Profiling results ----------------- Total cpu time observed: 15680ms (out of 16020ms) Number of samples taken: 67 (once every 234ms) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [15] 100.0% [1] 14872(94.8%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [8] 100.0% ----------------------------------------------------------------------- ??? [15] 100.0% [2] 4986(31.8%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [9] 46.7% iterate-egraph!5 [16] 33.2% for-loop [10] 20.1% ----------------------------------------------------------------------- hash-ref! [83] 100.0% [3] 844(5.4%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [11] 100.0% ----------------------------------------------------------------------- hash-ref! [83] 100.0% [4] 428(2.7%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:392:23 for-loop [12] 100.0% ----------------------------------------------------------------------- hash-ref! [83] 100.0% [5] 214(1.4%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [13] 100.0% ----------------------------------------------------------------------- loop [89] 100.0% [6] 206(1.3%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [83] 50.0% map [51] 50.0% ----------------------------------------------------------------------- hash-ref! [83] 100.0% [7] 202(1.3%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:322:33 for-loop [14] 100.0% ----------------------------------------------------------------------- profile-thunk14 [1] 98.6% [8] 15080(96.2%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [15] 100.0% ----------------------------------------------------------------------- simplify [2] 100.0% [9] 2328(14.8%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [16] 100.0% ----------------------------------------------------------------------- simplify [2] 100.0% [10] 1004(6.4%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [16] 80.1% loop [20] 19.9% ----------------------------------------------------------------------- ??? [3] 100.0% [11] 844(5.4%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [83] 100.0% ----------------------------------------------------------------------- ??? [4] 100.0% [12] 428(2.7%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:396:33 for-loop [18] 100.0% ----------------------------------------------------------------------- ??? [5] 100.0% [13] 214(1.4%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 ??? [19] 100.0% ----------------------------------------------------------------------- ??? [7] 100.0% [14] 202(1.3%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:324:46 simplify [17] 100.0% ----------------------------------------------------------------------- for-loop [52] 11.2% run [8] 44.1% [15] 15680(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 42.8% loop [25] 23.2% run-improve58 [21] 22.8% simplify [2] 11.2% ----------------------------------------------------------------------- for-loop [10] 16.8% simplify [2] 34.6% simplify-expr [9] 48.6% [16] 4786(30.5%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [22] 100.0% ----------------------------------------------------------------------- for-loop [14] 23.9% hash-ref! [83] 76.1% [17] 844(5.4%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 parse-loop12 [84] 50.7% f37 [23] 49.3% ----------------------------------------------------------------------- for-loop [12] 100.0% [18] 428(2.7%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:398:39 hash-ref! [83] 100.0% ----------------------------------------------------------------------- for-loop [13] 100.0% [19] 214(1.4%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:288:19 hash-ref! [83] 100.0% ----------------------------------------------------------------------- for-loop [10] 100.0% [20] 200(1.3%) 0(0.0%) loop ...tatlock/herbie/src/core/simplify.rkt:203:2 pass [24] 100.0% ----------------------------------------------------------------------- ??? [15] 100.0% [21] 8608(54.9%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [26] 75.0% get-final-combination [28] 22.5% loop [25] 2.4% ----------------------------------------------------------------------- iterate-egraph!5 [16] 100.0% [22] 4786(30.5%) 0(0.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [27] 73.3% loop [29] 26.7% ----------------------------------------------------------------------- simplify [17] 49.3% parse-loop12 [84] 50.7% [23] 844(5.4%) 202(1.3%) f37 ...t/collects/racket/match/compiler.rkt:499:40 map [51] 76.1% ----------------------------------------------------------------------- loop [20] 100.0% [24] 200(1.3%) 0(0.0%) pass ...tatlock/herbie/src/core/simplify.rkt:193:2 for-loop [30] 100.0% ----------------------------------------------------------------------- run-improve58 [21] 2.9% ??? [15] 97.1% [25] 7280(46.4%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [39] 45.7% loop [32] 36.3% loop [41] 15.1% filter-exacts [36] 2.9% ----------------------------------------------------------------------- run-improve58 [21] 100.0% [26] 6460(41.2%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [31] 100.0% ----------------------------------------------------------------------- for-loop [27] 47.1% one-iter [22] 52.9% [27] 3506(22.4%) 1242(7.9%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [27] 47.1% match-e [40] 32.3% ----------------------------------------------------------------------- run-improve58 [21] 100.0% [28] 1940(12.4%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [33] 89.1% extract-alt [35] 10.9% ----------------------------------------------------------------------- one-iter [22] 100.0% [29] 1280(8.2%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [34] 100.0% ----------------------------------------------------------------------- pass [24] 100.0% [30] 200(1.3%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:196:29 loop [37] 100.0% ----------------------------------------------------------------------- for-loop [26] 100.0% [31] 6460(41.2%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [38] 77.2% gen-series! [43] 13.1% finalize-iter! [44] 6.6% localize-error [49] 3.2% ----------------------------------------------------------------------- loop [25] 100.0% [32] 2642(16.8%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 make-exacts* [39] 54.4% loop [41] 45.6% ----------------------------------------------------------------------- get-final-combination [28] 100.0% [33] 1728(11.0%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [42] 100.0% ----------------------------------------------------------------------- loop [29] 100.0% [34] 1280(8.2%) 202(1.3%) apply-match .../herbie/src/core/simplify.rkt:122:2 match-e [40] 32.8% merge-egraph-nodes! [45] 18.9% substitute-e [46] 17.0% loop! [94] 15.5% ----------------------------------------------------------------------- get-final-combination [28] 100.0% [35] 212(1.4%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [47] 100.0% ----------------------------------------------------------------------- loop [25] 100.0% [36] 208(1.3%) 0(0.0%) filter-exacts ...tlock/herbie/src/points.rkt:108:0 for-loop [48] 100.0% ----------------------------------------------------------------------- for-loop [30] 100.0% [37] 200(1.3%) 0(0.0%) loop ...hare/racket/collects/racket/list.rkt:729:4 expression-cost [50] 100.0% ----------------------------------------------------------------------- run-iter! [31] 100.0% [38] 4986(31.8%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [52] 100.0% ----------------------------------------------------------------------- loop [32] 30.2% loop [25] 69.8% [39] 4766(30.4%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 loop [89] 53.4% map [51] 46.6% ----------------------------------------------------------------------- apply-match [34] 7.8% for-loop [62] 15.3% for-loop [27] 76.9% [40] 2684(17.1%) 1264(8.1%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [54] 41.8% for-loop [62] 14.8% ----------------------------------------------------------------------- loop [25] 47.8% loop [32] 52.2% [41] 2306(14.7%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [51] 100.0% ----------------------------------------------------------------------- split-table [33] 100.0% [42] 1728(11.0%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [53] 100.0% ----------------------------------------------------------------------- run-iter! [31] 100.0% [43] 844(5.4%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [55] 100.0% ----------------------------------------------------------------------- run-iter! [31] 100.0% [44] 424(2.7%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [56] 100.0% ----------------------------------------------------------------------- apply-match [34] 100.0% [45] 242(1.5%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [57] 100.0% ----------------------------------------------------------------------- apply-match [34] 100.0% [46] 218(1.4%) 0(0.0%) substitute-e ...ck/herbie/src/core/ematch.rkt:71:0 mk-enode! [58] 100.0% ----------------------------------------------------------------------- extract-alt [35] 100.0% [47] 212(1.4%) 0(0.0%) loop /home/ztatlock/herbie/src/common.rkt:86:2 composed [59] 100.0% ----------------------------------------------------------------------- filter-exacts [36] 100.0% [48] 208(1.3%) 208(1.3%) for-loop ...e/ztatlock/herbie/src/points.rkt:111:4 ----------------------------------------------------------------------- run-iter! [31] 100.0% [49] 206(1.3%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [83] 100.0% ----------------------------------------------------------------------- loop [37] 100.0% [50] 200(1.3%) 0(0.0%) expression-cost ...k/herbie/src/programs.rkt:212:0 compile [60] 100.0% ----------------------------------------------------------------------- parse-loop12 [84] 2.1% ??? [6] 3.8% f37 [23] 9.9% make-exacts* [39] 41.3% loop [41] 42.9% [51] 5374(34.3%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [89] 84.2% parse-loop12 [84] 11.9% ->flonum [93] 3.8% ----------------------------------------------------------------------- simplify! [38] 100.0% [52] 4986(31.8%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [15] 100.0% ----------------------------------------------------------------------- infer-splitpoints4 [42] 100.0% [53] 1728(11.0%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [61] 87.3% pick-errors [66] 12.7% ----------------------------------------------------------------------- match-e [40] 100.0% [54] 1224(7.8%) 202(1.3%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [62] 33.5% list-cartesian-product [65] 33.0% loop [89] 25.2% ----------------------------------------------------------------------- gen-series! [43] 100.0% [55] 844(5.