Profiling results ----------------- Total cpu time observed: 16316ms (out of 16764ms) Number of samples taken: 71 (once every 230ms) ====================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ====================================================================== ??? [37] 100.0% [1] 16112(98.7%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [6] 100.0% ---------------------------------------------------------------------- ??? [37] 100.0% [2] 5254(32.2%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [8] 50.2% get-final-combination [10] 30.1% loop [7] 12.3% finalize-table! [11] 7.5% ---------------------------------------------------------------------- ??? [37] 100.0% [3] 2026(12.4%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [9] 71.2% for-loop [12] 18.3% iterate-egraph!5 [16] 10.6% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [4] 196(1.2%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [13] 100.0% ---------------------------------------------------------------------- loop [82] 100.0% [5] 196(1.2%) 0(0.0%) completely-simplify-alt ...erbie/src/glue.rkt:87:0 simplify-expr [9] 100.0% ---------------------------------------------------------------------- profile-thunk14 [1] 100.0% [6] 16112(98.7%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [37] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 5.6% ??? [37] 94.4% [7] 11502(70.5%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 loop [14] 50.4% make-exacts* [19] 34.4% loop [20] 15.1% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [8] 2638(16.2%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [15] 100.0% ---------------------------------------------------------------------- completely-simplify-alt [5] 12.0% simplify [3] 88.0% [9] 1638(10.0%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [16] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [10] 1580(9.7%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [17] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [11] 392(2.4%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [18] 100.0% ---------------------------------------------------------------------- simplify [3] 100.0% [12] 370(2.3%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [16] 100.0% ---------------------------------------------------------------------- ??? [4] 100.0% [13] 196(1.2%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [74] 100.0% ---------------------------------------------------------------------- loop [7] 100.0% [14] 5802(35.6%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [20] 53.4% make-exacts* [19] 26.0% eval-prog [71] 20.6% ---------------------------------------------------------------------- for-loop [8] 100.0% [15] 2638(16.2%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [22] 76.8% finalize-iter! [24] 15.1% gen-rewrites! [25] 8.1% ---------------------------------------------------------------------- simplify [3] 9.6% for-loop [12] 16.7% simplify-expr [9] 73.7% [16] 2222(13.6%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [21] 91.3% map-enodes [27] 8.7% ---------------------------------------------------------------------- get-final-combination [10] 100.0% [17] 1580(9.7%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [23] 100.0% ---------------------------------------------------------------------- finalize-table! [11] 100.0% [18] 392(2.4%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 loop [82] 50.0% for-loop [26] 50.0% ---------------------------------------------------------------------- loop [14] 27.6% loop [7] 72.4% [19] 5468(33.5%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [28] 57.2% loop [82] 42.8% ---------------------------------------------------------------------- loop [7] 36.0% loop [14] 64.0% [20] 4838(29.7%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [28] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [16] 100.0% [21] 2028(12.4%) 0(0.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [30] 73.9% loop [32] 26.1% ---------------------------------------------------------------------- run-iter! [15] 100.0% [22] 2026(12.4%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [29] 100.0% ---------------------------------------------------------------------- split-table [17] 100.0% [23] 1580(9.7%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [31] 85.2% debug-print [34] 14.8% ---------------------------------------------------------------------- run-iter! [15] 100.0% [24] 398(2.4%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [33] 100.0% ---------------------------------------------------------------------- run-iter! [15] 100.0% [25] 214(1.3%) 0(0.0%) gen-rewrites! ...ock/herbie/src/mainloop.rkt:148:0 for-loop [35] 100.0% ---------------------------------------------------------------------- post-process [18] 100.0% [26] 196(1.2%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:119:17 append-map [36] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [16] 100.0% [27] 194(1.2%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 loop [82] 100.0% ---------------------------------------------------------------------- make-exacts* [19] 39.3% loop [20] 60.7% [28] 7968(48.8%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [82] 97.3% ??? [85] 2.7% ---------------------------------------------------------------------- simplify! [22] 100.0% [29] 2026(12.