Profiling results ----------------- Total cpu time observed: 7300ms (out of 7384ms) Number of samples taken: 33 (once every 221ms) ====================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ====================================================================== [1] 7300(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk16 [9] 100.0% ---------------------------------------------------------------------- ??? [66] 100.0% [2] 3208(43.9%) 0(0.0%) approximate9 ...ie/master/src/core/taylor.rkt:11:0 loop [10] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [3] 2472(33.9%) 0(0.0%) ??? ...es/herbie/master/src/core/taylor.rkt:300:23 for-loop [11] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 38.3% map [12] 61.7% [4] 1800(24.7%) 0(0.0%) f40 (unknown source) map [12] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [5] 1170(16.0%) 0(0.0%) ??? ...ies/herbie/master/src/core/taylor.rkt:67:15 ??? [66] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [6] 1042(14.3%) 0(0.0%) ??? ...es/herbie/master/src/core/taylor.rkt:406:23 for-loop [14] 59.9% for-loop [15] 40.1% ---------------------------------------------------------------------- matcher [79] 100.0% [7] 200(2.7%) 0(0.0%) ??? ...s/herbie/master/src/core/matcher.rkt:127:11 for-loop [17] 50.0% foldl [16] 50.0% ---------------------------------------------------------------------- taylor [85] 100.0% [8] 192(2.6%) 0(0.0%) taylor-cbrt ...ie/master/src/core/taylor.rkt:377:0 parse-loop74 [13] 100.0% ---------------------------------------------------------------------- ??? [1] 100.0% [9] 7300(100.0%) 0(0.0%) profile-thunk16 ...e/pkgs/profile-lib/main.rkt:9:0 run [18] 100.0% ---------------------------------------------------------------------- approximate9 [2] 100.0% [10] 3208(43.9%) 0(0.0%) loop ...ies/herbie/master/src/core/taylor.rkt:86:4 ??? [66] 63.5% hash-ref! [74] 36.5% ---------------------------------------------------------------------- ??? [3] 100.0% [11] 2472(33.9%) 216(3.0%) for-loop ...rbie/master/src/core/taylor.rkt:303:27 hash-ref! [74] 91.3% ---------------------------------------------------------------------- f40 [4] 100.0% [12] 1800(24.7%) 0(0.0%) map ...t-7.5/collects/racket/private/map.rkt:35:13 f40 [4] 61.7% f61 [20] 20.1% parse-loop74 [13] 11.9% ??? [21] 6.3% ---------------------------------------------------------------------- taylor-cbrt [8] 11.1% map [12] 31.3% hash-ref! [74] 57.6% [13] 1736(23.8%) 0(0.0%) parse-loop74 (unknown source) eval-const-expr [19] 100.0% ---------------------------------------------------------------------- ??? [6] 100.0% [14] 624(8.5%) 0(0.0%) for-loop ...rbie/master/src/core/taylor.rkt:412:39 hash-ref! [74] 100.0% ---------------------------------------------------------------------- ??? [6] 100.0% [15] 418(5.7%) 0(0.0%) for-loop ...rbie/master/src/core/taylor.rkt:410:33 hash-ref! [74] 100.0% ---------------------------------------------------------------------- ??? [7] 100.0% [16] 200(2.7%) 0(0.0%) foldl ....5/collects/racket/private/list.rkt:229:4 ??? [22] 100.0% ---------------------------------------------------------------------- ??? [7] 100.0% [17] 200(2.7%) 0(0.0%) for-loop ...bie/master/src/core/matcher.rkt:129:15 matcher [79] 100.0% ---------------------------------------------------------------------- profile-thunk16 [9] 100.0% [18] 7300(100.0%) 0(0.0%) run ...et-7.5/share/pkgs/profile-lib/main.rkt:39:2 .../more-scheme.rkt:261:28 [23] 100.0% ---------------------------------------------------------------------- f61 [20] 32.3% parse-loop74 [13] 67.7% [19] 2566(35.2%) 200(2.7%) eval-const-expr ...e/master/src/programs.rkt:120:0 temp85_0 [72] 92.2% ---------------------------------------------------------------------- map [12] 100.0% [20] 830(11.4%) 0(0.0%) f61 (unknown source) eval-const-expr [19] 100.0% ---------------------------------------------------------------------- map [12] 100.0% [21] 426(5.8%) 0(0.0%) ??? ...lies/herbie/master/src/core/reduce.rkt:57:5 for-loop [24] 100.0% ---------------------------------------------------------------------- foldl [16] 100.0% [22] 200(2.7%) 0(0.0%) ??? ...ies/herbie/master/src/core/matcher.rkt:25:7 core457 [39] 100.0% ---------------------------------------------------------------------- for-loop [76] 2.8% run [18] 97.2% [23] 7300(100.0%) 214(2.9%) .../more-scheme.rkt:261:28 (unknown source) run-improve47 [25] 75.3% prepare-points-intervals [26] 13.8% errors [67] 2.8% oracle-error [28] 2.7% get-final-combination [30] 2.5% ??? [29] 1.3% ---------------------------------------------------------------------- ??? [21] 100.0% [24] 426(5.8%) 0(0.0%) for-loop ...herbie/master/src/core/reduce.rkt:58:7 pattern-match [27] 100.0% ---------------------------------------------------------------------- .../more-scheme.rkt:261:28 [23] 100.0% [25] 5700(78.1%) 0(0.0%) run-improve47 ...bie/master/src/mainloop.rkt:347:0 for-loop [31] 100.0% ---------------------------------------------------------------------- .../more-scheme.rkt:261:28 [23] 100.0% [26] 1008(13.8%) 206(2.8%) prepare-points-intervals ...r/src/points.rkt:120:0 loop [32] 79.6% ---------------------------------------------------------------------- for-loop [24] 100.0% [27] 426(5.8%) 0(0.0%) pattern-match .../master/src/core/matcher.rkt:29:0 for-loop [33] 51.2% constant? [34] 48.8% ---------------------------------------------------------------------- .../more-scheme.rkt:261:28 [23] 100.0% [28] 200(2.7%) 0(0.0%) oracle-error ...herbie/master/src/points.rkt:198:0 for-loop [35] 100.0% ---------------------------------------------------------------------- .../more-scheme.rkt:261:28 [23] 100.0% [29] 196(2.7%) 196(2.7%) ??? .../herbie/master/src/syntax/syntax.rkt:214:17 ---------------------------------------------------------------------- .../more-scheme.rkt:261:28 [23] 100.0% [30] 184(2.5%) 0(0.0%) get-final-combination ...er/src/mainloop.rkt:372:0 infer-splitpoints [36] 100.0% ---------------------------------------------------------------------- run-improve47 [25] 100.0% [31] 5700(78.1%) 0(0.0%) for-loop ...s/herbie/master/src/mainloop.rkt:366:4 run-iter! [37] 100.0% ---------------------------------------------------------------------- prepare-points-intervals [26] 100.0% [32] 802(11.0%) 0(0.0%) loop ...ghtlies/herbie/master/src/points.rkt:133:4 loop [38] 77.1% loop [108] 22.9% ---------------------------------------------------------------------- pattern-match [27] 100.0% [33] 218(3.0%) 0(0.0%) for-loop ...erbie/master/src/core/matcher.rkt:26:9 core457 [39] 100.0% ---------------------------------------------------------------------- pattern-match [27] 100.0% [34] 208(2.8%) 0(0.0%) constant? ...ie/master/src/syntax/syntax.rkt:726:0 value? [40] 100.0% ---------------------------------------------------------------------- oracle-error [28] 100.0% [35] 200(2.7%) 200(2.7%) for-loop ...ies/herbie/master/src/points.rkt:199:2 ---------------------------------------------------------------------- get-final-combination [30] 100.0% [36] 184(2.5%) 0(0.0%) infer-splitpoints ...ter/src/core/regimes.rkt:33:0 for-loop [41] 100.0% ---------------------------------------------------------------------- for-loop [31] 100.0% [37] 5700(78.1%) 0(0.0%) run-iter! .../herbie/master/src/mainloop.rkt:328:0 gen-series! [42] 56.3% finalize-iter! [43] 28.2% simplify! [44] 12.0% gen-rewrites! [47] 