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [63] 100.0% ----------------------------------------------------------------------- finalize-iter! [44] 100.0% [56] 424(2.7%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [64] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [45] 100.0% [57] 242(1.5%) 242(1.5%) update-leader! ...herbie/src/core/egraph.rkt:217:0 ----------------------------------------------------------------------- substitute-e [46] 100.0% [58] 218(1.4%) 218(1.4%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 ----------------------------------------------------------------------- loop [47] 100.0% [59] 212(1.4%) 0(0.0%) composed ...ollects/racket/private/list.rkt:321:16 errors [76] 100.0% ----------------------------------------------------------------------- expression-cost [50] 100.0% [60] 200(1.3%) 0(0.0%) compile .../ztatlock/herbie/src/programs.rkt:189:0 hash-ref! [83] 100.0% ----------------------------------------------------------------------- option-on-expr [53] 100.0% [61] 1508(9.6%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [67] 100.0% ----------------------------------------------------------------------- match-e [40] 49.1% for-loop [54] 50.9% [62] 1218(7.8%) 396(2.5%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [40] 67.5% ----------------------------------------------------------------------- for-loop [55] 100.0% [63] 844(5.4%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [68] 100.0% ----------------------------------------------------------------------- ??? [56] 100.0% [64] 424(2.7%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [69] 100.0% ----------------------------------------------------------------------- for-loop [54] 100.0% [65] 404(2.6%) 404(2.6%) list-cartesian-product ...src/core/ematch.rkt:20:0 ----------------------------------------------------------------------- option-on-expr [53] 100.0% [66] 220(1.4%) 0(0.0%) pick-errors ...k/herbie/src/core/regimes.rkt:173:0 for-loop [70] 100.0% ----------------------------------------------------------------------- sort-context-on-expr [61] 100.0% [67] 1508(9.6%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [71] 57.3% loop [74] 42.7% ----------------------------------------------------------------------- taylor-alt [63] 100.0% [68] 844(5.4%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [72] 100.0% ----------------------------------------------------------------------- for-loop [64] 100.0% [69] 424(2.7%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [73] 100.0% ----------------------------------------------------------------------- pick-errors [66] 100.0% [70] 220(1.4%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:176:4 eval-prog [82] 100.0% ----------------------------------------------------------------------- sort [67] 37.8% copying-mergesort [71] 62.2% [71] 864(5.5%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [71] 62.2% loop [74] 25.6% jloop [77] 12.2% ----------------------------------------------------------------------- location-do [72] 37.3% for-loop [68] 62.7% [72] 844(5.4%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [75] 62.7% location-do [72] 37.3% ----------------------------------------------------------------------- atab-add-altn [69] 100.0% [73] 424(2.7%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [76] 52.4% for-loop [78] 47.6% ----------------------------------------------------------------------- copying-mergesort [71] 40.7% sort [67] 59.3% [74] 1086(6.9%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [79] 100.0% ----------------------------------------------------------------------- location-do [72] 100.0% [75] 844(5.4%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [80] 100.0% ----------------------------------------------------------------------- composed [59] 48.8% best-and-tied-at-points [73] 51.2% [76] 434(2.8%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [81] 51.2% eval-prog [82] 48.8% ----------------------------------------------------------------------- copying-mergesort [71] 100.0% [77] 422(2.7%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [79] 100.0% ----------------------------------------------------------------------- best-and-tied-at-points [73] 100.0% [78] 202(1.3%) 202(1.3%) for-loop ...k/herbie/src/core/alt-table.rkt:124:16 ----------------------------------------------------------------------- jloop [77] 28.0% loop [74] 72.0% [79] 1508(9.6%) 0(0.0%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [82] 100.0% ----------------------------------------------------------------------- approximate9 [75] 100.0% [80] 844(5.4%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [83] 