Profiling results ----------------- Total cpu time observed: 82314ms (out of 83268ms) Number of samples taken: 342 (once every 241ms) (Hiding functions with self<1.0% and local<2.0%: 3 of 102 hidden) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [37] 100.0% [1] 81460(99.0%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [9] 100.0% ----------------------------------------------------------------------- ??? [37] 100.0% [2] 11462(13.9%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [10] 81.1% loop [43] 17.2% get-final-combination [18] 1.7% ----------------------------------------------------------------------- hash-ref! [70] 100.0% [3] 9000(10.9%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 loop [66] 95.4% hash-ref! [70] 4.6% ----------------------------------------------------------------------- loop [66] 3.0% ??? [37] 97.0% [4] 6588(8.0%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 iterate-egraph!5 [20] 48.4% simplify-expr [11] 28.9% for-loop [12] 16.4% loop [16] 6.3% ----------------------------------------------------------------------- hash-ref! [70] 100.0% [5] 1044(1.3%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [13] 100.0% ----------------------------------------------------------------------- hash-ref! [70] 100.0% [6] 802(1.0%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [14] 100.0% ----------------------------------------------------------------------- hash-ref! [70] 100.0% [7] 602(0.7%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:392:23 for-loop [15] 100.0% ----------------------------------------------------------------------- f94 [85] 100.0% [8] 200(0.2%) 0(0.0%) taylor-invert .../herbie/src/core/taylor.rkt:312:0 first-nonzero-exp [17] 100.0% ----------------------------------------------------------------------- profile-thunk14 [1] 99.5% [9] 81898(99.5%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [37] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [10] 9296(11.3%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [19] 100.0% ----------------------------------------------------------------------- simplify [4] 100.0% [11] 1904(2.3%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [20] 100.0% ----------------------------------------------------------------------- simplify [4] 100.0% [12] 1080(1.3%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [20] 100.0% ----------------------------------------------------------------------- ??? [5] 100.0% [13] 1044(1.3%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [70] 57.7% ??? [22] 42.3% ----------------------------------------------------------------------- ??? [6] 100.0% [14] 802(1.0%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [70] 100.0% ----------------------------------------------------------------------- ??? [7] 100.0% [15] 602(0.7%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:396:33 for-loop [21] 100.0% ----------------------------------------------------------------------- simplify [4] 100.0% [16] 418(0.5%) 0(0.0%) loop ...tatlock/herbie/src/core/simplify.rkt:203:2 pass [23] 100.0% ----------------------------------------------------------------------- taylor-invert [8] 100.0% [17] 200(0.2%) 0(0.0%) first-nonzero-exp ...bie/src/core/taylor.rkt:260:0 hash-ref! [70] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [18] 200(0.2%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 extract-alt [24] 100.0% ----------------------------------------------------------------------- for-loop [10] 100.0% [19] 9296(11.3%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [25] 68.7% gen-series! [27] 18.2% finalize-iter! [28] 11.0% localize-error [30] 2.2% ----------------------------------------------------------------------- for-loop [12] 17.5% simplify-expr [11] 30.9% simplify [4] 51.6% [20] 6170(7.5%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [26] 100.0% ----------------------------------------------------------------------- for-loop [15] 100.0% [21] 602(0.7%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:398:39 hash-ref! [70] 100.0% ----------------------------------------------------------------------- for-loop [13] 100.0% [22] 442(0.5%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:288:19 hash-ref! [70] 100.0% ----------------------------------------------------------------------- loop [16] 100.0% [23] 418(0.5%) 0(0.0%) pass ...tatlock/herbie/src/core/simplify.rkt:193:2 for-loop [29] 100.0% ----------------------------------------------------------------------- get-final-combination [18] 100.0% [24] 200(0.2%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [66] 100.0% ----------------------------------------------------------------------- run-iter! [19] 100.0% [25] 6388(7.8%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [31] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [20] 100.0% [26] 6170(7.5%) 220(0.3%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [32] 86.4% loop [35] 10.0% ----------------------------------------------------------------------- run-iter! [19] 100.0% [27] 