Profiling results ----------------- Total cpu time observed: 138214ms (out of 140128ms) Number of samples taken: 357 (once every 387ms) (Hiding functions with self<1.0% and local<2.0%: 3 of 105 hidden) =========================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee =========================================================================== ??? [29] 100.0% [1] 136548(98.8%) 0(0.0%) profile-thunk16 ...t/pkgs/profile-lib/main.rkt:9:0 run [5] 100.0% --------------------------------------------------------------------------- ??? [89] 0.8% for-loop [98] 2.7% loop [84] 96.6% [2] 122946(89.0%) 2092(1.5%) ??? ...erbie/regime-testing/src/programs.rkt:156:4 ??? [6] 91.2% ??? [7] 6.8% ??? [12] 0.3% --------------------------------------------------------------------------- ??? [29] 100.0% [3] 6962(5.0%) 0(0.0%) run-improve50 ...me-testing/src/mainloop.rkt:235:0 for-loop [8] 53.8% loop [35] 32.4% prepare-points [36] 9.2% setup-alt-simplified [10] 4.6% --------------------------------------------------------------------------- ??? [12] 100.0% [4] 350(0.3%) 0(0.0%) approximate9 ...e-testing/src/core/taylor.rkt:12:0 loop [9] 100.0% --------------------------------------------------------------------------- profile-thunk16 [1] 99.3% [5] 137544(99.5%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:39:2 ??? [29] 100.0% --------------------------------------------------------------------------- ??? [2] 100.0% [6] 112110(81.1%) 10670(7.7%) ??? ...acket/collects/racket/private/kw.rkt:444:14 ??? [87] 68.4% bffmod [11] 15.3% bf* [17] 5.2% parse-loop12 [81] 0.3% ??? [15] 0.3% --------------------------------------------------------------------------- ??? [2] 100.0% [7] 8412(6.1%) 710(0.5%) ??? ...contract/private/../../private/kw.rkt:761:9 real->bigfloat [13] 91.6% --------------------------------------------------------------------------- run-improve50 [3] 100.0% [8] 3746(2.7%) 0(0.0%) for-loop ...regime-testing/src/mainloop.rkt:251:10 run-iter! [14] 100.0% --------------------------------------------------------------------------- approximate9 [4] 100.0% [9] 350(0.3%) 0(0.0%) loop ...ie/regime-testing/src/core/taylor.rkt:86:4 ??? [12] 100.0% --------------------------------------------------------------------------- run-improve50 [3] 100.0% [10] 320(0.2%) 0(0.0%) setup-alt-simplified ...-testing/src/glue.rkt:49:0 simplify-alt [16] 100.0% --------------------------------------------------------------------------- ??? [6] 100.0% [11] 17200(12.4%) 336(0.2%) bffmod ...gime-testing/src/syntax/syntax.rkt:332:0 ??? [87] 56.4% bf* [17] 41.6% --------------------------------------------------------------------------- loop [9] 1.3% ??? [37] 1.3% for-loop [42] 1.3% ??? [2] 3.8% ??? [62] 3.8% eval-prog [64] 3.8% for-loop [98] 11.1% f66 [71] 11.4% loop [84] 62.2% [12] 8840(6.4%) 2024(1.5%) ??? ...tract/private/arrow-higher-order.rkt:342:33 ??? [37] 66.7% ...sting/src/common.rkt:48:2 [20] 4.1% ??? [102] 3.6% approximate9 [4] 1.3% hash-ref! [26] 1.3% --------------------------------------------------------------------------- ??? [7] 100.0% [13] 7702(5.6%) 6638(4.8%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [97] 13.8% --------------------------------------------------------------------------- for-loop [8] 100.0% [14] 3746(2.7%) 0(0.0%) run-iter! ...regime-testing/src/mainloop.rkt:215:0 finalize-iter! [18] 45.4% simplify! [19] 36.3% gen-series! [21] 9.3% localize-error [22] 9.0% --------------------------------------------------------------------------- ??? [6] 100.0% [15] 334(0.2%) 0(0.0%) ??? ...ects/racket/contract/private/prop.rkt:493:4 ??? [23] 