Profiling results ----------------- Total cpu time observed: 19418ms (out of 19676ms) Number of samples taken: 84 (once every 231ms) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [27] 100.0% [1] 18824(96.9%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [5] 100.0% ----------------------------------------------------------------------- ??? [27] 100.0% [2] 12274(63.2%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [6] 98.7% finalize-table! [9] 1.3% ----------------------------------------------------------------------- ??? [27] 100.0% [3] 11402(58.7%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [7] 57.2% for-loop [8] 30.1% iterate-egraph!5 [11] 9.1% loop [12] 3.5% ----------------------------------------------------------------------- loop [75] 100.0% [4] 164(0.8%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [77] 66.7% map [68] 33.3% ----------------------------------------------------------------------- profile-thunk14 [1] 99.0% [5] 19014(97.9%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [27] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [6] 12110(62.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [10] 100.0% ----------------------------------------------------------------------- simplify [3] 100.0% [7] 6526(33.6%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [11] 96.9% loop [12] 3.1% ----------------------------------------------------------------------- simplify [3] 100.0% [8] 3436(17.7%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [11] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [9] 164(0.8%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [13] 100.0% ----------------------------------------------------------------------- for-loop [6] 100.0% [10] 12110(62.4%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [14] 94.2% gen-series! [18] 3.3% finalize-iter! [19] 2.5% ----------------------------------------------------------------------- simplify [3] 9.6% for-loop [8] 31.8% simplify-expr [7] 58.6% [11] 10802(55.6%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [15] 96.3% map-enodes [17] 3.7% ----------------------------------------------------------------------- simplify-expr [7] 33.3% simplify [3] 66.7% [12] 600(3.1%) 0(0.0%) loop ...tatlock/herbie/src/core/simplify.rkt:203:2 pass [16] 100.0% ----------------------------------------------------------------------- finalize-table! [9] 100.0% [13] 164(0.8%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 localize-error [20] 100.0% ----------------------------------------------------------------------- run-iter! [10] 100.0% [14] 11402(58.7%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [21] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [11] 100.0% [15] 10398(53.5%) 0(0.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [22] 78.6% loop [23] 19.7% apply-match [28] 1.7% ----------------------------------------------------------------------- loop [12] 100.0% [16] 600(3.1%) 0(0.0%) pass ...tatlock/herbie/src/core/simplify.rkt:193:2 for-loop [24] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [11] 100.0% [17] 404(2.1%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 loop [75] 100.0% ----------------------------------------------------------------------- run-iter! [10] 100.0% [18] 402(2.1%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [25] 100.0% ----------------------------------------------------------------------- run-iter! [10] 100.0% [19] 306(1.6%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [26] 100.0% ----------------------------------------------------------------------- post-process [13] 100.0% [20] 164(0.8%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [77] 100.0% ----------------------------------------------------------------------- simplify! [14] 100.0% [21] 11402(58.7%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [27] 100.0% ----------------------------------------------------------------------- for-loop [22] 48.8% one-iter [15] 51.2% [22] 8172(42.1%) 3240(16.7%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [22] 48.8% match-e [36] 30.2% ----------------------------------------------------------------------- one-iter [15] 100.0% [23] 2046(10.5%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [28] 100.0% ----------------------------------------------------------------------- pass [16] 100.0% [24] 600(3.1%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:196:29 loop [31] 33.3% for-loop [30] 33.3% argmin [32] 33.3% ----------------------------------------------------------------------- gen-series! [18] 100.0% [25] 402(2.1%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [29] 100.0% ----------------------------------------------------------------------- finalize-iter! [19] 100.0% [26] 306(1.6%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 atab-add-altns [33] 51.0% for-loop [34] 49.0% ----------------------------------------------------------------------- for-loop [21] 19.9% run [5] 40.0% [27] 19418(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 39.0% run-improve58 [2] 22.2% simplify [3] 19.9% loop [35] 18.9% ----------------------------------------------------------------------- one-iter [15] 8.1% loop [23] 91.9% [28] 2226(11.5%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 merge-egraph-nodes! [37] 45.0% loop! [38] 19.8% substitute-e [41] 9.1% match-e [36] 9.1% reduce-to-single! [44] 9.0% mk-enode! [45] 8.1% ----------------------------------------------------------------------- for-loop [25] 100.0% [29] 402(2.1%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [39] 100.0% ----------------------------------------------------------------------- for-loop [24] 100.0% [30] 200(1.0%) 200(1.0%) for-loop ...ck/herbie/src/core/simplify.rkt:183:13 ----------------------------------------------------------------------- for-loop [24] 100.0% [31] 200(1.0%) 0(0.0%) loop ...hare/racket/collects/racket/list.rkt:729:4 for-loop [42] 100.0% ----------------------------------------------------------------------- for-loop [24] 100.0% [32] 200(1.0%) 0(0.0%) argmin ...re/racket/collects/racket/list.rkt:743:0 expression-cost [43] 100.0% ----------------------------------------------------------------------- ??? [26] 100.0% [33] 156(0.8%) 0(0.0%) atab-add-altns ...rbie/src/core/alt-table.rkt:50:0 atab-add-altn [40] 100.0% ----------------------------------------------------------------------- ??? [26] 100.0% [34] 150(0.8%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [40] 100.0% ----------------------------------------------------------------------- ??? [27] 100.0% [35] 7144(36.8%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [56] 52.9% loop [46] 41.3% for-loop [50] 5.8% ----------------------------------------------------------------------- apply-match [28] 2.0% for-loop [58] 12.1% for-loop [22] 85.9% [36] 5134(26.4%) 2844(14.6%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [47] 32.2% list-cartesian-product [59] 10.2% for-loop [58] 4.1% ----------------------------------------------------------------------- for-loop [52] 20.0% apply-match [28] 80.0% [37] 1002(5.2%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [48] 60.1% for-loop [52] 20.0% enode-merge! [55] 20.0% ----------------------------------------------------------------------- apply-match [28] 100.0% [38] 440(2.3%) 0(0.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 custom-set-union [49] 100.0% ----------------------------------------------------------------------- taylor-alt [29] 100.0% [39] 402(2.1%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [51] 100.0% ----------------------------------------------------------------------- for-loop [34] 49.0% atab-add-altns [33] 51.0% [40] 306(1.6%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [53] 100.0% ----------------------------------------------------------------------- substitute-e [41] 50.0% apply-match [28] 50.0% [41] 202(1.0%) 202(1.0%) substitute-e ...ck/herbie/src/core/ematch.rkt:71:0 substitute-e [41] 50.0% ----------------------------------------------------------------------- loop [31] 100.0% [42] 200(1.0%) 200(1.0%) for-loop ...ztatlock/herbie/src/programs.rkt:213:2 ----------------------------------------------------------------------- argmin [32] 100.0% [43] 200(1.0%) 200(1.0%) expression-cost ...k/herbie/src/programs.rkt:212:0 ----------------------------------------------------------------------- apply-match [28] 100.0% [44] 200(1.0%) 0(0.0%) reduce-to-single! ...bie/src/core/egraph.rkt:324:0 make-sequence [54] 100.0% ----------------------------------------------------------------------- apply-match [28] 100.0% [45] 180(0.9%) 180(0.9%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 ----------------------------------------------------------------------- loop [35] 100.0% [46] 2952(15.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [57] 74.8% make-exacts* [56] 25.2% ----------------------------------------------------------------------- match-e [36] 100.0% [47] 1866(9.6%) 822(4.2%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [58] 27.5% curried [66] 11.8% loop [75] 10.7% foldl [65] 5.9% list-cartesian-product [59] 5.4% ----------------------------------------------------------------------- merge-egraph-nodes! [37] 100.0% [48] 802(4.1%) 200(1.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [60] 75.1% ----------------------------------------------------------------------- loop! [38] 100.0% [49] 440(2.3%) 0(0.0%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [61] 100.0% ----------------------------------------------------------------------- loop [35] 100.0% [50] 414(2.1%) 0(0.0%) for-loop .../ztatlock/herbie/src/points.rkt:128:18 for-loop [62] 100.0% ----------------------------------------------------------------------- location-do [51] 33.2% for-loop [39] 66.8% [51] 402(2.1%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [63] 66.8% location-do [51] 33.2% ----------------------------------------------------------------------- merge-egraph-nodes! [37] 100.0% [52] 400(2.1%) 0(0.0%) for-loop ...lock/herbie/src/core/egraph.rkt:200:10 merge-egraph-nodes! [37] 100.0% ----------------------------------------------------------------------- atab-add-altn [40] 100.0% [53] 306(1.6%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [64] 