------------------------------- list-cartesian-product [55] 100.0% [65] 200(1.0%) 200(1.0%) for-loop ...atlock/herbie/src/core/ematch.rkt:24:8 ----------------------------------------------------------------------- approximate9 [53] 100.0% [66] 200(1.0%) 0(0.0%) taylor-quotient ...erbie/src/core/taylor.rkt:328:0 first-nonzero-exp [71] 100.0% ----------------------------------------------------------------------- for-loop [60] 100.0% [67] 152(0.8%) 0(0.0%) sample /home/ztatlock/herbie/src/points.rkt:68:0 sample-default [72] 100.0% ----------------------------------------------------------------------- loop! [74] 0.2% ??? [80] 0.6% extract-alt [16] 1.4% make-exacts* [51] 1.4% for-loop [43] 1.5% parse-loop50 [90] 1.6% map [61] 3.8% loop [68] 89.5% [68] 13588(67.9%) 366(1.8%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [68] 89.5% ??? [80] 5.2% parse-loop50 [90] 1.6% simplify [3] 1.4% real->bigfloat [89] 0.6% loop! [74] 0.2% ->flonum [78] 0.0% ----------------------------------------------------------------------- composed [64] 33.2% best-and-tied-at-points [46] 66.8% [69] 608(3.0%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [76] 66.8% eval-prog [77] 33.2% ----------------------------------------------------------------------- for-loop [63] 100.0% [70] 422(2.1%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [75] 100.0% ----------------------------------------------------------------------- taylor-quotient [66] 100.0% [71] 200(1.0%) 0(0.0%) first-nonzero-exp ...bie/src/core/taylor.rkt:260:0 hash-ref! [73] 100.0% ----------------------------------------------------------------------- sample [67] 100.0% [72] 152(0.8%) 0(0.0%) sample-default ...rc/syntax/distributions.rkt:11:0 ??? [79] 100.0% ----------------------------------------------------------------------- ??? [87] 5.1% ??? [84] 11.1% first-nonzero-exp [71] 12.0% for-loop [11] 17.1% ??? [82] 17.7% loop [62] 17.7% for-loop [10] 19.2% [73] 834(4.2%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 simplify [81] 29.7% ??? [4] 19.2% ??? [82] 17.7% ??? [5] 17.1% ??? [84] 11.1% ??? [87] 5.1% ----------------------------------------------------------------------- loop [68] 17.9% for-loop [39] 17.9% apply-match [30] 64.2% [74] 626(3.1%) 0(0.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 custom-set-union [85] 64.2% loop [68] 17.9% update-en-expr [86] 17.9% ----------------------------------------------------------------------- for-loop [70] 100.0% [75] 422(2.1%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [83] 100.0% ----------------------------------------------------------------------- errors [69] 100.0% [76] 406(2.0%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [80] 100.0% ----------------------------------------------------------------------- errors [69] 100.0% [77] 202(1.0%) 202(1.0%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 ----------------------------------------------------------------------- loop [68] 100.0% [78] 162(0.8%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [100] 100.0% ----------------------------------------------------------------------- sample-default [72] 100.0% [79] 152(0.8%) 152(0.8%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ----------------------------------------------------------------------- map [61] 2.9% for-loop [76] 3.1% loop [68] 94.0% [80] 13206(66.0%) 1382(6.9%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [88] 54.9% real->bigfloat [89] 13.8% loop [68] 11.9% ??? [97] 7.7% ----------------------------------------------------------------------- hash-ref! [73] 100.0% [81] 834(4.2%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 parse-loop50 [90] 100.0% ----------------------------------------------------------------------- hash-ref! [73] 100.0% [82] 634(3.2%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [73] 100.0% ----------------------------------------------------------------------- hash-update! [75] 100.0% [83] 422(2.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [91] 100.0% ----------------------------------------------------------------------- hash-ref! [73] 100.0% [84] 414(2.1%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:63:15 hash-ref! [73] 100.0% ----------------------------------------------------------------------- loop! [74] 100.0% [85] 402(2.0%) 402(2.0%) custom-set-union ...et/private/set-types.rkt:168:0 ----------------------------------------------------------------------- loop! [74] 100.0% [86] 224(1.1%) 224(1.1%) update-en-expr ...herbie/src/core/egraph.rkt:211:0 ----------------------------------------------------------------------- hash-ref! [73] 100.0% [87] 212(1.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:338:33 hash-ref! [73] 100.0% ----------------------------------------------------------------------- ??? [80] 100.0% [88] 7244(36.2%) 556(2.8%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [95] 57.7% bf* [92] 19.1% ...higher-order.rkt:373:33 [93] 15.5% ----------------------------------------------------------------------- loop [68] 43.6% ??? [80] 56.4% [89] 3226(16.1%) 2114(10.6%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [101] 34.5% ----------------------------------------------------------------------- loop [68] 12.7% parse-loop50 [90] 29.7% simplify [81] 57.6% [90] 834(4.2%) 632(3.2%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 parse-loop50 [90] 29.7% loop [68] 12.7% parse-app [94] 12.1% ----------------------------------------------------------------------- ??? [83] 100.0% [91] 422(2.1%) 422(2.1%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 ----------------------------------------------------------------------- ??? [88] 100.0% [92] 1386(6.9%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [95] 100.0% ----------------------------------------------------------------------- ??? [88] 100.0% [93] 1122(5.6%) 190(0.9%) ...higher-order.rkt:373:33 (unknown source) ??? [96] 83.1% ----------------------------------------------------------------------- parse-loop50 [90] 100.0% [94] 202(1.0%) 202(1.0%) parse-app .../collects/racket/private/kw.rkt:903:2 ----------------------------------------------------------------------- bf* [92] 24.9% ??? [88] 75.1% [95] 5566(27.8%) 2802(14.0%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bflog [98] 31.7% bfmul [99] 9.0% ??? [100] 9.0% ----------------------------------------------------------------------- ...higher-order.rkt:373:33 [93]100.0% [96] 932(4.7%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [97] 100.0% ----------------------------------------------------------------------- ??? [96] 47.9% ??? [80] 52.1% [97] 1944(9.7%) 760(3.8%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [100] 60.9% ----------------------------------------------------------------------- ??? [95] 100.0% [98] 1764(8.8%) 1582(7.9%) bflog ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [101] 10.3% ----------------------------------------------------------------------- ??? [95] 100.0% [99] 500(2.5%) 170(0.8%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [101] 66.0% ----------------------------------------------------------------------- ->flonum [78] 8.8% ??? [95] 27.1% ??? [97] 64.1% [100] 1846(9.2%) 1046(5.2%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [102] 43.3% ----------------------------------------------------------------------- bflog [98] 11.2% bfmul [99] 20.3% real->bigfloat [89] 68.5% [101] 1624(8.1%) 1624(8.1%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ----------------------------------------------------------------------- ??? [100] 100.0% [102] 800(4.0%) 312(1.6%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [103] 61.0% ----------------------------------------------------------------------- ??? [102] 100.0% [103] 488(2.4%) 488(2.4%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 -----------------------------------------------------------------------