100.0% --------------------------------------------------------------------------- setup-alt-simplified [10] 100.0% [16] 320(0.2%) 0(0.0%) simplify-alt ...e/regime-testing/src/glue.rkt:76:0 ??? [37] 100.0% --------------------------------------------------------------------------- ??? [6] 45.1% bffmod [11] 54.9% [17] 13040(9.4%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [87] 100.0% --------------------------------------------------------------------------- run-iter! [14] 100.0% [18] 1700(1.2%) 0(0.0%) finalize-iter! ...e-testing/src/mainloop.rkt:169:0 ??? [24] 100.0% --------------------------------------------------------------------------- run-iter! [14] 100.0% [19] 1360(1.0%) 0(0.0%) simplify! ...regime-testing/src/mainloop.rkt:155:0 for-loop [25] 100.0% --------------------------------------------------------------------------- ??? [12] 100.0% [20] 362(0.3%) 0(0.0%) ...sting/src/common.rkt:48:2 ...e/arr-i.rkt:906:19 ??? [27] 100.0% --------------------------------------------------------------------------- run-iter! [14] 100.0% [21] 350(0.3%) 0(0.0%) gen-series! ...gime-testing/src/mainloop.rkt:129:0 for-loop [28] 100.0% --------------------------------------------------------------------------- run-iter! [14] 100.0% [22] 336(0.2%) 0(0.0%) localize-error ...sting/src/core/localize.rkt:47:0 hash-ref! [26] 100.0% --------------------------------------------------------------------------- ??? [15] 100.0% [23] 334(0.2%) 334(0.2%) ??? ...lects/racket/contract/private/orc.rkt:83:14 --------------------------------------------------------------------------- ??? [102] 13.6% get-sigs [90] 14.5% finalize-iter! [18] 71.9% [24] 2366(1.7%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [30] 71.9% hash-has-key? [31] 28.1% --------------------------------------------------------------------------- simplify! [19] 100.0% [25] 1360(1.0%) 0(0.0%) for-loop .../regime-testing/src/mainloop.rkt:159:6 ??? [29] 100.0% --------------------------------------------------------------------------- ??? [33] 25.5% ??? [12] 25.5% localize-error [22] 49.0% [26] 686(0.5%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 parse-loop12 [81] 49.0% ??? [33] 25.5% simplify [34] 25.5% --------------------------------------------------------------------------- ??? [100] 50.0% ...sting/src/common.rkt:48:2 [20] 50.0% [27] 362(0.3%) 362(0.3%) ??? ...ects/racket/contract/private/list.rkt:342:4 ??? [100] 50.0% --------------------------------------------------------------------------- gen-series! [21] 100.0% [28] 350(0.3%) 0(0.0%) for-loop .../regime-testing/src/mainloop.rkt:135:7 taylor-alt [32] 100.0% --------------------------------------------------------------------------- for-loop [25] 0.3% run [5] 50.0% [29] 138214(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk16 [1] 49.2% loop [35] 35.5% prepare-points [36] 10.0% run-improve50 [3] 2.4% baseline-error [38] 1.0% oracle-error [39] 0.9% ??? [37] 0.6% eval-errors [95] 0.5% --------------------------------------------------------------------------- ??? [24] 100.0% [30] 1700(1.2%) 0(0.0%) for-loop ...me-testing/src/core/alt-table.rkt:51:2 atab-add-altn [40] 100.0% --------------------------------------------------------------------------- ??? [24] 100.0% [31] 666(0.5%) 0(0.0%) hash-has-key? ...et/private/more-scheme.rkt:368:13 ??? [41] 100.0% --------------------------------------------------------------------------- for-loop [28] 100.0% [32] 350(0.3%) 0(0.0%) taylor-alt ...ie/regime-testing/src/glue.rkt:134:0 for-loop [42] 100.0% --------------------------------------------------------------------------- hash-ref! [26] 100.0% [33] 350(0.3%) 0(0.0%) ??? ...ie/regime-testing/src/core/taylor.rkt:44:15 