Profiling results ----------------- Total cpu time observed: 18030ms (out of 18360ms) Number of samples taken: 77 (once every 234ms) ====================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ====================================================================== ??? [34] 100.0% [1] 16924(93.9%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [9] 100.0% ---------------------------------------------------------------------- ??? [34] 100.0% [2] 10696(59.3%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [10] 82.7% get-final-combination [13] 15.4% loop [41] 1.9% ---------------------------------------------------------------------- ??? [34] 100.0% [3] 6026(33.4%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 iterate-egraph!5 [17] 55.3% simplify-expr [11] 44.7% ---------------------------------------------------------------------- hash-ref! [90] 100.0% [4] 1810(10.0%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [12] 100.0% ---------------------------------------------------------------------- hash-ref! [90] 100.0% [5] 1610(8.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:392:23 for-loop [14] 100.0% ---------------------------------------------------------------------- copying-mergesort [54] 100.0% [6] 604(3.3%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [69] 100.0% ---------------------------------------------------------------------- hash-ref! [90] 100.0% [7] 240(1.3%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 loop [72] 100.0% ---------------------------------------------------------------------- hash-ref! [90] 100.0% [8] 202(1.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:483:23 for-loop [15] 100.0% ---------------------------------------------------------------------- profile-thunk14 [1] 100.0% [9] 16924(93.9%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [34] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [10] 8844(49.1%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [16] 100.0% ---------------------------------------------------------------------- simplify [3] 100.0% [11] 2694(14.9%) 200(1.1%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [17] 92.6% ---------------------------------------------------------------------- ??? [4] 100.0% [12] 1810(10.0%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [90] 89.0% simplify [18] 11.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [13] 1652(9.2%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [19] 100.0% ---------------------------------------------------------------------- ??? [5] 100.0% [14] 1610(8.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:396:33 for-loop [20] 100.0% ---------------------------------------------------------------------- ??? [8] 100.0% [15] 202(1.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:487:35 parse-loop50 [77] 100.0% ---------------------------------------------------------------------- for-loop [10] 100.0% [16] 8844(49.1%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [21] 68.1% gen-series! [23] 25.0% finalize-iter! [26] 6.8% ---------------------------------------------------------------------- simplify-expr [11] 42.8% simplify [3] 57.2% [17] 5826(32.3%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [22] 96.6% map-enodes [27] 3.4% ---------------------------------------------------------------------- for-loop [12] 9.0% hash-ref! [90] 91.0% [18] 2214(12.3%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 parse-loop50 [77] 54.6% f16 [25] 45.4% ---------------------------------------------------------------------- get-final-combination [13] 100.0% [19] 1652(9.2%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [24] 100.0% ---------------------------------------------------------------------- for-loop [14] 100.0% [20] 1610(8.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:398:39 hash-ref! [90] 100.0% ---------------------------------------------------------------------- run-iter! [16] 100.0% [21] 6026(33.4%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [28] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [17] 100.0% [22] 5626(31.2%) 444(2.5%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 loop [29] 43.3% for-loop [30] 41.7% apply-match [35] 7.1% ---------------------------------------------------------------------- run-iter! [16] 100.0% [23] 2214(12.3%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [31] 100.0% ---------------------------------------------------------------------- split-table [19] 100.0% [24] 1652(9.2%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [32] 100.0% ---------------------------------------------------------------------- map [67] 30.2% simplify [18] 69.8% [25] 1006(5.6%) 402(2.2%) f16 ...t/collects/racket/match/compiler.rkt:499:40 map [67] 73.3% ---------------------------------------------------------------------- run-iter! [16] 100.0% [26] 604(3.3%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [33] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [17] 100.0% [27] 200(1.1%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 loop [72] 100.0% ---------------------------------------------------------------------- simplify! [21] 100.0% [28] 6026(33.