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [37] 100.0% ---------------------------------------------------------------------- for-loop [30] 50.0% one-iter [21] 50.0% [30] 1498(9.2%) 758(4.6%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [30] 50.0% match-e [39] 24.7% ---------------------------------------------------------------------- infer-splitpoints4 [23] 100.0% [31] 1346(8.2%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [38] 100.0% ---------------------------------------------------------------------- one-iter [21] 100.0% [32] 530(3.2%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [40] 100.0% ---------------------------------------------------------------------- finalize-iter! [24] 100.0% [33] 398(2.4%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 atab-add-altns [43] 50.8% for-loop [45] 49.2% ---------------------------------------------------------------------- infer-splitpoints4 [23] 100.0% [34] 234(1.4%) 0(0.0%) debug-print ...ztatlock/herbie/src/debug.rkt:107:0 for-loop [41] 100.0% ---------------------------------------------------------------------- gen-rewrites! [25] 100.0% [35] 214(1.3%) 0(0.0%) for-loop ...tatlock/herbie/src/mainloop.rkt:153:11 ??? [42] 100.0% ---------------------------------------------------------------------- for-loop [26] 100.0% [36] 196(1.2%) 0(0.0%) append-map ...acket/collects/racket/list.rkt:565:2 taylor-alt [44] 100.0% ---------------------------------------------------------------------- for-loop [29] 4.2% run [6] 47.9% [37] 16112(98.7%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 47.9% loop [7] 33.7% run-improve58 [2] 14.2% simplify [3] 4.2% ---------------------------------------------------------------------- option-on-expr [31] 100.0% [38] 1346(8.2%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [46] 100.0% ---------------------------------------------------------------------- for-loop [30] 100.0% [39] 740(4.5%) 392(2.4%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [53] 23.5% for-loop [54] 23.5% ---------------------------------------------------------------------- loop [32] 100.0% [40] 530(3.2%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 merge-egraph-nodes! [48] 66.4% for-loop [52] 33.6% ---------------------------------------------------------------------- debug-print [34] 100.0% [41] 234(1.4%) 0(0.0%) for-loop /home/ztatlock/herbie/src/debug.rkt:113:2 write-proc [49] 100.0% ---------------------------------------------------------------------- for-loop [35] 100.0% [42] 214(1.3%) 0(0.0%) ??? /home/ztatlock/herbie/src/alternative.rkt:90:0 rewriter [50] 100.0% ---------------------------------------------------------------------- ??? [33] 100.0% [43] 202(1.2%) 0(0.0%) atab-add-altns ...rbie/src/core/alt-table.rkt:50:0 atab-add-altn [47] 100.0% ---------------------------------------------------------------------- append-map [36] 100.0% [44] 196(1.2%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [51] 100.0% ---------------------------------------------------------------------- ??? [33] 100.0% [45] 196(1.2%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [47] 100.0% ---------------------------------------------------------------------- sort-context-on-expr [38] 100.0% [46] 1346(8.2%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [55] 55.9% loop [62] 44.1% ---------------------------------------------------------------------- for-loop [45] 49.2% atab-add-altns [43] 50.8% [47] 398(2.4%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 loop [82] 50.8% best-and-tied-at-points [59] 49.2% ---------------------------------------------------------------------- merge-egraph-nodes! [48] 25.0% apply-match [40] 75.0% [48] 352(2.2%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [56] 75.0% merge-egraph-nodes! [48] 25.0% ---------------------------------------------------------------------- for-loop [41] 100.0% [49] 234(1.4%) 234(1.4%) write-proc ...lock/herbie/src/alternative.rkt:22:9 ---------------------------------------------------------------------- matcher [64] 50.0% ??? [42] 50.0% [50] 214(1.3%) 0(0.0%) rewriter ...lock/herbie/src/core/matcher.rkt:123:2 for-loop [58] 50.0% *rules* [57] 50.0% ---------------------------------------------------------------------- taylor-alt [44] 100.0% [51] 196(1.2%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [60] 100.0% ---------------------------------------------------------------------- apply-match [40] 100.0% [52] 178(1.1%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 substitute-e [61] 100.0% ---------------------------------------------------------------------- match-e [39] 100.0% [53] 174(1.1%) 174(1.1%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 ---------------------------------------------------------------------- match-e [39] 100.0% [54] 174(1.1%) 174(1.1%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 ---------------------------------------------------------------------- sort [46] 41.8% copying-mergesort [55] 58.2% [55] 752(4.6%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [55] 58.2% loop [62] 41.8% ---------------------------------------------------------------------- merge-egraph-nodes! [48] 100.0% [56] 352(2.2%) 0(0.