1688(2.1%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [33] 100.0% ----------------------------------------------------------------------- run-iter! [19] 100.0% [28] 1020(1.2%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [34] 100.0% ----------------------------------------------------------------------- pass [23] 100.0% [29] 418(0.5%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:196:29 argmin [36] 100.0% ----------------------------------------------------------------------- run-iter! [19] 100.0% [30] 200(0.2%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [70] 100.0% ----------------------------------------------------------------------- simplify! [25] 100.0% [31] 6388(7.8%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [37] 100.0% ----------------------------------------------------------------------- for-loop [32] 50.0% one-iter [26] 50.0% [32] 5330(6.5%) 836(1.0%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [32] 50.0% match-e [38] 42.2% ----------------------------------------------------------------------- gen-series! [27] 100.0% [33] 1688(2.1%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [39] 100.0% ----------------------------------------------------------------------- finalize-iter! [28] 100.0% [34] 1020(1.2%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [40] 100.0% ----------------------------------------------------------------------- one-iter [26] 100.0% [35] 620(0.8%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [41] 100.0% ----------------------------------------------------------------------- for-loop [29] 100.0% [36] 418(0.5%) 0(0.0%) argmin ...re/racket/collects/racket/list.rkt:743:0 expression-cost [42] 100.0% ----------------------------------------------------------------------- for-loop [31] 2.6% run [9] 48.7% [37] 82314(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 48.2% loop [43] 43.3% run-improve58 [2] 5.9% simplify [4] 2.6% ----------------------------------------------------------------------- for-loop [53] 7.1% for-loop [32] 92.9% [38] 4494(5.5%) 3452(4.2%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [46] 13.6% for-loop [53] 9.5% list-cartesian-product [48] 4.9% ----------------------------------------------------------------------- for-loop [33] 100.0% [39] 1688(2.1%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [44] 100.0% ----------------------------------------------------------------------- ??? [34] 100.0% [40] 1020(1.2%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [45] 100.0% ----------------------------------------------------------------------- loop [35] 100.0% [41] 620(0.8%) 198(0.2%) apply-match .../herbie/src/core/simplify.rkt:122:2 loop! [49] 35.8% reduce-to-single! [50] 32.3% ----------------------------------------------------------------------- argmin [36] 100.0% [42] 418(0.5%) 0(0.0%) expression-cost ...k/herbie/src/programs.rkt:212:0 compile [47] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 2.7% ??? [37] 97.3% [43] 72818(88.5%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 loop [51] 53.3% make-exacts* [58] 31.8% loop [59] 14.9% ----------------------------------------------------------------------- taylor-alt [39] 100.0% [44] 1688(2.1%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [52] 100.0% ----------------------------------------------------------------------- for-loop [40] 100.0% [45] 1020(1.2%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [54] 80.2% override-at-pnts [56] 19.8% ----------------------------------------------------------------------- match-e [38] 100.0% [46] 824(1.0%) 602(0.7%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [53] 26.9% ----------------------------------------------------------------------- expression-cost [42] 100.0% [47] 418(0.5%) 0(0.0%) compile .../ztatlock/herbie/src/programs.rkt:189:0 hash-ref! [70] 100.0% ----------------------------------------------------------------------- match-e [38] 100.0% [48] 222(0.3%) 222(0.3%) list-cartesian-product ...src/core/ematch.rkt:20:0 ----------------------------------------------------------------------- apply-match [41] 100.0% [49] 222(0.3%) 0(0.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 custom-set-union [55] 100.0% ----------------------------------------------------------------------- apply-match [41] 100.0% [50] 200(0.2%) 0(0.0%) reduce-to-single! ...bie/src/core/egraph.rkt:324:0 make-sequence [57] 100.0% ----------------------------------------------------------------------- loop [43] 100.0% [51] 38838(47.