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [34] 100.0% ---------------------------------------------------------------------- one-iter [22] 100.0% [29] 2434(13.5%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [35] 100.0% ---------------------------------------------------------------------- for-loop [30] 50.0% one-iter [22] 50.0% [30] 2346(13.0%) 422(2.3%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [30] 50.0% match-e [42] 41.0% ---------------------------------------------------------------------- gen-series! [23] 100.0% [31] 2214(12.3%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [36] 100.0% ---------------------------------------------------------------------- infer-splitpoints4 [24] 100.0% [32] 1652(9.2%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [37] 74.3% err-lsts->split-indices [39] 13.4% pick-errors [40] 12.2% ---------------------------------------------------------------------- finalize-iter! [26] 100.0% [33] 604(3.3%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [38] 100.0% ---------------------------------------------------------------------- for-loop [28] 12.2% run [9] 42.4% [34] 18030(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 42.4% run-improve58 [2] 25.1% loop [41] 20.3% simplify [3] 12.2% ---------------------------------------------------------------------- one-iter [22] 14.2% loop [29] 85.8% [35] 2836(15.7%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 merge-egraph-nodes! [53] 39.1% match-e [42] 29.8% mk-enode! [46] 15.7% for-loop [48] 7.8% loop! [80] 7.7% ---------------------------------------------------------------------- for-loop [31] 100.0% [36] 2214(12.3%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [43] 100.0% ---------------------------------------------------------------------- option-on-expr [32] 100.0% [37] 1228(6.8%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [44] 100.0% ---------------------------------------------------------------------- ??? [33] 100.0% [38] 604(3.3%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [45] 100.0% ---------------------------------------------------------------------- option-on-expr [32] 100.0% [39] 222(1.2%) 0(0.0%) err-lsts->split-indices .../core/regimes.rkt:224:0 add-splitpoint [47] 100.0% ---------------------------------------------------------------------- option-on-expr [32] 100.0% [40] 202(1.1%) 0(0.0%) pick-errors ...k/herbie/src/core/regimes.rkt:173:0 for-loop [49] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 2.7% ??? [34] 97.3% [41] 7534(41.8%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [57] 46.6% loop [50] 35.6% loop [58] 17.8% ---------------------------------------------------------------------- apply-match [35] 15.3% for-loop [60] 18.9% for-loop [30] 65.8% [42] 2770(15.4%) 1264(7.0%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [52] 50.7% for-loop [60] 3.6% ---------------------------------------------------------------------- taylor-alt [36] 100.0% [43] 2214(12.3%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [51] 100.0% ---------------------------------------------------------------------- sort-context-on-expr [37] 100.0% [44] 1228(6.8%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [54] 67.1% loop [62] 32.9% ---------------------------------------------------------------------- for-loop [38] 100.0% [45] 604(3.3%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [55] 100.0% ---------------------------------------------------------------------- apply-match [35] 100.0% [46] 444(2.5%) 444(2.5%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 ---------------------------------------------------------------------- err-lsts->split-indices [39] 100.0% [47] 222(1.2%) 0(0.0%) add-splitpoint ...erbie/src/core/regimes.rkt:237:2 for-loop [56] 100.0% ---------------------------------------------------------------------- apply-match [35] 100.0% [48] 220(1.2%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 merge-egraph-nodes! [53] 100.0% ---------------------------------------------------------------------- pick-errors [40] 100.0% [49] 202(1.1%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:176:4 eval-prog [73] 100.0% ---------------------------------------------------------------------- loop [41] 100.0% [50] 2682(14.9%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [58] 51.0% make-exacts* [57] 40.0% eval-prog [73] 8.9% ---------------------------------------------------------------------- location-do [51] 18.2% for-loop [43] 81.8% [51] 2214(12.3%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [59] 81.8% location-do [51] 18.2% ---------------------------------------------------------------------- match-e [42] 100.0% [52] 1506(8.4%) 1284(7.1%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [60] 28.0% list-cartesian-product [64] 7.4% ---------------------------------------------------------------------- for-loop [48] 5.5% merge-egraph-nodes! [53] 