Profiling results ----------------- Total cpu time observed: 22734ms (out of 23380ms) Number of samples taken: 97 (once every 234ms) ====================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ====================================================================== ??? [37] 100.0% [1] 21926(96.4%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [10] 100.0% ---------------------------------------------------------------------- ??? [37] 100.0% [2] 7494(33.0%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [11] 71.7% get-final-combination [13] 21.9% loop [43] 6.4% ---------------------------------------------------------------------- loop [63] 5.1% ??? [37] 94.9% [3] 3892(17.1%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [12] 84.1% for-loop [15] 15.9% ---------------------------------------------------------------------- copying-mergesort [51] 100.0% [4] 826(3.6%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [14] 100.0% ---------------------------------------------------------------------- hash-ref! [70] 100.0% [5] 484(2.1%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 loop [63] 100.0% ---------------------------------------------------------------------- hash-ref! [70] 100.0% [6] 424(1.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [16] 100.0% ---------------------------------------------------------------------- location-do [52] 100.0% [7] 424(1.9%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [17] 100.0% ---------------------------------------------------------------------- hash-ref! [70] 100.0% [8] 222(1.0%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [18] 100.0% ---------------------------------------------------------------------- parse-loop12 [94] 100.0% [9] 202(0.9%) 0(0.0%) simplify-node ...k/herbie/src/core/reduce.rkt:41:0 f6 [76] 100.0% ---------------------------------------------------------------------- profile-thunk14 [1] 100.0% [10] 21926(96.4%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [37] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [11] 5374(23.6%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [19] 100.0% ---------------------------------------------------------------------- simplify [3] 100.0% [12] 3274(14.4%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [20] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [13] 1644(7.2%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [21] 88.0% extract-alt [22] 12.0% ---------------------------------------------------------------------- loop [58] 42.9% jloop [4] 57.1% [14] 1446(6.4%) 0(0.0%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [61] 100.0% ---------------------------------------------------------------------- simplify [3] 100.0% [15] 618(2.7%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [20] 100.0% ---------------------------------------------------------------------- ??? [6] 100.0% [16] 424(1.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [70] 100.0% ---------------------------------------------------------------------- approximate9 [7] 100.0% [17] 424(1.9%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [70] 100.0% ---------------------------------------------------------------------- ??? [8] 100.0% [18] 222(1.0%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [70] 100.0% ---------------------------------------------------------------------- for-loop [11] 100.0% [19] 5374(23.6%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [23] 68.7% gen-series! [26] 11.6% finalize-iter! [27] 11.5% localize-error [28] 8.2% ---------------------------------------------------------------------- for-loop [15] 15.9% simplify-expr [12] 84.1% [20] 3892(17.1%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [24] 89.7% map-enodes [29] 10.3% ---------------------------------------------------------------------- get-final-combination [13] 100.0% [21] 1446(6.4%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [25] 100.0% ---------------------------------------------------------------------- get-final-combination [13] 100.0% [22] 198(0.9%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [63] 100.0% ---------------------------------------------------------------------- run-iter! [19] 100.0% [23] 3694(16.2%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [30] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [20] 100.0% [24] 3492(15.4%) 0(0.