3.5% ---------------------------------------------------------------------- loop [32] 100.0% [38] 618(8.5%) 208(2.8%) loop ...ightlies/herbie/master/src/points.rkt:79:2 real->precision [46] 36.2% ??? [48] 30.1% ---------------------------------------------------------------------- ??? [22] 47.8% for-loop [33] 52.2% [39] 418(5.7%) 0(0.0%) core457 ...acket/contract/private/arr-i.rkt:976:19 un-dep/maybe-chaperone [45] 100.0% ---------------------------------------------------------------------- constant? [34] 100.0% [40] 208(2.8%) 208(2.8%) value? .../herbie/master/src/syntax/types.rkt:18:0 ---------------------------------------------------------------------- infer-splitpoints [36] 100.0% [41] 184(2.5%) 0(0.0%) for-loop ...erbie/master/src/core/regimes.rkt:46:6 option-on-expr [49] 100.0% ---------------------------------------------------------------------- run-iter! [37] 100.0% [42] 3208(43.9%) 0(0.0%) gen-series! ...erbie/master/src/mainloop.rkt:161:0 for-loop [50] 100.0% ---------------------------------------------------------------------- run-iter! [37] 100.0% [43] 1610(22.1%) 0(0.0%) finalize-iter! ...ie/master/src/mainloop.rkt:279:0 ??? [51] 100.0% ---------------------------------------------------------------------- run-iter! [37] 100.0% [44] 682(9.3%) 0(0.0%) simplify! .../herbie/master/src/mainloop.rkt:225:0 ??? [52] 100.0% ---------------------------------------------------------------------- core457 [39] 100.0% [45] 418(5.7%) 0(0.0%) un-dep/maybe-chaperone ...private/arr-i.rkt:1137:2 ??? [53] 52.2% ??? [59] 47.8% ---------------------------------------------------------------------- loop [38] 100.0% [46] 224(3.1%) 0(0.0%) real->precision ...e/master/src/programs.rkt:94:11 ??? [66] 100.0% ---------------------------------------------------------------------- run-iter! [37] 100.0% [47] 200(2.7%) 0(0.0%) gen-rewrites! ...bie/master/src/mainloop.rkt:184:0 for-loop [54] 100.0% ---------------------------------------------------------------------- loop [38] 100.0% [48] 186(2.5%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:379:33 ival-add [55] 100.0% ---------------------------------------------------------------------- for-loop [41] 100.0% [49] 184(2.5%) 0(0.0%) option-on-expr ...aster/src/core/regimes.rkt:125:0 temp85_0 [72] 100.0% ---------------------------------------------------------------------- gen-series! [42] 100.0% [50] 3208(43.9%) 0(0.0%) for-loop ...s/herbie/master/src/mainloop.rkt:168:7 taylor-alt [56] 100.0% ---------------------------------------------------------------------- finalize-iter! [43] 100.0% [51] 1610(22.1%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:486:18 for-loop [57] 100.0% ---------------------------------------------------------------------- simplify! [44] 100.0% [52] 682(9.3%) 0(0.0%) ??? ...es/herbie/master/src/core/simplify.rkt:42:0 egraph-run [58] 100.0% ---------------------------------------------------------------------- un-dep/maybe-chaperone [45] 100.0% [53] 218(3.0%) 0(0.0%) ??? ...llects/racket/contract/private/orc.rkt:88:2 ??? [59] 100.0% ---------------------------------------------------------------------- gen-rewrites! [47] 100.0% [54] 200(2.7%) 0(0.0%) for-loop .../herbie/master/src/mainloop.rkt:192:11 rewrite-expression-head24 [60] 100.0% ---------------------------------------------------------------------- ??? [48] 100.0% [55] 186(2.5%) 186(2.5%) ival-add ...erbie/master/src/biginterval.rkt:102:0 ---------------------------------------------------------------------- for-loop [50] 100.0% [56] 3208(43.9%) 0(0.0%) taylor-alt ...herbie/master/src/mainloop.rkt:147:0 for-loop [61] 100.0% ---------------------------------------------------------------------- ??? [51] 100.0% [57] 