Profiling results ----------------- Total cpu time observed: 12938ms (out of 13144ms) Number of samples taken: 95 (once every 136ms) ==================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ==================================================================== ??? [27] 100.0% [1] 12352(95.5%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [4] 100.0% -------------------------------------------------------------------- ??? [27] 100.0% [2] 9906(76.6%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [5] 74.6% get-final-combination [7] 23.3% loop [34] 2.1% -------------------------------------------------------------------- loop [68] 1.4% ??? [27] 98.6% [3] 7256(56.1%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [6] 71.0% iterate-egraph!5 [10] 17.5% for-loop [8] 11.5% -------------------------------------------------------------------- profile-thunk14 [1] 100.0% [4] 12352(95.5%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [27] 100.0% -------------------------------------------------------------------- run-improve58 [2] 100.0% [5] 7394(57.1%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [9] 100.0% -------------------------------------------------------------------- simplify [3] 100.0% [6] 5154(39.8%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [10] 97.1% loop [12] 2.9% -------------------------------------------------------------------- run-improve58 [2] 100.0% [7] 2308(17.8%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [11] 95.6% extract-alt [13] 4.4% -------------------------------------------------------------------- simplify [3] 100.0% [8] 832(6.4%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [10] 100.0% -------------------------------------------------------------------- for-loop [5] 100.0% [9] 7394(57.1%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [14] 96.8% gen-series! [17] 2.6% finalize-iter! [20] 0.7% -------------------------------------------------------------------- for-loop [8] 11.7% simplify [3] 17.9% simplify-expr [6] 70.4% [10] 7104(54.9%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [15] 96.5% map-enodes [18] 2.1% debug-print [86] 1.3% -------------------------------------------------------------------- get-final-combination [7] 100.0% [11] 2206(17.1%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [16] 100.0% -------------------------------------------------------------------- simplify-expr [6] 100.0% [12] 152(1.2%) 0(0.0%) loop ...tatlock/herbie/src/core/simplify.rkt:203:2 pass [19] 100.0% -------------------------------------------------------------------- get-final-combination [7] 100.0% [13] 102(0.8%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [68] 100.0% -------------------------------------------------------------------- run-iter! [9] 100.0% [14] 7154(55.3%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [21] 100.0% -------------------------------------------------------------------- iterate-egraph!5 [10] 100.0% [15] 6858(53.0%) 0(0.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [22] 47.7% loop [23] 46.9% apply-match [28] 5.4% -------------------------------------------------------------------- split-table [11] 100.0% [16] 2206(17.1%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [74] 86.4% loop [68] 13.6% -------------------------------------------------------------------- run-iter! [9] 100.0% [17] 190(1.5%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [24] 100.0% -------------------------------------------------------------------- iterate-egraph!5 [10] 100.0% [18] 152(1.2%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 loop [68] 100.0% -------------------------------------------------------------------- loop [12] 100.0% [19] 152(1.2%) 0(0.0%) pass ...tatlock/herbie/src/core/simplify.rkt:193:2 for-loop [25] 100.0% -------------------------------------------------------------------- run-iter! [9] 100.0% [20] 50(0.4%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [26] 100.0% -------------------------------------------------------------------- simplify! [14] 100.0% [21] 7154(55.3%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [27] 100.0% -------------------------------------------------------------------- for-loop [22] 48.4% one-iter [15] 51.6% [22] 3270(25.3%) 406(3.1%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [22] 48.4% match-e [33] 41.5% ??? [30] 2.3% -------------------------------------------------------------------- one-iter [15] 100.0% [23] 3216(24.9%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [28] 100.0% -------------------------------------------------------------------- gen-series! [17] 100.0% [24] 190(1.5%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [29] 100.0% -------------------------------------------------------------------- pass [19] 100.0% [25] 152(1.2%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:196:29 loop [31] 100.0% -------------------------------------------------------------------- finalize-iter! [20] 100.0% [26] 50(0.4%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [32] 100.0% -------------------------------------------------------------------- for-loop [21] 19.0% run [4] 39.1% [27] 12938(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 39.1% run-improve58 [2] 29.7% simplify [3] 19.0% loop [34] 12.2% -------------------------------------------------------------------- one-iter [15] 10.4% loop [23] 89.6% [28] 3588(27.7%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 merge-egraph-nodes! [42] 43.1% match-e [33] 27.3% for-loop [35] 14.6% substitute-e [44] 8.8% reduce-to-single! [37] 4.2% loop! [76] 2.0% -------------------------------------------------------------------- for-loop [24] 100.0% [29] 190(1.5%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [36] 100.0% -------------------------------------------------------------------- for-loop [22] 100.0% [30] 152(1.2%) 0(0.0%) ??? /home/ztatlock/herbie/src/core/ematch.rkt:50:5 for-loop [38] 100.0% -------------------------------------------------------------------- for-loop [25] 100.0% [31] 152(1.2%) 0(0.0%) loop ...hare/racket/collects/racket/list.rkt:729:4 expression-cost [39] 100.0% -------------------------------------------------------------------- ??? [26] 100.0% [32] 50(0.4%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [40] 100.0% -------------------------------------------------------------------- apply-match [28] 16.9% for-loop [51] 17.3% for-loop [22] 65.8% [33] 3692(28.5%) 1434(11.1%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [41] 36.6% for-loop [51] 10.9% list-cartesian-product [54] 9.6% constant? [45] 4.1% -------------------------------------------------------------------- run-improve58 [2] 6.3% ??? [27] 93.7% [34] 3236(25.0%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [50] 57.7% loop [43] 32.9% loop [53] 6.3% for-loop [48] 3.2% -------------------------------------------------------------------- apply-match [28] 100.0% [35] 524(4.1%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 mk-enode! [55] 42.4% merge-egraph-nodes! [42] 29.0% substitute-e [44] 28.6% -------------------------------------------------------------------- taylor-alt [29] 100.0% [36] 190(1.5%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [46] 100.0% -------------------------------------------------------------------- apply-match [28] 100.0% [37] 152(1.2%) 152(1.2%) reduce-to-single! ...bie/src/core/egraph.rkt:324:0 -------------------------------------------------------------------- ??? [30] 100.0% [38] 152(1.2%) 152(1.2%) for-loop ...atlock/herbie/src/core/ematch.rkt:51:7 -------------------------------------------------------------------- loop [31] 100.0% [39] 152(1.2%) 0(0.0%) expression-cost ...k/herbie/src/programs.rkt:212:0 compile [47] 100.0% -------------------------------------------------------------------- for-loop [32] 100.0% [40] 50(0.4%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [49]100.0% -------------------------------------------------------------------- match-e [33] 100.0% [41] 1704(13.2%) 868(6.7%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [51] 31.8% list-cartesian-product [54] 14.6% loop [59] 8.8% loop [68] 5.9% -------------------------------------------------------------------- for-loop [58] 4.6% merge-egraph-nodes! [42] 5.9% for-loop [35] 8.9% apply-match [28] 80.5% [42] 1700(13.1%) 100(0.8%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [52] 61.2% for-loop [56] 17.8% merge-egraph-nodes! [42] 5.9% for-loop [58] 4.6% loop! [76] 4.6% -------------------------------------------------------------------- loop [34] 100.0% [43] 1064(8.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [53] 78.0% make-exacts* [50] 22.0% -------------------------------------------------------------------- for-loop [35] 32.3% apply-match [28] 67.7% [44] 464(3.6%) 0(0.0%) substitute-e ...ck/herbie/src/core/ematch.rkt:71:0 mk-enode! [55] 100.0% -------------------------------------------------------------------- match-e [33] 100.0% [45] 250(1.9%) 250(1.9%) constant? ...ck/herbie/src/syntax/syntax.rkt:221:0 -------------------------------------------------------------------- for-loop [36] 100.0% [46] 190(1.5%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [57] 100.0% -------------------------------------------------------------------- expression-cost [39] 100.0% [47] 152(1.2%) 0(0.0%) compile .../ztatlock/herbie/src/programs.rkt:189:0 hash-ref! [64] 100.0% -------------------------------------------------------------------- loop [34] 100.0% [48] 102(0.8%) 0(0.0%) for-loop .../ztatlock/herbie/src/points.rkt:128:18 for-loop [60] 100.0% -------------------------------------------------------------------- atab-add-altn [40] 100.0% [49] 50(0.4%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [61] 100.0% -------------------------------------------------------------------- loop [43] 11.1% loop [34] 88.9% [50] 2100(16.2%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [62] 61.6% loop [68] 38.4% -------------------------------------------------------------------- match-e [33] 45.4% for-loop [41] 54.6% [51] 1380(10.7%) 152(1.2%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [33] 89.0% -------------------------------------------------------------------- merge-egraph-nodes! [42] 100.0% [52] 1140(8.8%) 0(0.