hash-ref! [26] 100.0% --------------------------------------------------------------------------- hash-ref! [26] 100.0% [34] 350(0.3%) 0(0.0%) simplify ...egime-testing/src/core/reduce.rkt:16:0 f66 [71] 100.0% --------------------------------------------------------------------------- run-improve50 [3] 2.3% ??? [29] 97.7% [35] 99684(72.1%) 0(0.0%) loop ...herbie/regime-testing/src/points.rkt:238:2 loop [43] 35.8% loop [55] 34.2% make-exacts* [54] 30.0% --------------------------------------------------------------------------- run-improve50 [3] 2.3% ??? [29] 97.7% [36] 28284(20.5%) 0(0.0%) prepare-points ...ime-testing/src/points.rkt:214:0 make-exacts* [54] 40.2% loop [55] 32.1% loop [43] 26.5% for-loop [52] 1.2% --------------------------------------------------------------------------- for-loop [79] 1.4% simplify-alt [16] 2.0% for-loop [48] 3.4% ??? [37] 8.2% ??? [29] 9.7% ??? [12] 75.3% [37] 8148(5.9%) 4710(3.4%) ??? ...llects/racket/private/norm-define.rkt:53:83 ??? [47] 12.3% ??? [37] 8.2% iterate-egraph!13 [46] 6.3% return/no-unsupplied [50] 4.9% ??? [12] 4.3% for-loop [48] 3.4% loop [49] 3.4% mk-egraph [53] 2.0% --------------------------------------------------------------------------- ??? [29] 100.0% [38] 2634(1.9%) 0(0.0%) baseline-error ...ime-testing/src/points.rkt:291:0 loop [84] 100.0% --------------------------------------------------------------------------- ??? [29] 100.0% [39] 2218(1.6%) 0(0.0%) oracle-error ...egime-testing/src/points.rkt:286:0 for-loop [44] 100.0% --------------------------------------------------------------------------- for-loop [30] 100.0% [40] 1700(1.2%) 0(0.0%) atab-add-altn ...ting/src/core/alt-table.rkt:208:0 best-and-tied-at-points [45] 100.0% --------------------------------------------------------------------------- hash-has-key? [31] 100.0% [41] 666(0.5%) 322(0.2%) ??? ...ects/racket/contract/private/list.rkt:737:4 for-loop [51] 51.7% --------------------------------------------------------------------------- taylor-alt [32] 100.0% [42] 350(0.3%) 0(0.0%) for-loop ...rbie/regime-testing/src/glue.rkt:139:6 ??? [12] 100.0% --------------------------------------------------------------------------- prepare-points [36] 17.4% loop [35] 82.6% [43] 43236(31.3%) 0(0.0%) loop ...herbie/regime-testing/src/points.rkt:158:2 make-exacts* [54] 52.3% loop [55] 47.7% --------------------------------------------------------------------------- oracle-error [39] 100.0% [44] 2218(1.6%) 0(0.0%) for-loop ...ie/regime-testing/src/points.rkt:288:2 loop [84] 86.1% map [77] 13.9% --------------------------------------------------------------------------- atab-add-altn [40] 100.0% [45] 1700(1.2%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 eval-errors [95] 58.4% alt-errors [58] 41.6% --------------------------------------------------------------------------- ??? [37] 100.0% [46] 1024(0.7%) 0(0.0%) iterate-egraph!13 ...g/src/core/simplify.rkt:105:0 one-iter [56] 100.0% --------------------------------------------------------------------------- ??? [37] 100.0% [47] 1006(0.7%) 0(0.0%) ??? ...racket/collects/racket/private/kw.rkt:761:9 ??? [57] 100.0% --------------------------------------------------------------------------- ??? [37] 100.0% [48] 672(0.5%) 0(0.0%) for-loop ...me-testing/src/core/simplify.rkt:66:12 ??? [37] 100.0% --------------------------------------------------------------------------- ??? [37] 100.0% [49] 672(0.5%) 336(0.2%) loop ...regime-testing/src/core/simplify.rkt:237:2 pass [61] 50.0% --------------------------------------------------------------------------- ??? [37] 100.0% [50] 402(0.3%) 0(0.0%) return/no-unsupplied ...ct/private/arr-i.rkt:533:0 filter [59] 100.0% --------------------------------------------------------------------------- ??? [41] 100.0% [51] 344(0.2%) 0(0.0%) for-loop ...acket/contract/private/list.rkt:743:12 ??? [60] 100.0% --------------------------------------------------------------------------- prepare-points [36] 100.0% [52] 334(0.2%) 0(0.0%) for-loop ...e/regime-testing/src/points.rkt:255:26 ??? [62] 100.0% --------------------------------------------------------------------------- ??? [37] 100.0% [53] 320(0.2%) 0(0.0%) mk-egraph ...ime-testing/src/core/egraph.rkt:131:0 mk-enode-rec! [63] 100.0% --------------------------------------------------------------------------- prepare-points [36] 17.8% loop [43] 35.4% loop [35] 46.8% [54] 63844(46.2%) 0(0.0%) make-exacts* ...egime-testing/src/points.rkt:138:0 loop [84] 98.0% eval-prog [64] 2.0% --------------------------------------------------------------------------- prepare-points [36] 14.2% loop [43] 32.3% loop [35] 53.4% [55] 63790(46.2%) 310(0.2%) loop ...herbie/regime-testing/src/points.rkt:141:4 loop [84] 96.8% debug-print [65] 2.7% --------------------------------------------------------------------------- iterate-egraph!13 [46] 100.0% [56] 1024(0.7%) 0(0.0%) one-iter ...me-testing/src/core/simplify.rkt:116:0 for-loop [66] 68.6% for-loop [69] 31.4% --------------------------------------------------------------------------- ??? [47] 100.0% [57] 1006(0.7%) 1006(0.7%) ??? ...s/racket/contract/private/arr-i.rkt:1233:27 --------------------------------------------------------------------------- best-and-tied-at-points [45] 100.0% [58] 708(0.5%) 0(0.0%) alt-errors ...ime-testing/src/alternative.rkt:59:0 eval-prog [64] 100.0% --------------------------------------------------------------------------- return/no-unsupplied [50] 100.0% [59] 402(0.3%) 402(0.3%) filter ...t/collects/racket/private/list.rkt:256:2 --------------------------------------------------------------------------- for-loop [51] 100.0% [60] 344(0.2%) 0(0.0%) ??? ...private/unconstrained-domain-arrow.rkt:74:4 make-keyword-procedure [67] 100.0% --------------------------------------------------------------------------- loop [49] 100.0% [61] 336(0.2%) 0(0.0%) pass ...regime-testing/src/core/simplify.rkt:227:2 for-loop [68] 100.0% --------------------------------------------------------------------------- for-loop [52] 100.0% [62] 334(0.2%) 0(0.0%) ??? .../herbie/regime-testing/src/points.rkt:230:7 ??? [12] 100.0% --------------------------------------------------------------------------- mk-egraph [53] 33.3% mk-enode-rec! [63] 66.7% [63] 320(0.2%) 0(0.0%) mk-enode-rec! ...testing/src/core/egraph.rkt:122:0 mk-enode-rec! [63] 66.7% mk-enode! [76] 33.3% --------------------------------------------------------------------------- alt-errors [58] 35.1% make-exacts* [54] 64.9% [64] 2016(1.5%) 346(0.3%) eval-prog ...regime-testing/src/programs.rkt:150:0 f66 [71] 50.1% ??? [12] 16.7% ??? [74] 16.1% --------------------------------------------------------------------------- loop [55] 100.0% [65] 1754(1.3%) 0(0.0%) debug-print .../regime-testing/src/debug.rkt:107:0 for-loop [70] 100.0% --------------------------------------------------------------------------- one-iter [56] 100.0% [66] 702(0.5%) 0(0.0%) for-loop ...me-testing/src/core/simplify.rkt:166:2 for-loop [72] 100.0% --------------------------------------------------------------------------- ??? [60] 100.0% [67] 344(0.2%) 344(0.2%) make-keyword-procedure ...ket/private/kw.rkt:260:4 --------------------------------------------------------------------------- pass [61] 100.0% [68] 336(0.2%) 0(0.0%) for-loop ...e-testing/src/core/simplify.rkt:230:29 argmin [73] 100.0% --------------------------------------------------------------------------- for-loop [69] 50.0% one-iter [56] 50.0% [69] 322(0.2%) 0(0.0%) for-loop ...e-testing/src/core/simplify.rkt:126:12 for-loop [69] 50.0% match-e [75] 50.0% --------------------------------------------------------------------------- debug-print [65] 100.0% [70] 1754(1.3%) 1754(1.3%) for-loop ...bie/regime-testing/src/debug.rkt:113:2 --------------------------------------------------------------------------- f66 [71] 12.0% map [77] 12.9% simplify [34] 12.9% eval-prog [64] 62.3% [71] 1360(1.0%) 0(0.0%) f66 ...t/collects/racket/match/compiler.rkt:507:40 ??? [12] 62.3% map [77] 25.7% f66 [71] 12.0% --------------------------------------------------------------------------- for-loop [66] 100.0% [72] 702(0.5%) 0(0.0%) for-loop ...e-testing/src/core/simplify.rkt:148:10 loop! [78] 51.0% mk-enode! [76] 49.0% --------------------------------------------------------------------------- for-loop [68] 100.0% [73] 336(0.2%) 0(0.0%) argmin ...re/racket/collects/racket/list.rkt:743:0 for-loop [79] 100.0% --------------------------------------------------------------------------- eval-prog [64] 100.0% [74] 324(0.2%) 0(0.0%) ??? ...collects/racket/private/qq-and-or.rkt:155:9 ??? [80] 100.0% --------------------------------------------------------------------------- for-loop [69] 100.0% [75] 322(0.2%) 322(0.2%) match-e ...regime-testing/src/core/ematch.rkt:46:0 --------------------------------------------------------------------------- mk-enode-rec! [63] 48.2% for-loop [72] 51.8% [76] 664(0.5%) 0(0.0%) mk-enode! ...ime-testing/src/core/egraph.rkt:102:0 new-enode [82] 100.0% --------------------------------------------------------------------------- parse-loop12 [81] 17.7% f66 [71] 35.5% for-loop [44] 46.8% [77] 658(0.5%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:20:13 ??? [89] 46.8% parse-loop12 [81] 35.5% f66 [71] 17.7% --------------------------------------------------------------------------- for-loop [72] 100.0% [78] 358(0.3%) 0(0.0%) loop! ...e/regime-testing/src/core/enode.rkt:192:2 custom-set-union [83] 100.0% --------------------------------------------------------------------------- argmin [73] 100.0% [79] 336(0.2%) 0(0.0%) for-loop .../regime-testing/src/programs.rkt:210:2 ??? [37] 100.0% --------------------------------------------------------------------------- ??? [74] 100.0% [80] 324(0.2%) 324(0.2%) ??? ...ollects/racket/private/qq-and-or.rkt:164:21 --------------------------------------------------------------------------- parse-loop12 [81] 11.3% map [77] 22.6% hash-ref! [26] 32.6% ??? [6] 33.5% [81] 1032(0.7%) 696(0.5%) parse-loop12 ...s/racket/match/compiler.rkt:418:15 loop [84] 32.6% map [77] 11.3% parse-loop12 [81] 11.3% --------------------------------------------------------------------------- mk-enode! [76] 100.0% [82] 664(0.5%) 0(0.0%) new-enode ...egime-testing/src/core/enode.rkt:97:0 type-of-enode-expr [85] 100.0% --------------------------------------------------------------------------- loop! [78] 100.0% [83] 358(0.3%) 0(0.0%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [86] 100.0% --------------------------------------------------------------------------- parse-loop12 [81] 0.0% loop [55] 0.8% for-loop [44] 1.2% baseline-error [38] 2.0% make-exacts* [54] 3.3% loop [84] 92.6% [84] 129142(93.4%) 1326(1.0%) loop ...cket/collects/racket/private/map.rkt:25:19 loop [84] 92.6% ??? [2] 4.5% ??? [88] 1.5% eval-errors [95] 0.5% ??? [89] 0.5% ??? [12] 0.0% ??? [87] 0.0% --------------------------------------------------------------------------- new-enode [82] 100.0% [85] 664(0.5%) 0(0.0%) type-of-enode-expr ...ting/src/core/enode.rkt:68:0 get-sigs [90] 100.0% --------------------------------------------------------------------------- custom-set-union [83] 100.0% [86] 358(0.3%) 0(0.0%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [91] 100.0% --------------------------------------------------------------------------- loop [84] 0.3% bffmod [11] 9.7% bf* [17] 13.1% ??? [6] 76.9% [87] 99730(72.2%) 67526(48.9%) ??? ...