Profiling results ----------------- Total cpu time observed: 22720ms (out of 23512ms) Number of samples taken: 95 (once every 239ms) ====================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ====================================================================== ??? [28] 100.0% [1] 22520(99.1%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [5] 100.0% ---------------------------------------------------------------------- ??? [28] 100.0% [2] 11558(50.9%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 get-final-combination [6] 72.2% for-loop [7] 15.9% finalize-table! [8] 10.2% setup-prog [9] 1.7% ---------------------------------------------------------------------- copying-mergesort [48] 100.0% [3] 2362(10.4%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [64] 100.0% ---------------------------------------------------------------------- loop [68] 100.0% [4] 712(3.1%) 0(0.0%) completely-simplify-alt ...erbie/src/glue.rkt:87:0 simplify-expr [23] 100.0% ---------------------------------------------------------------------- profile-thunk14 [1] 100.0% [5] 22520(99.1%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [28] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [6] 8340(36.7%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [10] 97.1% extract-alt [13] 2.9% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [7] 1842(8.1%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [11] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [8] 1184(5.2%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [12] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [9] 192(0.8%) 0(0.0%) setup-prog /home/ztatlock/herbie/src/glue.rkt:46:0 simplify-alt [14] 100.0% ---------------------------------------------------------------------- get-final-combination [6] 100.0% [10] 8102(35.7%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [15] 88.3% ??? [18] 11.7% ---------------------------------------------------------------------- for-loop [7] 100.0% [11] 1842(8.1%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [17] 63.4% localize-error [19] 26.0% gen-series! [21] 10.6% ---------------------------------------------------------------------- finalize-table! [8] 100.0% [12] 1184(5.2%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 loop [68] 80.1% for-loop [20] 19.9% ---------------------------------------------------------------------- get-final-combination [6] 100.0% [13] 238(1.0%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [68] 100.0% ---------------------------------------------------------------------- setup-prog [9] 100.0% [14] 192(0.8%) 0(0.0%) simplify-alt .../ztatlock/herbie/src/glue.rkt:84:0 simplify [16] 100.0% ---------------------------------------------------------------------- split-table [10] 100.0% [15] 7154(31.5%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [22] 76.7% loop [68] 23.3% ---------------------------------------------------------------------- simplify-alt [14] 12.0% loop [68] 14.9% ??? [28] 73.1% [16] 1598(7.0%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [23] 88.0% iterate-egraph!5 [30] 12.0% ---------------------------------------------------------------------- run-iter! [11] 100.0% [17] 1168(5.1%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [24] 100.0% ---------------------------------------------------------------------- split-table [10] 100.0% [18] 948(4.2%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 split-atab [25] 100.0% ---------------------------------------------------------------------- loop [68] 33.1% run-iter! [11] 66.9% [19] 714(3.1%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [74] 100.0% ---------------------------------------------------------------------- post-process [12] 100.0% [20] 236(1.0%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:119:17 append-map [26] 100.0% ---------------------------------------------------------------------- run-iter! [11] 100.0% [21] 196(0.9%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [27] 100.0% ---------------------------------------------------------------------- loop [68] 23.3% infer-splitpoints4 [15] 76.7% [22] 7154(31.5%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [29] 90.8% pick-errors [32] 6.2% err-lsts->split-indices [35] 3.0% ---------------------------------------------------------------------- completely-simplify-alt [4] 33.6% simplify [16] 66.4% [23] 2118(9.3%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [30] 88.9% loop [34] 11.1% ---------------------------------------------------------------------- simplify! [17] 100.0% [24] 1168(5.1%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [28] 100.0% ---------------------------------------------------------------------- ??? [18] 100.0% [25] 948(4.2%) 0(0.0%) split-atab ...k/herbie/src/core/alt-table.rkt:74:0 for-loop [31] 100.0% ---------------------------------------------------------------------- for-loop [20] 100.0% [26] 236(1.0%) 0(0.0%) append-map ...acket/collects/racket/list.rkt:565:2 taylor-alt [33] 100.0% ---------------------------------------------------------------------- gen-series! [21] 