1610(22.1%) 0(0.0%) for-loop ...bie/master/src/core/alt-table.rkt:55:2 atab-add-altn [62] 62.1% errors [67] 37.9% ---------------------------------------------------------------------- ??? [52] 100.0% [58] 682(9.3%) 0(0.0%) egraph-run .../pkgs/egg-herbie-linux/main.rkt:49:0 egraph-add-exprs [63] 100.0% ---------------------------------------------------------------------- un-dep/maybe-chaperone [45] 47.8% ??? [53] 52.2% [59] 418(5.7%) 0(0.0%) ??? ...cts/racket/contract/private/guts.rkt:835:10 ??? [64] 100.0% ---------------------------------------------------------------------- for-loop [54] 100.0% [60] 200(2.7%) 0(0.0%) rewrite-expression-head24 ...core/matcher.rkt:85:0 rewriter [65] 100.0% ---------------------------------------------------------------------- taylor-alt [56] 100.0% [61] 3208(43.9%) 0(0.0%) for-loop ...s/herbie/master/src/mainloop.rkt:153:6 ??? [66] 100.0% ---------------------------------------------------------------------- for-loop [57] 100.0% [62] 1000(13.7%) 0(0.0%) atab-add-altn ...ster/src/core/alt-table.rkt:203:0 errors [67] 58.4% override-at-pnts [69] 41.6% ---------------------------------------------------------------------- egraph-run [58] 100.0% [63] 682(9.3%) 0(0.0%) egraph-add-exprs ...gg-herbie-linux/main.rkt:111:0 ??? [68] 100.0% ---------------------------------------------------------------------- ??? [59] 100.0% [64] 418(5.7%) 200(2.7%) ??? ...ntract/private/arrow-higher-order.rkt:575:2 build-subcontract-late-negs [70] 52.2% ---------------------------------------------------------------------- matcher [79] 50.0% rewrite-expression-head24 [60] 50.0% [65] 200(2.7%) 0(0.0%) rewriter ...erbie/master/src/core/matcher.rkt:87:2 for-loop [71] 100.0% ---------------------------------------------------------------------- real->precision [46] 6.5% ??? [5] 11.4% loop [10] 19.8% location-do [73] 31.2% for-loop [61] 31.2% [66] 3432(47.0%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:375:33 location-do [73] 31.2% approximate9 [2] 31.2% hash-ref! [74] 31.2% bf [78] 6.5% ---------------------------------------------------------------------- .../more-scheme.rkt:261:28 [23] 14.8% atab-add-altn [62] 41.7% for-loop [57] 43.5% [67] 1402(19.2%) 0(0.0%) errors ...tlies/herbie/master/src/points.rkt:211:0 temp85_0 [72] 55.9% for-loop [76] 44.1% ---------------------------------------------------------------------- egraph-add-exprs [63] 100.0% [68] 682(9.3%) 0(0.0%) ??? ...s/herbie/master/src/core/simplify.rkt:102:6 for-loop [75] 100.0% ---------------------------------------------------------------------- atab-add-altn [62] 100.0% [69] 416(5.7%) 0(0.0%) override-at-pnts ...r/src/core/alt-table.rkt:138:0 for-loop [77] 100.0% ---------------------------------------------------------------------- ??? [64] 100.0% [70] 218(3.0%) 218(3.0%) build-subcontract-late-negs ...her-order.rkt:711:0 ---------------------------------------------------------------------- rewriter [65] 100.0% [71] 200(2.7%) 0(0.0%) for-loop ...erbie/master/src/core/matcher.rkt:89:4 matcher [79] 100.0% ---------------------------------------------------------------------- option-on-expr [49] 5.5% errors [67] 23.5% eval-const-expr [19] 71.0% [72] 3334(45.7%) 0(0.0%) temp85_0 (unknown source) compile15 [80] 100.0% ---------------------------------------------------------------------- ??? [66] 43.0% location-do [73] 57.0% [73] 3208(43.9%) 0(0.0%) location-do ...herbie/master/src/programs.rkt:63:0 location-do [73] 57.0% ??? [66] 43.0% ---------------------------------------------------------------------- for-loop [15] 2.4% ??? [83] 2.5% for-loop [14] 4.0% ??? [82] 5.8% loop [10] 10.3% ??? [81] 22.8% ??? [66] 25.8% for-loop [11] 26.4% [74] 