100.0% ----------------------------------------------------------------------- reduce-to-single! [44] 100.0% [54] 200(1.0%) 200(1.0%) make-sequence ...ects/racket/private/for.rkt:508:2 ----------------------------------------------------------------------- merge-egraph-nodes! [37] 100.0% [55] 200(1.0%) 0(0.0%) enode-merge! ...ck/herbie/src/core/enode.rkt:100:0 custom-set-intersect! [67] 100.0% ----------------------------------------------------------------------- loop [46] 16.5% loop [35] 83.5% [56] 4522(23.3%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 loop [75] 51.4% map [68] 48.6% ----------------------------------------------------------------------- loop [46] 100.0% [57] 2208(11.4%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [68] 100.0% ----------------------------------------------------------------------- match-e [36] 33.9% for-loop [47] 66.1% [58] 1246(6.4%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [36] 100.0% ----------------------------------------------------------------------- for-loop [47] 24.4% list-cartesian-product [59] 25.6% match-e [36] 50.0% [59] 828(4.3%) 828(4.3%) list-cartesian-product ...src/core/ematch.rkt:20:0 list-cartesian-product [59] 25.6% ----------------------------------------------------------------------- update-leader! [48] 100.0% [60] 602(3.1%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [69] 100.0% ----------------------------------------------------------------------- custom-set-union [49] 100.0% [61] 440(2.3%) 220(1.1%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [72] 50.0% ----------------------------------------------------------------------- for-loop [50] 100.0% [62] 414(2.1%) 190(1.0%) for-loop .../ztatlock/herbie/src/points.rkt:129:20 sample [71] 54.1% ----------------------------------------------------------------------- location-do [51] 100.0% [63] 402(2.1%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 f94 [73] 50.2% loop [74] 49.8% ----------------------------------------------------------------------- best-and-tied-at-points [53] 100.0% [64] 306(1.6%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [70] 100.0% ----------------------------------------------------------------------- for-loop [47] 100.0% [65] 220(1.1%) 220(1.1%) foldl ...et/collects/racket/private/list.rkt:229:4 ----------------------------------------------------------------------- for-loop [47] 100.0% [66] 220(1.1%) 220(1.1%) curried ...cket/collects/racket/function.rkt:71:18 ----------------------------------------------------------------------- enode-merge! [55] 100.0% [67] 200(1.0%) 200(1.0%) custom-set-intersect! ...ivate/set-types.rkt:270:0 ----------------------------------------------------------------------- ??? [4] 3.6% make-exacts* [56] 48.1% loop [57] 48.3% [68] 4568(23.5%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [75] 96.4% ->flonum [89] 3.6% ----------------------------------------------------------------------- for-loop [60] 100.0% [69] 602(3.1%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [76] 100.0% ----------------------------------------------------------------------- errors [64] 100.0% [70] 306(1.6%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [79] 100.0% ----------------------------------------------------------------------- for-loop [62] 100.0% [71] 224(1.2%) 0(0.0%) sample /home/ztatlock/herbie/src/points.rkt:68:0 sample-default [78] 100.0% ----------------------------------------------------------------------- for-loop [61] 100.0% [72] 220(1.1%) 220(1.1%) for-loop ...cts/racket/private/set-types.rkt:178:5 ----------------------------------------------------------------------- f94 [73] 50.0% approximate9 [63] 50.0% [73] 202(1.0%) 202(1.0%) f94 ...t/collects/racket/match/compiler.rkt:499:40 f94 [73] 50.0% ----------------------------------------------------------------------- approximate9 [63] 100.0% [74] 200(1.0%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [77] 100.0% ----------------------------------------------------------------------- ??? [79] 0.0% parse-loop12 [86] 0.1% map [68] 1.0% make-exacts* [56] 1.1% for-loop [47] 1.3% map-enodes [17] 2.8% loop [75] 93.7% [75] 7498(38.6%) 200(1.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [75] 93.7% for-loop [81] 2.8% ??? [79] 1.8% ->flonum [89] 0.3% ??? [4] 0.1% ...e/case-arrow.rkt:150:50 [82] 0.0% real->bigfloat [88] 0.0% ----------------------------------------------------------------------- for-loop [69] 100.0% [76] 602(3.1%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [80] 100.0% ----------------------------------------------------------------------- localize-error [20] 15.0% ??? [84] 18.3% ??? [85] 18.3% loop [74] 18.3% ??? [4] 30.0% [77] 364(1.9%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 parse-loop12 [86] 45.1% ??? [85] 18.3% ??? [84] 18.3% simplify [83] 18.3% ----------------------------------------------------------------------- sample [71] 100.0% [78] 224(1.2%) 0(0.0%) sample-default ...rc/syntax/distributions.rkt:11:0 ??? [94] 100.0% ----------------------------------------------------------------------- for-loop [70] 4.7% loop [75] 95.3% [79] 6536(33.7%) 526(2.7%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [87] 41.6% real->bigfloat [88] 30.6% ??? [102] 7.6% loop [75] 7.4% ->flonum [89] 4.7% ----------------------------------------------------------------------- hash-update! [76] 100.0% [80] 602(3.