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [31] 93.8% apply-match [35] 6.2% ---------------------------------------------------------------------- split-table [21] 100.0% [25] 1446(6.4%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [32] 100.0% ---------------------------------------------------------------------- run-iter! [19] 100.0% [26] 624(2.7%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [33] 100.0% ---------------------------------------------------------------------- run-iter! [19] 100.0% [27] 618(2.7%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [34] 100.0% ---------------------------------------------------------------------- run-iter! [19] 100.0% [28] 438(1.9%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [70] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [20] 100.0% [29] 400(1.8%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 curried [36] 50.0% loop [63] 50.0% ---------------------------------------------------------------------- simplify! [23] 100.0% [30] 3694(16.2%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [37] 100.0% ---------------------------------------------------------------------- for-loop [31] 46.9% one-iter [24] 53.1% [31] 3274(14.4%) 1042(4.6%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [31] 46.9% match-e [38] 34.1% ---------------------------------------------------------------------- infer-splitpoints4 [25] 100.0% [32] 1446(6.4%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [39] 100.0% ---------------------------------------------------------------------- gen-series! [26] 100.0% [33] 624(2.7%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [40] 100.0% ---------------------------------------------------------------------- finalize-iter! [27] 100.0% [34] 618(2.7%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [41] 100.0% ---------------------------------------------------------------------- one-iter [24] 100.0% [35] 218(1.0%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 loop! [42] 100.0% ---------------------------------------------------------------------- map-enodes [29] 100.0% [36] 200(0.9%) 200(0.9%) curried ...cket/collects/racket/function.rkt:71:18 ---------------------------------------------------------------------- for-loop [30] 5.5% run [10] 45.9% [37] 22532(99.1%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 45.9% loop [43] 33.8% run-improve58 [2] 14.8% simplify [3] 5.5% ---------------------------------------------------------------------- for-loop [48] 9.1% for-loop [31] 90.9% [38] 2232(9.8%) 1628(7.2%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [47] 13.6% for-loop [48] 9.1% custom-in-set [49] 9.0% ---------------------------------------------------------------------- option-on-expr [32] 100.0% [39] 1446(6.4%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [44] 100.0% ---------------------------------------------------------------------- for-loop [33] 100.0% [40] 624(2.7%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [45] 100.0% ---------------------------------------------------------------------- ??? [34] 100.0% [41] 618(2.7%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [46] 100.0% ---------------------------------------------------------------------- apply-match [35] 100.0% [42] 218(1.0%) 218(1.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 ---------------------------------------------------------------------- run-improve58 [2] 3.1% ??? [37] 96.9% [43] 15514(68.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 loop [50] 52.3% make-exacts* [55] 34.8% loop [56] 11.3% for-loop [54] 1.5% ---------------------------------------------------------------------- sort-context-on-expr [39] 100.0% [44] 1446(6.4%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [51] 71.0% loop [58] 29.0% ---------------------------------------------------------------------- taylor-alt [40] 100.0% [45] 624(2.7%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [52] 100.0% ---------------------------------------------------------------------- for-loop [41] 100.0% [46] 618(2.7%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [53] 100.0% ---------------------------------------------------------------------- match-e [38] 100.0% [47] 404(1.8%) 404(1.8%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 ---------------------------------------------------------------------- match-e [38] 100.0% [48] 404(1.8%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [38] 100.0% ---------------------------------------------------------------------- match-e [38] 100.0% [49] 200(0.9%) 200(0.9%) custom-in-set ...acket/private/set-types.rkt:578:0 ---------------------------------------------------------------------- loop [43] 100.0% [50] 8114(35.7%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [56] 55.8% make-exacts* [55] 41.5% eval-prog [61] 2.8% ---------------------------------------------------------------------- sort [44] 39.6% copying-mergesort [51] 60.4% [51] 1026(4.5%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [51] 60.4% jloop [4] 20.1% loop [58] 19.5% ---------------------------------------------------------------------- for-loop [45] 30.4% location-do [52] 69.6% [52] 624(2.7%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 location-do [52] 69.6% approximate9 [7] 19.7% simplify [57] 10.7% ---------------------------------------------------------------------- atab-add-altn [46] 100.0% [53] 618(2.7%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [59] 100.0% ---------------------------------------------------------------------- loop [43] 100.0% [54] 240(1.1%) 240(1.1%) for-loop .../ztatlock/herbie/src/points.rkt:128:18 ---------------------------------------------------------------------- loop [50] 38.4% loop [43] 61.6% [55] 8770(38.6%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [60] 51.7% loop [63] 38.4% eval-prog [61] 9.9% ---------------------------------------------------------------------- loop [43] 28.0% loop [50] 72.0% [56] 6280(27.6%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [60] 100.0% ---------------------------------------------------------------------- location-do [52] 32.1% hash-ref! [70] 67.9% [57] 624(2.7%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 f6 [76] 67.6% parse-loop12 [94] 32.4% ---------------------------------------------------------------------- copying-mergesort [51] 32.3% sort [44] 67.7% [58] 620(2.7%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [14] 100.0% ---------------------------------------------------------------------- best-and-tied-at-points [53] 100.0% [59] 618(2.7%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [62] 64.4% eval-prog [61] 35.6% ---------------------------------------------------------------------- f6 [76] 7.2% make-exacts* [55] 38.9% loop [56] 53.9% [60] 11650(51.2%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [63] 92.1% ??? [66] 2.8% parse-loop12 [94] 2.1% ??? [65] 1.7% f6 [76] 1.4% ---------------------------------------------------------------------- errors [59] 8.0% loop [50] 8.1% make-exacts* [55] 31.5% ??? [14] 52.4% [61] 2758(12.1%) 1888(8.3%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 hash-ref! [70] 31.5% ---------------------------------------------------------------------- errors [59] 100.0% [62] 398(1.8%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [64] 50.3% ??? [65] 49.7% ---------------------------------------------------------------------- extract-alt [22] 0.6% map-enodes [29] 0.6% parse-loop12 [94] 2.0% make-exacts* [55] 2.1% ??? [5] 3.1% map [60] 3.6% loop [63] 87.8% [63] 15508(68.2%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [63] 87.8% ??? [65] 5.4% hash-ref! [70] 3.1% ??? [66] 1.4% f6 [76] 0.7% for-loop [67] 0.6% simplify [3] 0.6% ->flonum [71] 0.2% ??? [83] 0.0% ---------------------------------------------------------------------- for-loop [62] 100.0% [64] 200(0.9%) 200(0.9%) ??? ...tract/private/arrow-higher-order.rkt:369:33 ---------------------------------------------------------------------- map [60] 1.5% for-loop [62] 1.5% loop [63] 97.1% [65] 13480(59.3%) 874(3.8%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [68] 63.7% real->bigfloat [69] 20.3% ...e/case-arrow.rkt:150:50 [72] 5.1% ??? [92] 2.9% ->flonum [71] 1.5% ---------------------------------------------------------------------- loop [63] 32.9% map [60] 67.1% [66] 438(1.9%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [70] 100.0% ---------------------------------------------------------------------- loop [63] 100.0% [67] 200(0.9%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:161:2 eval-const-expr [73] 100.0% ---------------------------------------------------------------------- ??? [65] 100.0% [68] 8588(37.8%) 266(1.2%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [83] 49.5% bf* [74] 31.3% ...higher-order.rkt:373:33 [75] 16.1% ---------------------------------------------------------------------- ??? [65] 100.0% [69] 2738(12.0%) 2738(12.0%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ---------------------------------------------------------------------- for-loop [18] 2.1% ??? [79] 4.3% ??? [78] 5.1% loop [17] 5.1% for-loop [16] 8.0% localize-error [28] 9.5% ??? [66] 15.8% loop [63] 18.6% eval-prog [61] 31.6% [70] 1732(7.6%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 bigfloat-hash [77] 31.6% ??? [5] 18.6% f6 [76] 15.9% ??? [6] 8.0% parse-loop12 [94] 6.2% ??? [78] 5.1% simplify [57] 5.1% ??? [79] 4.3% ??? [80] 3.1% ??? [8] 2.1% ---------------------------------------------------------------------- ??? [65] 18.0% loop [63] 82.0% [71] 1098(4.8%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [96] 82.0% ??? [82] 18.0% ---------------------------------------------------------------------- ??? [65] 100.0% [72] 686(3.0%) 686(3.0%) ...e/case-arrow.rkt:150:50 (unknown source) ---------------------------------------------------------------------- for-loop [67] 100.0% [73] 200(0.9%) 0(0.0%) eval-const-expr ...k/herbie/src/programs.rkt:180:0 bfcube [81] 100.0% ---------------------------------------------------------------------- ??? [68] 100.0% [74] 2684(11.8%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [83] 100.0% ---------------------------------------------------------------------- ??? [68] 100.0% [75] 1384(6.1%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [84] 68.8% ??? [92] 31.2% ---------------------------------------------------------------------- parse-loop12 [94] 3.1% simplify-node [9] 9.5% loop [63] 9.5% map [60] 12.6% simplify [57] 24.0% hash-ref! [70] 41.2% [76] 1062(4.7%) 422(1.9%) f6 ...et/collects/racket/match/compiler.rkt:499:40 map [60] 66.4% append-map [89] 9.5% ---------------------------------------------------------------------- hash-ref! [70] 100.0% [77] 870(3.8%) 0(0.