3208(43.9%) 0(0.0%) hash-ref! .../racket/private/more-scheme.rkt:376:2 ??? [3] 28.6% ??? [81] 22.8% f40 [4] 13.4% ??? [5] 10.3% parse-loop74 [13] 7.2% ??? [6] 6.4% ??? [82] 5.8% taylor [85] 3.0% ??? [83] 2.5% ---------------------------------------------------------------------- ??? [68] 100.0% [75] 682(9.3%) 682(9.3%) for-loop ...bie/master/src/core/simplify.rkt:121:2 ---------------------------------------------------------------------- errors [67] 100.0% [76] 618(8.5%) 208(2.8%) for-loop ...ies/herbie/master/src/points.rkt:213:2 .../more-scheme.rkt:261:28 [23] 66.3% ---------------------------------------------------------------------- override-at-pnts [69] 100.0% [77] 416(5.7%) 416(5.7%) for-loop ...e/master/src/core/alt-table.rkt:139:22 ---------------------------------------------------------------------- ??? [66] 100.0% [78] 224(3.1%) 0(0.0%) bf ...ath-lib/math/private/bigfloat/mpfr.rkt:615:2 new-mpfr [84] 100.0% ---------------------------------------------------------------------- for-loop [17] 33.3% for-loop [71] 66.7% [79] 200(2.7%) 0(0.0%) matcher ...erbie/master/src/core/matcher.rkt:115:2 ??? [7] 66.7% rewriter [65] 33.3% ---------------------------------------------------------------------- temp85_0 [72] 100.0% [80] 3334(45.7%) 0(0.0%) compile15 (unknown source) temp91_0 [86] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [81] 3016(41.3%) 0(0.0%) ??? ...ies/herbie/master/src/core/taylor.rkt:44:15 hash-ref! [74] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [82] 736(10.1%) 0(0.0%) ??? ...es/herbie/master/src/core/taylor.rkt:327:33 hash-ref! [74] 100.0% ---------------------------------------------------------------------- hash-ref! [74] 100.0% [83] 408(5.6%) 0(0.0%) ??? ...es/herbie/master/src/core/taylor.rkt:343:33 hash-ref! [74] 100.0% ---------------------------------------------------------------------- bf [78] 100.0% [84] 224(3.1%) 224(3.1%) new-mpfr ...b/math/private/bigfloat/mpfr.rkt:348:0 ---------------------------------------------------------------------- hash-ref! [74] 20.0% taylor [85] 80.0% [85] 192(2.6%) 0(0.0%) taylor .../herbie/master/src/core/taylor.rkt:169:0 taylor [85] 80.0% taylor-cbrt [8] 20.0% ---------------------------------------------------------------------- compile15 [80] 100.0% [86] 3334(45.7%) 0(0.0%) temp91_0 (unknown source) temp118_0 [87] 81.2% compile-top9 [88] 18.8% ---------------------------------------------------------------------- temp91_0 [86] 100.0% [87] 2708(37.1%) 0(0.0%) temp118_0 (unknown source) expand-capturing-lifts [89] 100.0% ---------------------------------------------------------------------- temp91_0 [86] 100.0% [88] 626(8.6%) 0(0.0%) compile-top9 (unknown source) compile-forms33 [90] 100.0% ---------------------------------------------------------------------- temp118_0 [87] 100.0% [89] 2708(37.1%) 200(2.7%) expand-capturing-lifts (unknown source) lambda-clause-expander [91] 71.1% dispatch-transformer41 [92] 21.5% ---------------------------------------------------------------------- compile-top9 [88] 100.0% [90] 626(8.6%) 0(0.0%) compile-forms33 (unknown source) for-loop [95] 100.0% ---------------------------------------------------------------------- expand-capturing-lifts [89] 100.0% [91] 1926(26.4%) 0(0.0%) lambda-clause-expander (unknown source) finish-bodys [93] 89.8% loop [108] 10.2% ---------------------------------------------------------------------- expand-capturing-lifts [89] 100.0% [92] 582(8.0%) 0(0.0%) dispatch-transformer41 (unknown source) apply-transformer52 [94] 100.0% ---------------------------------------------------------------------- lambda-clause-expander [91] 41.9% for-loop [95] 58.1% [93] 1730(23.7%) 