100.0% [27] 196(0.9%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [33] 100.0% ---------------------------------------------------------------------- for-loop [24] 1.7% run [5] 49.1% [28] 22520(99.1%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 49.1% run-improve58 [2] 24.8% loop [36] 24.3% simplify [16] 1.7% ---------------------------------------------------------------------- option-on-expr [22] 100.0% [29] 6494(28.6%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [37] 96.4% for-loop [45] 3.6% ---------------------------------------------------------------------- simplify [16] 9.3% simplify-expr [23] 90.7% [30] 2074(9.1%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [38] 100.0% ---------------------------------------------------------------------- split-atab [25] 100.0% [31] 948(4.2%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:75:2 for-loop [39] 50.0% for-loop [42] 25.1% for-loop [44] 24.9% ---------------------------------------------------------------------- option-on-expr [22] 100.0% [32] 442(1.9%) 0(0.0%) pick-errors ...k/herbie/src/core/regimes.rkt:173:0 for-loop [40] 100.0% ---------------------------------------------------------------------- for-loop [27] 45.4% append-map [26] 54.6% [33] 432(1.9%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [41] 100.0% ---------------------------------------------------------------------- simplify-expr [23] 100.0% [34] 236(1.0%) 0(0.0%) loop ...tatlock/herbie/src/core/simplify.rkt:203:2 pass [43] 100.0% ---------------------------------------------------------------------- option-on-expr [22] 100.0% [35] 218(1.0%) 0(0.0%) err-lsts->split-indices .../core/regimes.rkt:224:0 add-splitpoint [46] 100.0% ---------------------------------------------------------------------- ??? [28] 100.0% [36] 10962(48.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [56] 54.3% loop [47] 43.7% loop [58] 2.0% ---------------------------------------------------------------------- sort-context-on-expr [29] 100.0% [37] 6262(27.6%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [48] 71.1% loop [57] 28.9% ---------------------------------------------------------------------- iterate-egraph!5 [30] 100.0% [38] 2074(9.1%) 220(1.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [49] 78.0% loop [52] 11.4% ---------------------------------------------------------------------- for-loop [31] 100.0% [39] 474(2.1%) 0(0.0%) for-loop ...ck/herbie/src/core/alt-table.rkt:80:53 loop [50] 100.0% ---------------------------------------------------------------------- pick-errors [32] 100.0% [40] 442(1.9%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:176:4 eval-prog [69] 100.0% ---------------------------------------------------------------------- taylor-alt [33] 100.0% [41] 432(1.9%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [51] 100.0% ---------------------------------------------------------------------- for-loop [31] 100.0% [42] 238(1.0%) 0(0.0%) for-loop ...ck/herbie/src/core/alt-table.rkt:76:45 ??? [59] 100.0% ---------------------------------------------------------------------- loop [34] 100.0% [43] 236(1.0%) 0(0.0%) pass ...tatlock/herbie/src/core/simplify.rkt:193:2 for-loop [53] 100.0% ---------------------------------------------------------------------- for-loop [31] 100.0% [44] 236(1.0%) 0(0.0%) for-loop ...ck/herbie/src/core/alt-table.rkt:86:30 ??? [59] 100.0% ---------------------------------------------------------------------- sort-context-on-expr [29] 100.0% [45] 232(1.0%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:51:19 ??? [54] 100.0% ---------------------------------------------------------------------- err-lsts->split-indices [35] 100.0% [46] 218(1.0%) 0(0.0%) add-splitpoint ...erbie/src/core/regimes.rkt:237:2 for-loop [55] 100.0% ---------------------------------------------------------------------- loop [36] 100.0% [47] 4792(21.1%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [58] 68.0% make-exacts* [56] 27.5% eval-prog [69] 4.5% ---------------------------------------------------------------------- sort [37] 45.4% copying-mergesort [48] 54.6% [48] 4450(19.6%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [48] 54.6% loop [57] 32.1% jloop [3] 13.3% ---------------------------------------------------------------------- for-loop [49] 50.0% one-iter [38] 50.0% [49] 1618(7.1%) 238(1.0%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [49] 50.0% match-e [65] 42.6% ---------------------------------------------------------------------- for-loop [39] 100.0% [50] 474(2.1%) 0(0.0%) loop ...ket/collects/racket/private/list.rkt:264:4 ??? [59] 100.0% ---------------------------------------------------------------------- location-do [51] 36.4% for-loop [41] 63.6% [51] 432(1.9%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [60] 63.6% location-do [51] 36.4% ---------------------------------------------------------------------- one-iter [38] 100.0% [52] 236(1.0%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [61] 100.0% ---------------------------------------------------------------------- pass [43] 100.0% [53] 236(1.0%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:196:29 argmin [62] 100.0% ---------------------------------------------------------------------- for-loop [45] 100.0% [54] 232(1.0%) 232(1.0%) ??? ...ket/collects/racket/private/for.rkt:1150:14 ---------------------------------------------------------------------- add-splitpoint [46] 100.0% [55] 218(1.0%) 218(1.0%) for-loop ...lock/herbie/src/core/regimes.rkt:239:4 ---------------------------------------------------------------------- loop [47] 18.1% loop [36] 81.9% [56] 7270(32.0%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [63] 54.7% loop [68] 45.3% ---------------------------------------------------------------------- sort [37] 46.5% copying-mergesort [48] 53.5% [57] 3900(17.2%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [64] 100.0% ---------------------------------------------------------------------- loop [36] 6.3% loop [47] 93.7% [58] 3476(15.3%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [63] 100.0% ---------------------------------------------------------------------- for-loop [44] 24.9% for-loop [42] 25.1% loop [50] 50.0% [59] 948(4.2%) 0(0.0%) ??? .../ztatlock/herbie/src/core/regimes.rkt:291:8 eval-prog [69] 100.0% ---------------------------------------------------------------------- location-do [51] 100.0% [60] 432(1.9%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [67] 54.6% f160 [84] 45.4% ---------------------------------------------------------------------- loop [52] 100.0% [61] 236(1.0%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 match-e [65] 100.0% ---------------------------------------------------------------------- for-loop [53] 100.0% [62] 236(1.0%) 0(0.0%) argmin ...re/racket/collects/racket/list.rkt:743:0 expression-cost [66] 100.0% ---------------------------------------------------------------------- f160 [84] 3.1% loop [58] 45.2% make-exacts* [56] 51.7% [63] 7686(33.8%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [68] 96.9% ??? [71] 3.1% ---------------------------------------------------------------------- jloop [3] 37.7% loop [57] 62.3% [64] 6262(27.6%) 708(3.1%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [69] 88.7% ---------------------------------------------------------------------- for-loop [79] 7.3% apply-match [61] 14.6% for-loop [49] 78.1% [65] 1616(7.1%) 906(4.0%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [70] 36.6% loop [68] 7.3% ---------------------------------------------------------------------- argmin [62] 100.0% [66] 236(1.0%) 0(0.0%) expression-cost ...k/herbie/src/programs.rkt:212:0 compile [72] 100.0% ---------------------------------------------------------------------- approximate9 [60] 100.0% [67] 236(1.0%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [74] 100.0% ---------------------------------------------------------------------- ??? [73] 0.0% make-exacts* [56] 0.1% parse-loop12 [82] 0.1% match-e [65] 0.3% post-process [12] 0.8% ??? [83] 0.9% extract-alt [13] 1.7% map [63] 2.7% infer-splitpoints4 [15] 11.8% loop [68] 81.5% [68] 14050(61.8%) 498(2.2%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [68] 81.5% option-on-expr [22] 11.8% ??? [73] 2.7% simplify [16] 1.7% hash-ref! [74] 0.9% completely-simplify-alt [4] 0.7% ...higher-order.rkt:373:33 [89] 0.1% localize-error [19] 0.1% real->bigfloat [81] 0.0% ->flonum [77] 0.0% ---------------------------------------------------------------------- loop [47] 3.0% for-loop [40] 6.2% ??? [59] 13.2% ??? [64] 77.6% [69] 7160(31.5%) 6230(27.4%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 ??? [75] 6.6% inductor [78] 3.3% hash-ref! [74] 3.0% ---------------------------------------------------------------------- match-e [65] 100.0% [70] 710(3.1%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 list-cartesian-product [76] 66.8% for-loop [79] 33.2% ---------------------------------------------------------------------- map [63] 100.0% [71] 236(1.0%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [74] 100.0% ---------------------------------------------------------------------- expression-cost [66] 100.0% [72] 236(1.0%) 0(0.0%) compile .../ztatlock/herbie/src/programs.rkt:189:0 hash-ref! [74] 100.0% ---------------------------------------------------------------------- loop [68] 100.0% [73] 10484(46.1%) 486(2.1%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [80] 52.9% real->bigfloat [81] 21.0% ??? [95] 14.5% loop [68] 7.0% ---------------------------------------------------------------------- eval-prog [69] 3.9% ??? [83] 8.4% compile [72] 8.4% ??? [86] 8.4% loop [67] 8.4% ??? [71] 11.2% loop [68] 11.6% localize-error [19] 39.7% [74] 1402(6.2%) 472(2.1%) hash-ref! ...racket/private/more-scheme.rkt:373:13 parse-loop12 [82] 39.7% ??? [83] 20.0% f160 [84] 11.2% ??? [86] 8.4% bigfloat-hash [87] 3.9% ---------------------------------------------------------------------- eval-prog [69] 100.0% [75] 476(2.1%) 238(1.0%) ??? ...collects/racket/private/qq-and-or.rkt:155:9 ??? [85] 50.0% ---------------------------------------------------------------------- list-cartesian-product [76] 50.0% for-loop [70] 50.0% [76] 474(2.1%) 474(2.1%) list-cartesian-product ...src/core/ematch.rkt:20:0 list-cartesian-product [76] 50.0% ---------------------------------------------------------------------- loop [68] 100.0% [77] 262(1.2%) 262(1.2%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ---------------------------------------------------------------------- eval-prog [69] 25.0% inductor [78] 75.0% [78] 238(1.0%) 238(1.0%) inductor .../ztatlock/herbie/src/programs.rkt:73:2 inductor [78] 75.0% ---------------------------------------------------------------------- for-loop [70] 100.0% [79] 236(1.0%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [65] 100.0% ---------------------------------------------------------------------- ??? [73] 100.0% [80] 5542(24.4%) 272(1.2%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [92] 40.9% bf* [88] 32.2% ...higher-order.rkt:373:33 [89] 17.0% bf<= [90] 5.1% ---------------------------------------------------------------------- loop [68] 17.6% ??? [73] 82.4% [81] 2674(11.8%) 1126(5.0%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [99] 57.9% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [82] 714(3.1%) 0(0.0%) parse-loop12 ...s/racket/match/compiler.rkt:410:15 loop [68] 66.4% ??? [92] 33.6% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [83] 452(2.0%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 hash-ref! [74] 52.2% loop [68] 47.8% ---------------------------------------------------------------------- f160 [84] 22.7% approximate9 [60] 22.7% hash-ref! [74] 54.6% [84] 432(1.9%) 0(0.0%) f160 .../collects/racket/match/compiler.rkt:499:40 map [63] 54.6% f160 [84] 22.7% taylor-invert [91] 22.7% ---------------------------------------------------------------------- ??? [75] 100.0% [85] 238(1.0%) 238(1.0%) ??? ...ollects/racket/private/qq-and-or.rkt:164:21 ---------------------------------------------------------------------- hash-ref! [74] 100.0% [86] 236(1.0%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:63:15 hash-ref! [74] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [87] 216(1.0%) 216(1.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 ---------------------------------------------------------------------- ??? [80] 100.0% [88] 1786(7.9%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [92] 100.0% ---------------------------------------------------------------------- loop [68] 33.5% ??? [80] 66.5% [89] 1414(6.2%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [93] 80.8% ??? [95] 19.2% ---------------------------------------------------------------------- ??? [80] 100.0% [90] 280(1.2%) 0(0.0%) bf<= ...h/private/bigfloat/bigfloat-mpfr.rkt:127:4 ??? [98] 100.0% ---------------------------------------------------------------------- f160 [84] 100.0% [91] 196(0.9%) 0(0.0%) taylor-invert .../herbie/src/core/taylor.rkt:312:0 first-nonzero-exp [94] 100.0% ---------------------------------------------------------------------- parse-loop12 [82] 5.6% bf* [88] 41.6% ??? [80] 52.8% [92] 4290(18.9%) 722(3.2%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfdiv [96] 54.0% ??? [98] 29.2% ---------------------------------------------------------------------- ...higher-order.rkt:373:33 [89]100.0% [93] 1142(5.0%) 234(1.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [95] 79.5% ---------------------------------------------------------------------- taylor-invert [91] 100.0% [94] 196(0.9%) 0(0.0%) first-nonzero-exp ...bie/src/core/taylor.rkt:260:0 simplify [97] 100.0% ---------------------------------------------------------------------- ...higher-order.rkt:373:33 [89] 10.1% ??? [93] 33.6% ??? [73] 56.3% [95] 2700(11.9%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [98] 100.0% ---------------------------------------------------------------------- ??? [92] 100.0% [96] 2316(10.2%) 1004(4.4%) bfdiv ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [99] 56.6% ---------------------------------------------------------------------- first-nonzero-exp [94] 100.0% [97] 196(0.9%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 debug7 [100] 100.0% ---------------------------------------------------------------------- bf<= [90] 6.6% ??? [92] 29.6% ??? [95] 63.8% [98] 4232(18.6%) 2248(9.9%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [101] 46.9% ---------------------------------------------------------------------- bfdiv [96] 45.9% real->bigfloat [81] 54.1% [99] 2860(12.6%) 2860(12.6%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ---------------------------------------------------------------------- simplify [97] 100.0% [100] 196(0.9%) 196(0.9%) debug7 /home/ztatlock/herbie/src/debug.rkt:102:0 ---------------------------------------------------------------------- ??? [98] 100.0% [101] 1984(8.7%) 984(4.3%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [102] 50.4% ---------------------------------------------------------------------- ??? [101] 100.0% [102] 1000(4.4%) 1000(4.4%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 ----------------------------------------------------------------------