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [59] 42.3% make-exacts* [58] 41.5% eval-prog [63] 16.2% ----------------------------------------------------------------------- location-do [52] 43.1% for-loop [44] 56.9% [52] 1688(2.1%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [60] 43.7% location-do [52] 43.1% simplify [75] 13.2% ----------------------------------------------------------------------- for-loop [46] 25.8% match-e [38] 74.2% [53] 860(1.0%) 218(0.3%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [38] 74.7% ----------------------------------------------------------------------- atab-add-altn [45] 100.0% [54] 818(1.0%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [61] 100.0% ----------------------------------------------------------------------- loop! [49] 100.0% [55] 222(0.3%) 222(0.3%) custom-set-union ...et/private/set-types.rkt:168:0 ----------------------------------------------------------------------- atab-add-altn [45] 100.0% [56] 202(0.2%) 0(0.0%) override-at-pnts ...e/src/core/alt-table.rkt:145:0 errors [61] 100.0% ----------------------------------------------------------------------- reduce-to-single! [50] 100.0% [57] 200(0.2%) 200(0.2%) make-sequence ...ects/racket/private/for.rkt:508:2 ----------------------------------------------------------------------- loop [51] 41.1% loop [43] 58.9% [58] 39224(47.7%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [62] 53.0% loop [66] 39.5% eval-prog [63] 7.5% ----------------------------------------------------------------------- loop [43] 39.8% loop [51] 60.2% [59] 27298(33.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [62] 100.0% ----------------------------------------------------------------------- location-do [52] 100.0% [60] 1466(1.8%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [64] 84.9% f94 [85] 15.1% ----------------------------------------------------------------------- override-at-pnts [56] 19.8% best-and-tied-at-points [54] 80.2% [61] 1020(1.2%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [65] 58.8% eval-prog [63] 41.2% ----------------------------------------------------------------------- f94 [85] 1.4% make-exacts* [58] 42.6% loop [59] 56.0% [62] 48740(59.2%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [66] 98.6% parse-loop12 [81] 0.9% f94 [85] 0.5% ----------------------------------------------------------------------- errors [61] 4.4% make-exacts* [58] 30.4% loop [51] 65.2% [63] 9654(11.7%) 652(0.8%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 hash-ref! [70] 91.2% inductor [67] 2.1% ----------------------------------------------------------------------- approximate9 [60] 100.0% [64] 1244(1.5%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [70] 100.0% ----------------------------------------------------------------------- errors [61] 100.0% [65] 600(0.7%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [69] 66.7% ulp-difference [68] 33.3% ----------------------------------------------------------------------- extract-alt [24] 0.1% parse-loop12 [81] 0.3% make-exacts* [58] 0.3% map [62] 2.3% ??? [3] 11.8% loop [66] 85.2% [66] 72766(88.4%) 256(0.3%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [66] 85.2% hash-ref! [70] 11.8% ??? [69] 2.6% parse-loop12 [81] 0.3% simplify [4] 0.1% ??? [87] 0.0% ->flonum [71] 0.0% ----------------------------------------------------------------------- eval-prog [63] 25.0% inductor [67] 75.0% [67] 202(0.2%) 202(0.2%) inductor .../ztatlock/herbie/src/programs.rkt:73:2 inductor [67] 75.0% ----------------------------------------------------------------------- for-loop [65] 100.0% [68] 200(0.2%) 0(0.0%) ulp-difference ...atlock/herbie/src/float.rkt:19:0 ??? [82] 100.0% ----------------------------------------------------------------------- for-loop [65] 0.6% loop [66] 99.4% [69] 63196(76.8%) 2886(3.5%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [72] 87.3% real->bigfloat [74] 6.9% ??? [93] 0.4% ----------------------------------------------------------------------- first-nonzero-exp [17] 0.6% compile [47] 0.9% ??? [22] 0.9% localize-error [30] 0.9% for-loop [21] 0.9% for-loop [13] 0.9% for-loop [14] 1.5% loop [89] 2.3% ??? [76] 2.4% loop [64] 2.4% ??? [3] 3.0% eval-prog [63] 30.5% loop [66] 50.3% [70] 10884(13.2%) 418(0.5%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [3] 53.3% bigfloat-hash [73] 30.5% simplify [75] 4.4% ??? [76] 2.4% parse-loop12 [81] 1.8% ??? [5] 1.8% ??? [6] 1.5% ??? [7] 0.9% f94 [85] 0.9% ----------------------------------------------------------------------- loop [66] 100.0% [71] 532(0.6%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [96] 51.1% ??? [82] 48.9% ----------------------------------------------------------------------- ??? [69] 100.0% [72] 55186(67.0%) 426(0.5%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [87] 77.0% bfcube [78] 8.4% bf* [83] 7.3% ...ow-val-first.rkt:357:18 [84] 3.2% ...higher-order.rkt:373:33 [80] 2.9% ??? [82] 0.4% ----------------------------------------------------------------------- hash-ref! [70] 100.0% [73] 8800(10.7%) 0(0.