344(4.7%) finish-bodys (unknown source) for-loop [95] 80.1% ---------------------------------------------------------------------- dispatch-transformer41 [92] 100.0% [94] 582(8.0%) 390(5.3%) apply-transformer52 (unknown source) apply-transformer-in-context [96] 33.0% ---------------------------------------------------------------------- for-loop [95] 13.3% compile-forms33 [90] 31.1% finish-bodys [93] 55.6% [95] 2012(27.6%) 0(0.0%) for-loop (unknown source) finish-bodys [93] 39.0% compile-module-linklet57 [97] 31.1% for-loop [95] 13.3% expand-id-application-form17 [99] 5.1% expand-implicit [102] 5.0% syntax-e [98] 3.8% dispatch-variable [101] 1.0% datum->syntax6 [104] 1.0% add-local-binding!39 [100] 0.8% ---------------------------------------------------------------------- apply-transformer52 [94] 100.0% [96] 192(2.6%) 0(0.0%) apply-transformer-in-context (unknown source) parse-lambda [103] 100.0% ---------------------------------------------------------------------- for-loop [95] 100.0% [97] 626(8.6%) 626(8.6%) compile-module-linklet57 (unknown source) ---------------------------------------------------------------------- for-loop [95] 100.0% [98] 388(5.3%) 0(0.0%) syntax-e (unknown source) syntax-e/no-taint [105] 100.0% ---------------------------------------------------------------------- for-loop [95] 100.0% [99] 206(2.8%) 0(0.0%) expand-id-application-form17 (unknown source) binding-lookup52 [106] 100.0% ---------------------------------------------------------------------- for-loop [95] 100.0% [100] 200(2.7%) 200(2.7%) add-local-binding!39 (unknown source) ---------------------------------------------------------------------- for-loop [95] 100.0% [101] 200(2.7%) 0(0.0%) dispatch-variable (unknown source) substitute-variable6 [107] 100.0% ---------------------------------------------------------------------- for-loop [95] 100.0% [102] 200(2.7%) 0(0.0%) expand-implicit (unknown source) datum->syntax6 [104] 100.0% ---------------------------------------------------------------------- apply-transformer-in-context [96]100.0% [103] 192(2.6%) 192(2.6%) parse-lambda ...llects/racket/private/kw.rkt:619:2 ---------------------------------------------------------------------- for-loop [95] 49.0% expand-implicit [102] 51.0% [104] 392(5.4%) 192(2.6%) datum->syntax6 (unknown source) loop [108] 51.0% ---------------------------------------------------------------------- syntax-e [98] 100.0% [105] 388(5.3%) 0(0.0%) syntax-e/no-taint (unknown source) loop [108] 100.0% ---------------------------------------------------------------------- expand-id-application-form17 [99]100.0% [106] 206(2.8%) 206(2.8%) binding-lookup52 (unknown source) ---------------------------------------------------------------------- dispatch-variable [101] 100.0% [107] 200(2.7%) 200(2.7%) substitute-variable6 (unknown source) ---------------------------------------------------------------------- loop [32] 19.0% lambda-clause-expander [91] 20.2% datum->syntax6 [104] 20.7% syntax-e/no-taint [105] 40.1% [108] 968(13.3%) 396(5.4%) loop (unknown source) gf [109] 40.1% ordinary-value? [110] 19.0% ---------------------------------------------------------------------- loop [108] 100.0% [109] 388(5.3%) 388(5.3%) gf (unknown source) ---------------------------------------------------------------------- loop [108] 100.0% [110] 184(2.5%) 0(0.0%) ordinary-value? ...erbie/master/src/float.rkt:52:0 list-member? [111] 100.0% ---------------------------------------------------------------------- ordinary-value? [110] 100.0% [111] 184(2.5%) 184(2.5%) list-member? ...llects/racket/private/set.rkt:24:0 ----------------------------------------------------------------------