-racket/utils/simple-result-arrow.rkt:39:12 bfdiv [92] 21.7% bffloor [93] 5.8% bfasin [94] 4.7% --------------------------------------------------------------------------- loop [84] 100.0% [88] 1958(1.4%) 0(0.0%) ??? ...herbie/regime-testing/src/points.rkt:293:24 eval-errors [95] 100.0% --------------------------------------------------------------------------- map [77] 33.2% loop [84] 66.8% [89] 928(0.7%) 0(0.0%) ??? ...herbie/regime-testing/src/points.rkt:289:26 ??? [2] 100.0% --------------------------------------------------------------------------- type-of-enode-expr [85] 100.0% [90] 664(0.5%) 0(0.0%) get-sigs .../regime-testing/src/type-check.rkt:5:0 ??? [24] 51.8% ??? [96] 48.2% --------------------------------------------------------------------------- for-loop [86] 100.0% [91] 358(0.3%) 358(0.3%) for-loop ...cts/racket/private/set-types.rkt:178:5 --------------------------------------------------------------------------- ??? [87] 100.0% [92] 21684(15.7%) 17896(12.9%) bfdiv ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [97] 17.5% --------------------------------------------------------------------------- ??? [87] 100.0% [93] 5832(4.2%) 5452(3.9%) bffloor ...ib/math/private/bigfloat/mpfr.rkt:714:4 ??? [97] 6.5% --------------------------------------------------------------------------- ??? [87] 100.0% [94] 4688(3.4%) 4290(3.1%) bfasin ...lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [97] 8.5% --------------------------------------------------------------------------- loop [84] 14.6% best-and-tied-at-points [45] 21.5% ??? [29] 21.5% ??? [88] 42.4% [95] 4618(3.3%) 0(0.0%) eval-errors ...regime-testing/src/points.rkt:271:0 for-loop [98] 100.0% --------------------------------------------------------------------------- get-sigs [90] 100.0% [96] 320(0.2%) 0(0.0%) ??? ...ts/racket/contract/private/arr-i.rkt:804:10 for-loop [99] 100.0% --------------------------------------------------------------------------- bffloor [93] 6.7% bfasin [94] 7.1% real->bigfloat [13] 18.9% bfdiv [92] 67.3% [97] 5630(4.1%) 5630(4.1%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 --------------------------------------------------------------------------- eval-errors [95] 100.0% [98] 4618(3.3%) 348(0.3%) for-loop ...ie/regime-testing/src/points.rkt:273:2 ??? [2] 71.2% ??? [12] 21.2% --------------------------------------------------------------------------- ??? [96] 100.0% [99] 320(0.2%) 0(0.0%) for-loop ...racket/contract/private/hash.rkt:239:6 ??? [100] 100.0% --------------------------------------------------------------------------- for-loop [99] 46.9% ??? [27] 53.1% [100] 682(0.5%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [27] 53.1% ??? [101] 46.9% --------------------------------------------------------------------------- ??? [100] 100.0% [101] 320(0.2%) 0(0.0%) ??? ...ects/racket/contract/private/list.rkt:686:7 ??? [102] 100.0% --------------------------------------------------------------------------- ??? [101] 49.8% ??? [12] 50.2% [102] 642(0.5%) 320(0.2%) ??? ...ects/racket/contract/private/guts.rkt:644:8 ??? [24] 50.2% ---------------------------------------------------------------------------