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [90] 100.0% ----------------------------------------------------------------------- loop [75] 100.0% [81] 404(2.1%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:161:2 setfindf [91] 100.0% ----------------------------------------------------------------------- loop [75] 100.0% [82] 246(1.3%) 246(1.3%) ...e/case-arrow.rkt:150:50 (unknown source) ----------------------------------------------------------------------- hash-ref! [77] 100.0% [83] 200(1.0%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 debug-print [92] 100.0% ----------------------------------------------------------------------- hash-ref! [77] 100.0% [84] 200(1.0%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [77] 100.0% ----------------------------------------------------------------------- hash-ref! [77] 100.0% [85] 200(1.0%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:63:15 hash-ref! [77] 100.0% ----------------------------------------------------------------------- hash-ref! [77] 100.0% [86] 164(0.8%) 0(0.0%) parse-loop12 ...s/racket/match/compiler.rkt:410:15 loop [75] 100.0% ----------------------------------------------------------------------- ??? [79] 100.0% [87] 2720(14.0%) 0(0.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 bffma [93] 40.6% bf* [97] 33.7% ??? [99] 17.1% ...ow-val-first.rkt:357:18 [98] 8.7% ----------------------------------------------------------------------- loop [75] 10.6% ??? [79] 89.4% [88] 2238(11.5%) 2238(11.5%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ----------------------------------------------------------------------- map [68] 16.9% ??? [79] 31.5% loop [75] 51.5% [89] 970(5.0%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [103] 68.5% ??? [94] 31.5% ----------------------------------------------------------------------- ??? [80] 100.0% [90] 602(3.1%) 602(3.1%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 ----------------------------------------------------------------------- for-loop [81] 100.0% [91] 404(2.1%) 202(1.0%) setfindf ...e/ztatlock/herbie/src/common.rkt:173:0 for-loop [95] 50.0% ----------------------------------------------------------------------- simplify [83] 100.0% [92] 200(1.0%) 0(0.0%) debug-print ...ztatlock/herbie/src/debug.rkt:107:0 for-loop [96] 100.0% ----------------------------------------------------------------------- ??? [87] 100.0% [93] 1104(5.7%) 0(0.0%) bffma ...atlock/herbie/src/syntax/syntax.rkt:122:0 bf* [97] 76.6% ...ow-val-first.rkt:357:18 [98] 23.4% ----------------------------------------------------------------------- sample-default [78] 42.3% ->flonum [89] 57.7% [94] 530(2.7%) 530(2.7%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ----------------------------------------------------------------------- setfindf [91] 100.0% [95] 202(1.0%) 202(1.0%) for-loop ...e/ztatlock/herbie/src/common.rkt:174:2 ----------------------------------------------------------------------- debug-print [92] 100.0% [96] 200(1.0%) 200(1.0%) for-loop /home/ztatlock/herbie/src/debug.rkt:113:2 ----------------------------------------------------------------------- bffma [93] 48.0% ??? [87] 52.0% [97] 1762(9.1%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [99] 100.0% ----------------------------------------------------------------------- ??? [87] 47.8% bffma [93] 52.2% [98] 494(2.5%) 0(0.0%) ...ow-val-first.rkt:357:18 (unknown source) ??? [100] 100.0% ----------------------------------------------------------------------- ??? [87] 20.8% bf* [97] 79.2% [99] 2226(11.5%) 0(0.0%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [101] 100.0% ----------------------------------------------------------------------- ...ow-val-first.rkt:357:18 [98]100.0% [100] 494(2.5%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [102] 100.0% ----------------------------------------------------------------------- ??? [99] 100.0% [101] 2226(11.5%) 1494(7.7%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [104] 32.9% ----------------------------------------------------------------------- ??? [100] 49.7% ??? [79] 50.3% [102] 994(5.1%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [103] 100.0% ----------------------------------------------------------------------- ->flonum [89] 40.0% ??? [102] 60.0% [103] 1658(8.5%) 914(4.7%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [105] 44.9% ----------------------------------------------------------------------- bfmul [101] 100.0% [104] 732(3.8%) 732(3.8%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ----------------------------------------------------------------------- ??? [103] 100.0% [105] 744(3.8%) 232(1.2%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [106] 68.8% ----------------------------------------------------------------------- ??? [105] 100.0% [106] 512(2.6%) 512(2.6%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 -----------------------------------------------------------------------