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 sig+exp->bigfloat [77] 62.1% bfcanonicalize [79] 37.9% ----------------------------------------------------------------------- ??? [69] 100.0% [74] 4390(5.3%) 3208(3.9%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [97] 26.9% ----------------------------------------------------------------------- location-do [52] 13.2% hash-ref! [70] 86.8% [75] 1688(2.1%) 222(0.3%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 parse-loop12 [81] 59.4% f94 [85] 27.5% ----------------------------------------------------------------------- hash-ref! [70] 100.0% [76] 1244(1.5%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:63:15 hash-ref! [70] 100.0% ----------------------------------------------------------------------- bigfloat-hash [73] 100.0% [77] 5468(6.6%) 5244(6.4%) sig+exp->bigfloat ...ivate/bigfloat/mpfr.rkt:385:0 ??? [97] 4.1% ----------------------------------------------------------------------- ??? [72] 100.0% [78] 4652(5.7%) 0(0.0%) bfcube ...tlock/herbie/src/syntax/syntax.rkt:119:0 bf* [83] 84.9% ...ow-val-first.rkt:357:18 [84] 15.1% ----------------------------------------------------------------------- bigfloat-hash [73] 100.0% [79] 3332(4.0%) 3188(3.9%) bfcanonicalize .../private/bigfloat/mpfr.rkt:155:0 bigfloat->sig+exp [86] 4.3% ----------------------------------------------------------------------- ??? [72] 100.0% [80] 1604(1.9%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [88] 100.0% ----------------------------------------------------------------------- loop [66] 3.5% hash-ref! [70] 13.9% map [62] 21.4% parse-loop12 [81] 22.6% simplify [75] 38.7% [81] 1444(1.8%) 1044(1.3%) parse-loop12 ...s/racket/match/compiler.rkt:410:15 parse-loop12 [81] 22.6% f94 [85] 17.6% loop [66] 17.3% ----------------------------------------------------------------------- ??? [72] 30.1% ulp-difference [68] 30.4% ->flonum [71] 39.5% [82] 658(0.8%) 658(0.8%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ----------------------------------------------------------------------- bfcube [78] 49.6% ??? [72] 50.4% [83] 7960(9.7%) 200(0.2%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [87] 97.5% ----------------------------------------------------------------------- bfcube [78] 28.4% ??? [72] 71.6% [84] 2478(3.0%) 0(0.0%) ...ow-val-first.rkt:357:18 (unknown source) ??? [88] 100.0% ----------------------------------------------------------------------- f94 [85] 13.8% hash-ref! [70] 13.8% simplify [75] 15.2% map [62] 16.4% parse-loop12 [81] 20.3% approximate9 [60] 20.4% [85] 1086(1.3%) 0(0.0%) f94 ...t/collects/racket/match/compiler.rkt:499:40 map [62] 43.2% loop [89] 25.0% f94 [85] 13.8% taylor-invert [8] 9.2% select-handler/no-breaks [91] 4.6% combine-mterms [90] 4.1% ----------------------------------------------------------------------- bfcanonicalize [79] 100.0% [86] 144(0.2%) 144(0.2%) bigfloat->sig+exp ...ivate/bigfloat/mpfr.rkt:370:0 ----------------------------------------------------------------------- loop [66] 0.4% bf* [83] 15.4% ??? [72] 84.2% [87] 50480(61.3%) 32076(39.0%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [92] 24.0% ??? [96] 7.0% bfcbrt [94] 5.5% ----------------------------------------------------------------------- ...higher-order.rkt:373:33 [80] 39.3% ...ow-val-first.rkt:357:18 [84] 60.7% [88] 4082(5.0%) 242(0.3%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [93] 94.1% ----------------------------------------------------------------------- f94 [85] 100.0% [89] 422(0.5%) 0(0.0%) loop .../ztatlock/herbie/src/core/taylor.rkt:262:2 hash-ref! [70] 100.0% ----------------------------------------------------------------------- f94 [85] 100.0% [90] 222(0.3%) 0(0.0%) combine-mterms ...herbie/src/core/reduce.rkt:182:0 for-loop [95] 100.0% ----------------------------------------------------------------------- f94 [85] 100.0% [91] 200(0.2%) 200(0.2%) select-handler/no-breaks .../more-scheme.rkt:163:2 ----------------------------------------------------------------------- ??? [87] 100.0% [92] 12120(14.7%) 7492(9.1%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [97] 38.2% ----------------------------------------------------------------------- ??? [69] 5.7% ??? [88] 94.3% [93] 4074(4.9%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [96] 100.0% ----------------------------------------------------------------------- ??? [87] 100.0% [94] 2770(3.4%) 2290(2.8%) bfcbrt ...lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [97] 17.3% ----------------------------------------------------------------------- combine-mterms [90] 100.0% [95] 222(0.3%) 222(0.3%) for-loop ...tlock/herbie/src/core/reduce.rkt:186:5 ----------------------------------------------------------------------- ->flonum [71] 3.5% ??? [87] 44.7% ??? [93] 51.8% [96] 7860(9.5%) 4860(5.9%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [98] 38.2% ----------------------------------------------------------------------- sig+exp->bigfloat [77] 3.4% bfcbrt [94] 7.4% real->bigfloat [74] 18.1% bfmul [92] 71.0% [97] 6514(7.9%) 6514(7.9%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ----------------------------------------------------------------------- ??? [96] 100.0% [98] 3000(3.6%) 1348(1.6%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [99] 55.1% ----------------------------------------------------------------------- ??? [98] 100.0% [99] 1652(2.0%) 1652(2.0%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 -----------------------------------------------------------------------