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [63] 100.0% ---------------------------------------------------------------------- rewriter [50] 100.0% [57] 214(1.3%) 214(1.3%) *rules* ...tlock/herbie/src/syntax/rules.rkt:296:0 ---------------------------------------------------------------------- rewriter [50] 100.0% [58] 214(1.3%) 0(0.0%) for-loop ...ock/herbie/src/core/matcher.rkt:126:10 matcher [64] 100.0% ---------------------------------------------------------------------- atab-add-altn [47] 100.0% [59] 196(1.2%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [65] 100.0% ---------------------------------------------------------------------- for-loop [51] 100.0% [60] 196(1.2%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [66] 100.0% ---------------------------------------------------------------------- substitute-e [61] 50.0% for-loop [52] 50.0% [61] 178(1.1%) 178(1.1%) substitute-e ...ck/herbie/src/core/ematch.rkt:71:0 substitute-e [61] 50.0% ---------------------------------------------------------------------- sort [46] 44.1% copying-mergesort [55] 55.9% [62] 1346(8.2%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [67] 100.0% ---------------------------------------------------------------------- update-leader! [56] 100.0% [63] 352(2.2%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [68] 100.0% ---------------------------------------------------------------------- matcher [64] 50.0% for-loop [58] 50.0% [64] 214(1.3%) 0(0.0%) matcher ...tlock/herbie/src/core/matcher.rkt:159:2 matcher [64] 50.0% rewriter [50] 50.0% ---------------------------------------------------------------------- best-and-tied-at-points [59] 100.0% [65] 196(1.2%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [69] 100.0% ---------------------------------------------------------------------- location-do [60] 100.0% [66] 196(1.2%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [70] 100.0% ---------------------------------------------------------------------- loop [62] 100.0% [67] 1346(8.2%) 0(0.0%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [71] 100.0% ---------------------------------------------------------------------- for-loop [63] 100.0% [68] 352(2.2%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [72] 100.0% ---------------------------------------------------------------------- errors [65] 100.0% [69] 196(1.2%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [85] 100.0% ---------------------------------------------------------------------- approximate9 [66] 100.0% [70] 196(1.2%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [74] 100.0% ---------------------------------------------------------------------- loop [14] 47.0% ??? [67] 53.0% [71] 2542(15.6%) 1346(8.2%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 inductor [73] 28.4% hash-ref! [74] 18.6% ---------------------------------------------------------------------- for-loop [68] 100.0% [72] 352(2.2%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [75] 100.0% ---------------------------------------------------------------------- eval-prog [71] 33.3% inductor [73] 66.7% [73] 722(4.4%) 0(0.0%) inductor .../ztatlock/herbie/src/programs.rkt:73:2 inductor [73] 66.7% integer->bigfloat [76] 33.3% ---------------------------------------------------------------------- ??? [80] 7.3% loop [70] 7.3% for-loop [13] 14.6% eval-prog [71] 20.6% loop [82] 50.2% [74] 670(4.1%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [78] 50.2% bigfloat-hash [77] 20.6% ??? [4] 14.6% ??? [80] 7.3% simplify [81] 7.3% ---------------------------------------------------------------------- hash-update! [72] 100.0% [75] 352(2.2%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [79] 100.0% ---------------------------------------------------------------------- inductor [73] 100.0% [76] 722(4.4%) 722(4.4%) integer->bigfloat ...ivate/bigfloat/mpfr.rkt:399:0 ---------------------------------------------------------------------- hash-ref! [74] 100.0% [77] 474(2.9%) 232(1.4%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 bfcanonicalize [83] 51.1% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [78] 474(2.9%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 loop [82] 100.0% ---------------------------------------------------------------------- ??? [75] 100.0% [79] 352(2.2%) 176(1.1%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 update-en-expr [84] 50.