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 sig+exp->bigfloat [85] 44.8% bigfloat->sig+exp [86] 29.9% bfcanonicalize [87] 25.3% ---------------------------------------------------------------------- hash-ref! [70] 100.0% [78] 424(1.9%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [70] 100.0% ---------------------------------------------------------------------- hash-ref! [70] 100.0% [79] 222(1.0%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:357:30 hash-ref! [70] 100.0% ---------------------------------------------------------------------- hash-ref! [70] 100.0% [80] 216(1.0%) 0(0.0%) ??? ...ztatlock/herbie/src/core/localize.rkt:22:13 repeat [88] 100.0% ---------------------------------------------------------------------- eval-const-expr [73] 100.0% [81] 200(0.9%) 0(0.0%) bfcube ...tlock/herbie/src/syntax/syntax.rkt:119:0 ...ow-val-first.rkt:357:18 [90]100.0% ---------------------------------------------------------------------- ->flonum [71] 100.0% [82] 198(0.9%) 198(0.9%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ---------------------------------------------------------------------- loop [63] 3.1% bf* [74] 37.5% ??? [68] 59.4% [83] 7160(31.5%) 706(3.1%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfsub [91] 43.7% ??? [96] 24.1% bfsqrt [93] 22.4% ---------------------------------------------------------------------- ...higher-order.rkt:373:33 [75]100.0% [84] 952(4.2%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [92] 100.0% ---------------------------------------------------------------------- bigfloat-hash [77] 100.0% [85] 390(1.7%) 390(1.7%) sig+exp->bigfloat ...ivate/bigfloat/mpfr.rkt:385:0 ---------------------------------------------------------------------- bigfloat-hash [77] 100.0% [86] 260(1.1%) 260(1.1%) bigfloat->sig+exp ...ivate/bigfloat/mpfr.rkt:370:0 ---------------------------------------------------------------------- bigfloat-hash [77] 100.0% [87] 220(1.0%) 220(1.0%) bfcanonicalize .../private/bigfloat/mpfr.rkt:155:0 ---------------------------------------------------------------------- ??? [80] 100.0% [88] 216(1.0%) 0(0.0%) repeat ...atlock/herbie/src/core/localize.rkt:13:0 for-loop [95] 100.0% ---------------------------------------------------------------------- f6 [76] 100.0% [89] 202(0.9%) 0(0.0%) append-map ...acket/collects/racket/list.rkt:565:2 parse-loop12 [94] 100.0% ---------------------------------------------------------------------- bfcube [81] 100.0% [90] 200(0.9%) 200(0.9%) ...ow-val-first.rkt:357:18 (unknown source) ---------------------------------------------------------------------- ??? [83] 100.0% [91] 3128(13.8%) 2198(9.7%) bfsub ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [97] 29.7% ---------------------------------------------------------------------- ??? [65] 22.2% ...higher-order.rkt:373:33 [75] 24.3% ??? [84] 53.5% [92] 1780(7.8%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [96] 100.0% ---------------------------------------------------------------------- ??? [83] 100.0% [93] 1604(7.1%) 1604(7.1%) bfsqrt ...lib/math/private/bigfloat/mpfr.rkt:616:4 ---------------------------------------------------------------------- append-map [89] 4.7% simplify [57] 4.7% parse-loop12 [94] 18.7% hash-ref! [70] 35.0% map [60] 37.0% [94] 618(2.7%) 0(0.0%) parse-loop12 ...s/racket/match/compiler.rkt:410:15 loop [63] 39.6% f6 [76] 32.4% parse-loop12 [94] 18.7% simplify-node [9] 4.7% gather-additive-terms6 [98] 4.7% ---------------------------------------------------------------------- repeat [88] 100.0% [95] 216(1.0%) 216(1.0%) for-loop ...lock/herbie/src/core/localize.rkt:14:2 ---------------------------------------------------------------------- ->flonum [71] 20.4% ??? [83] 39.1% ??? [92] 40.4% [96] 4402(19.4%) 2892(12.7%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [99] 23.1% ??? [100] 11.2% ---------------------------------------------------------------------- bfsub [91] 100.0% [97] 930(4.1%) 930(4.1%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ---------------------------------------------------------------------- parse-loop12 [94] 100.0% [98] 202(0.9%) 202(0.9%) gather-additive-terms6 ...src/core/reduce.rkt:63:0 ---------------------------------------------------------------------- ??? [96] 100.0% [99] 1018(4.5%) 736(3.2%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [101] 27.7% ---------------------------------------------------------------------- ??? [96] 100.0% [100] 492(2.2%) 214(0.9%) ??? ...ects/racket/contract/private/prop.rkt:489:4 ??? [102] 56.5% ---------------------------------------------------------------------- ??? [99] 100.0% [101] 282(1.2%) 282(1.2%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 ---------------------------------------------------------------------- ??? [100] 100.0% [102] 278(1.2%) 278(1.2%) ??? ...lects/racket/contract/private/orc.rkt:73:14 ----------------------------------------------------------------------