11.0% apply-match [35] 83.4% [53] 1328(7.4%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [61] 66.7% loop! [80] 22.2% merge-egraph-nodes! [53] 11.0% ---------------------------------------------------------------------- sort [44] 27.2% copying-mergesort [54] 72.8% [54] 824(4.6%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [54] 72.8% jloop [6] 18.3% loop [62] 8.9% ---------------------------------------------------------------------- atab-add-altn [45] 100.0% [55] 604(3.3%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [63] 66.6% for-loop [66] 33.4% ---------------------------------------------------------------------- add-splitpoint [47] 100.0% [56] 222(1.2%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:239:4 for-loop [65] 100.0% ---------------------------------------------------------------------- loop [50] 23.4% loop [41] 76.6% [57] 4588(25.4%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 loop [72] 70.3% map [67] 29.7% ---------------------------------------------------------------------- loop [41] 49.4% loop [50] 50.6% [58] 2706(15.0%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [67] 100.0% ---------------------------------------------------------------------- location-do [51] 100.0% [59] 2214(12.3%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [68] 100.0% ---------------------------------------------------------------------- match-e [42] 19.3% for-loop [52] 80.7% [60] 1046(5.8%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [42] 100.0% ---------------------------------------------------------------------- merge-egraph-nodes! [53] 100.0% [61] 886(4.9%) 0(0.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [70] 100.0% ---------------------------------------------------------------------- copying-mergesort [54] 35.3% sort [44] 64.7% [62] 624(3.5%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [69] 100.0% ---------------------------------------------------------------------- best-and-tied-at-points [55] 100.0% [63] 402(2.2%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [71] 100.0% ---------------------------------------------------------------------- for-loop [52] 100.0% [64] 222(1.2%) 222(1.2%) list-cartesian-product ...src/core/ematch.rkt:20:0 ---------------------------------------------------------------------- for-loop [56] 100.0% [65] 222(1.2%) 222(1.2%) for-loop ...lock/herbie/src/core/regimes.rkt:243:8 ---------------------------------------------------------------------- best-and-tied-at-points [55] 100.0% [66] 202(1.1%) 202(1.1%) for-loop ...k/herbie/src/core/alt-table.rkt:124:16 ---------------------------------------------------------------------- parse-loop50 [77] 11.4% f16 [25] 11.5% make-exacts* [57] 25.8% loop [58] 51.3% [67] 5274(29.3%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [72] 86.7% f16 [25] 7.0% parse-loop50 [77] 5.7% simplify-node [75] 0.6% ---------------------------------------------------------------------- approximate9 [59] 100.0% [68] 2214(12.3%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [90] 100.0% ---------------------------------------------------------------------- jloop [6] 49.2% loop [62] 50.8% [69] 1228(6.8%) 200(1.1%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [73] 83.7% ---------------------------------------------------------------------- update-leader! [61] 100.0% [70] 886(4.9%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [74] 100.0% ---------------------------------------------------------------------- errors [63] 100.0% [71] 402(2.2%) 202(1.1%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [76] 49.8% ---------------------------------------------------------------------- parse-loop50 [77] 1.8% map-enodes [27] 2.1% make-exacts* [57] 2.3% ??? [7] 2.6% loop! [80] 3.3% map [67] 8.0% loop [72] 79.9% [72] 9400(52.1%) 682(3.8%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [72] 79.9% parse-loop50 [77] 8.2% ??? [76] 3.4% loop! [80] 3.3% hash-ref! [90] 2.6% for-loop [81] 2.1% ->flonum [78] 0.4% ---------------------------------------------------------------------- for-loop [49] 13.7% loop [50] 16.3% ??? [69] 69.9% [73] 1470(8.2%) 1230(6.8%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 hash-ref! [90] 16.3% ---------------------------------------------------------------------- for-loop [70] 100.0% [74] 886(4.9%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [79] 100.0% ---------------------------------------------------------------------- map [67] 100.0% [75] 204(1.1%) 204(1.1%) simplify-node ...k/herbie/src/core/reduce.rkt:41:0 ---------------------------------------------------------------------- for-loop [71] 3.7% loop [72] 96.3% [76] 5438(30.2%) 886(4.9%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [82] 66.4% real->bigfloat [84] 17.3% ---------------------------------------------------------------------- map [67] 9.2% for-loop [15] 11.2% loop [72] 16.1% simplify [18] 18.0% parse-loop50 [77] 45.6% [77] 1810(10.0%) 1608(8.9%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 parse-loop50 [77] 45.6% map [67] 12.9% for-loop [88] 11.2% loop [72] 6.0% ---------------------------------------------------------------------- loop [72] 100.0% [78] 1374(7.6%) 196(1.1%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [83] 68.9% ??? [87] 16.9% ---------------------------------------------------------------------- for-loop [74] 100.0% [79] 886(4.9%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [85] 100.0% ---------------------------------------------------------------------- apply-match [35] 16.5% merge-egraph-nodes! [53] 27.9% loop [72] 55.6% [80] 660(3.7%) 222(1.2%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 loop [72] 55.6% set [86] 27.6% ---------------------------------------------------------------------- loop [72] 100.0% [81] 200(1.1%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:161:2 eval-const-expr [89] 100.0% ---------------------------------------------------------------------- ??? [76] 100.0% [82] 3610(20.0%) 200(1.1%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [94] 82.3% ...higher-order.rkt:373:33 [92] 6.6% bf* [93] 5.5% ---------------------------------------------------------------------- ->flonum [78] 100.0% [83] 946(5.2%) 946(5.2%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ---------------------------------------------------------------------- ??? [76] 100.0% [84] 942(5.2%) 942(5.2%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ---------------------------------------------------------------------- hash-update! [79] 100.0% [85] 886(4.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [91] 100.0% ---------------------------------------------------------------------- loop! [80] 100.0% [86] 438(2.4%) 438(2.4%) set ...collects/racket/private/set-types.rkt:982:0 ---------------------------------------------------------------------- ->flonum [78] 100.0% [87] 232(1.3%) 0(0.0%) ??? ...-racket/utils/simple-result-arrow.rkt:47:15 ??? [102] 100.0% ---------------------------------------------------------------------- parse-loop50 [77] 100.0% [88] 202(1.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:490:59 hash-ref! [90] 100.0% ---------------------------------------------------------------------- for-loop [81] 100.0% [89] 200(1.1%) 0(0.0%) eval-const-expr ...k/herbie/src/programs.rkt:180:0 ??? [94] 100.0% ---------------------------------------------------------------------- for-loop [88] 1.4% eval-prog [73] 2.4% loop [72] 7.3% for-loop [20] 15.6% for-loop [12] 20.2% ??? [95] 26.5% loop [68] 26.5% [90] 2454(13.6%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [95] 26.5% simplify [18] 23.8% ??? [4] 22.9% ??? [5] 15.6% ??? [7] 7.3% bigfloat-hash [97] 2.4% ??? [8] 1.4% ---------------------------------------------------------------------- ??? [85] 100.0% [91] 886(4.9%) 444(2.5%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 update-en-expr [96] 49.9% ---------------------------------------------------------------------- ??? [82] 100.0% [92] 240(1.3%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [98] 100.0% ---------------------------------------------------------------------- ??? [82] 100.0% [93] 200(1.1%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [94] 100.0% ---------------------------------------------------------------------- bf* [93] 5.9% eval-const-expr [89] 5.9% ??? [82] 88.1% [94] 3370(18.7%) 704(3.9%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [99] 73.3% ??? [103] 5.8% ---------------------------------------------------------------------- hash-ref! [90] 100.0% [95] 2214(12.3%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [90] 100.0% ---------------------------------------------------------------------- for-loop [91] 100.0% [96] 442(2.5%) 442(2.5%) update-en-expr ...herbie/src/core/egraph.rkt:211:0 ---------------------------------------------------------------------- hash-ref! [90] 100.0% [97] 240(1.3%) 0(0.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 sig+exp->bigfloat [100] 100.0% ---------------------------------------------------------------------- ...higher-order.rkt:373:33 [92]100.0% [98] 240(1.3%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [101] 100.0% ---------------------------------------------------------------------- ??? [94] 100.0% [99] 2470(13.7%) 1312(7.3%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [102] 46.9% ---------------------------------------------------------------------- bigfloat-hash [97] 100.0% [100] 240(1.3%) 240(1.3%) sig+exp->bigfloat ...ivate/bigfloat/mpfr.rkt:385:0 ---------------------------------------------------------------------- ??? [98] 100.0% [101] 240(1.3%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [103] 100.0% ---------------------------------------------------------------------- ??? [87] 16.7% bfmul [99] 83.3% [102] 1390(7.7%) 1390(7.7%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ---------------------------------------------------------------------- ??? [94] 45.0% ??? [101] 55.0% [103] 436(2.4%) 436(2.4%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ----------------------------------------------------------------------