100.0% ----------------------------------------------------------------------- errors [76] 100.0% [81] 222(1.4%) 222(1.4%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ----------------------------------------------------------------------- errors [76] 10.9% for-loop [70] 11.3% ??? [79] 77.7% [82] 1940(12.4%) 1480(9.4%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 ??? [86] 12.4% go [87] 11.3% ----------------------------------------------------------------------- ??? [19] 4.3% for-loop [18] 6.8% ??? [88] 8.0% compile [60] 8.0% ??? [6] 8.2% localize-error [49] 8.2% ??? [85] 15.2% loop [80] 15.2% for-loop [11] 26.1% [83] 1250(8.0%) 200(1.3%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [3] 26.1% parse-loop12 [84] 16.5% ??? [85] 15.2% simplify [17] 11.1% ??? [88] 8.0% ??? [4] 6.8% ??? [5] 4.3% ??? [7] 4.0% ----------------------------------------------------------------------- loop [89] 12.6% simplify [17] 13.3% parse-loop12 [84] 18.6% hash-ref! [83] 24.3% map [51] 31.2% [84] 848(5.4%) 420(2.7%) parse-loop12 ...s/racket/match/compiler.rkt:410:15 loop [89] 36.9% parse-loop12 [84] 18.6% f37 [23] 13.3% map [51] 5.2% select-handler/no-breaks [91] 5.2% ----------------------------------------------------------------------- hash-ref! [83] 100.0% [85] 844(5.4%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [83] 100.0% ----------------------------------------------------------------------- eval-prog [82] 100.0% [86] 240(1.5%) 0(0.0%) ??? ...collects/racket/private/qq-and-or.rkt:155:9 ??? [90] 100.0% ----------------------------------------------------------------------- eval-prog [82] 100.0% [87] 220(1.4%) 220(1.4%) go .../collects/racket/private/qq-and-or.rkt:50:20 ----------------------------------------------------------------------- hash-ref! [83] 100.0% [88] 200(1.3%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 hash-ref! [83] 100.0% ----------------------------------------------------------------------- make-exacts* [39] 0.1% loop! [94] 1.2% parse-loop12 [84] 1.4% for-loop [54] 3.3% map [51] 6.3% loop [89] 87.7% [89] 8108(51.7%) 418(2.7%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [89] 87.7% ??? [92] 6.1% parse-loop12 [84] 1.3% loop! [94] 1.2% ->flonum [93] 0.3% ??? [6] 0.1% ----------------------------------------------------------------------- ??? [86] 100.0% [90] 240(1.5%) 240(1.5%) ??? ...ollects/racket/private/qq-and-or.rkt:164:21 ----------------------------------------------------------------------- parse-loop12 [84] 100.0% [91] 222(1.4%) 222(1.4%) select-handler/no-breaks .../more-scheme.rkt:163:2 ----------------------------------------------------------------------- loop [89] 100.0% [92] 6838(43.6%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [95] 74.5% real->bigfloat [96] 22.3% ??? [102] 3.2% ----------------------------------------------------------------------- map [51] 46.8% loop [89] 53.2% [93] 440(2.8%) 234(1.5%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [103] 46.8% ----------------------------------------------------------------------- apply-match [34] 33.3% loop [89] 66.7% [94] 198(1.3%) 198(1.3%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 loop [89] 66.7% ----------------------------------------------------------------------- ??? [92] 100.0% [95] 5092(32.5%) 0(0.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 bf* [97] 51.3% ??? [99] 44.2% ...higher-order.rkt:373:33 [98] 4.5% ----------------------------------------------------------------------- ??? [92] 100.0% [96] 1524(9.7%) 1292(8.2%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [104] 15.2% ----------------------------------------------------------------------- ??? [95] 100.0% [97] 2612(16.7%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [99] 100.0% ----------------------------------------------------------------------- ??? [95] 100.0% [98] 230(1.5%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [100] 100.0% ----------------------------------------------------------------------- ??? [95] 46.3% bf* [97] 53.7% [99] 4862(31.0%) 954(6.1%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [101] 65.6% ??? [103] 14.8% ----------------------------------------------------------------------- ...higher-order.rkt:373:33 [98]100.0% [100] 230(1.5%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [102] 100.0% ----------------------------------------------------------------------- ??? [99] 100.0% [101] 3188(20.3%) 2168(13.8%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [104] 32.0% ----------------------------------------------------------------------- ??? [92] 49.1% ??? [100] 50.9% [102] 452(2.9%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [103] 100.0% ----------------------------------------------------------------------- ->flonum [93] 14.9% ??? [102] 32.8% ??? [99] 52.2% [103] 1378(8.8%) 1378(8.8%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ----------------------------------------------------------------------- real->bigfloat [96] 18.5% bfmul [101] 81.5% [104] 1252(8.0%) 1252(8.0%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 -----------------------------------------------------------------------