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [80] 196(1.2%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [74] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [81] 196(1.2%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 parse-loop50 [88] 100.0% ---------------------------------------------------------------------- make-exacts* [19] 0.0% map-enodes [27] 0.6% post-process [18] 0.6% parse-loop50 [88] 0.9% atab-add-altn [47] 1.8% map [28] 1.9% ??? [78] 3.6% loop [82] 90.6% [82] 11352(69.6%) 242(1.5%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [82] 90.6% hash-ref! [74] 3.6% ??? [85] 1.9% loop [87] 1.8% parse-loop50 [88] 0.9% completely-simplify-alt [5] 0.6% for-loop [89] 0.6% ->flonum [86] 0.0% ---------------------------------------------------------------------- bigfloat-hash [77] 100.0% [83] 242(1.5%) 242(1.5%) bfcanonicalize .../private/bigfloat/mpfr.rkt:155:0 ---------------------------------------------------------------------- for-loop [79] 100.0% [84] 176(1.1%) 176(1.1%) update-en-expr ...herbie/src/core/egraph.rkt:211:0 ---------------------------------------------------------------------- for-loop [69] 2.0% map [28] 2.2% loop [82] 95.9% [85] 10010(61.4%) 636(3.9%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [90] 81.5% ??? [100] 5.2% real->bigfloat [91] 4.9% new [92] 2.2% ---------------------------------------------------------------------- loop [82] 100.0% [86] 250(1.5%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [102] 100.0% ---------------------------------------------------------------------- loop [82] 1.1% loop [87] 98.9% [87] 202(1.2%) 202(1.2%) loop ...ket/collects/racket/private/list.rkt:82:16 loop [87] 98.9% ---------------------------------------------------------------------- loop [82] 25.0% simplify [81] 25.0% parse-loop50 [88] 50.0% [88] 196(1.2%) 196(1.2%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 parse-loop50 [88] 50.0% loop [82] 25.0% ---------------------------------------------------------------------- loop [82] 100.0% [89] 194(1.2%) 194(1.2%) for-loop ...ock/herbie/src/core/simplify.rkt:161:2 ---------------------------------------------------------------------- ??? [85] 100.0% [90] 8154(50.0%) 400(2.5%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [97] 57.0% bffma [93] 30.9% ...ow-val-first.rkt:357:18 [96] 4.8% ??? [94] 2.4% ---------------------------------------------------------------------- ??? [85] 100.0% [91] 486(3.0%) 486(3.0%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ---------------------------------------------------------------------- ??? [85] 100.0% [92] 216(1.3%) 216(1.3%) new ...cket/contract/private/case-arrow.rkt:227:53 ---------------------------------------------------------------------- ??? [90] 100.0% [93] 2518(15.4%) 0(0.0%) bffma ...atlock/herbie/src/syntax/syntax.rkt:122:0 bf* [95] 83.5% ...ow-val-first.rkt:357:18 [96] 16.5% ---------------------------------------------------------------------- ??? [90] 100.0% [94] 196(1.2%) 196(1.2%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ---------------------------------------------------------------------- bffma [93] 100.0% [95] 2102(12.9%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [97] 100.0% ---------------------------------------------------------------------- ??? [90] 48.5% bffma [93] 51.5% [96] 808(5.0%) 0(0.0%) ...ow-val-first.rkt:357:18 (unknown source) ??? [98] 100.0% ---------------------------------------------------------------------- bf* [95] 31.1% ??? [90] 68.9% [97] 6750(41.4%) 728(4.5%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [99] 67.1% bfexp [101] 12.5% ??? [102] 9.6% ---------------------------------------------------------------------- ...ow-val-first.rkt:357:18 [96]100.0% [98] 808(5.0%) 392(2.4%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [100] 51.5% ---------------------------------------------------------------------- ??? [97] 100.0% [99] 4532(27.8%) 3674(22.5%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [103] 18.9% ---------------------------------------------------------------------- ??? [98] 44.5% ??? [85] 55.5% [100] 934(5.7%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [102] 100.0% ---------------------------------------------------------------------- ??? [97] 100.0% [101] 842(5.2%) 0(0.0%) bfexp ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [103] 100.0% ---------------------------------------------------------------------- ->flonum [86] 13.6% ??? [97] 35.4% ??? [100] 51.0% [102] 1832(11.2%) 678(4.2%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [104] 63.0% ---------------------------------------------------------------------- bfexp [101] 49.5% bfmul [99] 50.5% [103] 1700(10.4%) 1700(10.4%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ---------------------------------------------------------------------- ??? [102] 100.0% [104] 1154(7.1%) 920(5.6%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [105] 20.3% ---------------------------------------------------------------------- ??? [104] 100.0% [105] 234(1.4%) 234(1.4%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 ----------------------------------------------------------------------