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [63] 86.8% hash-ref! [64] 13.2% -------------------------------------------------------------------- loop [34] 19.7% loop [43] 80.3% [53] 1034(8.0%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [62] 100.0% -------------------------------------------------------------------- list-cartesian-product [54] 11.2% for-loop [41] 33.5% match-e [33] 55.3% [54] 738(5.7%) 738(5.7%) list-cartesian-product ...src/core/ematch.rkt:20:0 list-cartesian-product [54] 11.2% -------------------------------------------------------------------- for-loop [35] 32.4% substitute-e [44] 67.6% [55] 686(5.3%) 686(5.3%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 -------------------------------------------------------------------- merge-egraph-nodes! [42] 100.0% [56] 302(2.3%) 302(2.3%) for-loop ...tlock/herbie/src/core/egraph.rkt:232:6 -------------------------------------------------------------------- location-do [46] 100.0% [57] 190(1.5%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 f94 [65] 100.0% -------------------------------------------------------------------- merge-egraph-nodes! [42] 100.0% [58] 158(1.2%) 0(0.0%) for-loop ...lock/herbie/src/core/egraph.rkt:200:10 merge-egraph-nodes! [42] 100.0% -------------------------------------------------------------------- for-loop [41] 100.0% [59] 150(1.2%) 150(1.2%) loop ...e/racket/collects/racket/function.rkt:53:6 -------------------------------------------------------------------- for-loop [48] 100.0% [60] 102(0.8%) 0(0.0%) for-loop .../ztatlock/herbie/src/points.rkt:129:20 sample-double [66] 100.0% -------------------------------------------------------------------- best-and-tied-at-points [49]100.0% [61] 50(0.4%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [67] 100.0% -------------------------------------------------------------------- loop [53] 44.4% make-exacts* [50] 55.6% [62] 2328(18.0%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [68] 100.0% -------------------------------------------------------------------- update-leader! [52] 100.0% [63] 990(7.7%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [69] 100.0% -------------------------------------------------------------------- compile [47] 16.8% ??? [70] 33.6% update-leader! [52] 49.7% [64] 302(2.3%) 302(2.3%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [70] 33.6% -------------------------------------------------------------------- approximate9 [57] 100.0% [65] 190(1.5%) 0(0.0%) f94 ...t/collects/racket/match/compiler.rkt:499:40 loop [68] 100.0% -------------------------------------------------------------------- for-loop [60] 100.0% [66] 102(0.8%) 0(0.0%) sample-double .../src/syntax/distributions.rkt:8:0 random-exp [71] 100.0% -------------------------------------------------------------------- errors [61] 100.0% [67] 50(0.4%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ulp-difference [72] 100.0% -------------------------------------------------------------------- make-exacts* [50] 0.1% loop! [76] 0.4% map-enodes [18] 1.9% for-loop [41] 2.5% extract-alt [13] 2.5% f94 [65] 4.7% map [62] 5.6% infer-splitpoints4 [16] 7.4% loop [68] 74.8% [68] 4048(31.3%) 218(1.7%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [68] 74.8% option-on-expr [74] 7.4% ??? [73] 5.6% simplify [77] 4.7% simplify [3] 2.5% curried [78] 1.9% loop! [76] 0.4% ->flonum [79] 0.0% -------------------------------------------------------------------- for-loop [63] 100.0% [69] 990(7.7%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [75] 100.0% -------------------------------------------------------------------- hash-ref! [64] 100.0% [70] 152(1.2%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 hash-ref! [64] 100.0% -------------------------------------------------------------------- sample-double [66] 100.0% [71] 102(0.8%) 102(0.8%) random-exp ...ztatlock/herbie/src/common.rkt:153:0 -------------------------------------------------------------------- for-loop [67] 100.0% [72] 50(0.4%) 0(0.0%) ulp-difference ...atlock/herbie/src/float.rkt:19:0 ??? [80] 100.0% -------------------------------------------------------------------- loop [68] 100.0% [73] 2904(22.4%) 716(5.5%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [83] 26.3% ??? [84] 24.9% real->bigfloat [85] 20.0% new [88] 4.1% -------------------------------------------------------------------- loop [68] 13.6% infer-splitpoints4 [16] 86.4% [74] 2206(17.1%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [81] 100.0% -------------------------------------------------------------------- for-loop [69] 100.0% [75] 990(7.7%) 152(1.2%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [82] 84.6% -------------------------------------------------------------------- loop [68] 15.4% apply-match [28] 15.4% merge-egraph-nodes! [42] 69.3% [76] 228(1.8%) 70(0.5%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 custom-set-union [87] 69.3% loop [68] 15.4% -------------------------------------------------------------------- loop [68] 100.0% [77] 190(1.5%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 debug-print [86] 100.0% -------------------------------------------------------------------- loop [68] 100.0% [78] 152(1.2%) 152(1.2%) curried ...cket/collects/racket/function.rkt:71:18 -------------------------------------------------------------------- loop [68] 100.0% [79] 112(0.9%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [98] 100.0% -------------------------------------------------------------------- ulp-difference [72] 100.0% [80] 50(0.4%) 50(0.4%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 -------------------------------------------------------------------- option-on-expr [74] 100.0% [81] 2206(17.1%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [89] 100.0% -------------------------------------------------------------------- hash-update! [75] 100.0% [82] 838(6.5%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [90] 100.0% -------------------------------------------------------------------- ??? [73] 100.0% [83] 764(5.9%) 0(0.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 bf* [91] 52.9% ??? [94] 47.1% -------------------------------------------------------------------- ??? [73] 100.0% [84] 724(5.6%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [98] 100.0% -------------------------------------------------------------------- ??? [73] 100.0% [85] 582(4.5%) 234(1.8%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [102] 59.8% -------------------------------------------------------------------- iterate-egraph!5 [10] 33.1% simplify [77] 66.9% [86] 284(2.2%) 284(2.2%) debug-print ...ztatlock/herbie/src/debug.rkt:107:0 -------------------------------------------------------------------- loop! [76] 100.0% [87] 158(1.2%) 0(0.0%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [92] 100.0% -------------------------------------------------------------------- ??? [73] 100.0% [88] 118(0.9%) 118(0.9%) new ...cket/contract/private/case-arrow.rkt:227:53 -------------------------------------------------------------------- sort-context-on-expr [81] 100.0% [89] 2206(17.1%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [93] 72.3% loop [96] 27.7% -------------------------------------------------------------------- ??? [82] 100.0% [90] 838(6.5%) 838(6.5%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 -------------------------------------------------------------------- ??? [83] 100.0% [91] 404(3.1%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [94] 100.0% -------------------------------------------------------------------- custom-set-union [87] 100.0% [92] 158(1.2%) 0(0.0%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [95] 100.0% -------------------------------------------------------------------- sort [89] 44.0% copying-mergesort [93] 56.0% [93] 1594(12.3%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [93] 56.0% loop [96] 26.7% jloop [97] 17.3% -------------------------------------------------------------------- ??? [83] 47.1% bf* [91] 52.9% [94] 764(5.9%) 0(0.0%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [99] 84.3% ??? [98] 15.7% -------------------------------------------------------------------- for-loop [92] 100.0% [95] 158(1.2%) 158(1.2%) for-loop ...cts/racket/private/set-types.rkt:178:5 -------------------------------------------------------------------- copying-mergesort [93] 44.6% sort [89] 55.4% [96] 1104(8.5%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [100] 100.0% -------------------------------------------------------------------- copying-mergesort [93] 100.0% [97] 1102(8.5%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [100] 100.0% -------------------------------------------------------------------- ->flonum [79] 11.7% ??? [94] 12.6% ??? [84] 75.7% [98] 956(7.4%) 232(1.8%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [101] 54.4% ??? [103] 21.3% -------------------------------------------------------------------- ??? [94] 100.0% [99] 644(5.0%) 526(4.1%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [102] 18.3% -------------------------------------------------------------------- jloop [97] 50.0% loop [96] 50.0% [100] 2206(17.1%) 102(0.8%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [104] 95.4% -------------------------------------------------------------------- ??? [98] 100.0% [101] 520(4.0%) 408(3.2%) ??? ...ects/racket/contract/private/prop.rkt:489:4 ??? [106] 21.5% -------------------------------------------------------------------- bfmul [99] 25.3% real->bigfloat [85] 74.7% [102] 466(3.6%) 466(3.6%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 -------------------------------------------------------------------- ??? [98] 100.0% [103] 204(1.6%) 0(0.0%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [105] 100.0% -------------------------------------------------------------------- ??? [100] 100.0% [104] 2104(16.3%) 2002(15.5%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 parse-lambda [107] 4.8% -------------------------------------------------------------------- ??? [103] 100.0% [105] 204(1.6%) 204(1.6%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 -------------------------------------------------------------------- ??? [101] 100.0% [106] 112(0.9%) 112(0.9%) ??? ...lects/racket/contract/private/orc.rkt:73:14 -------------------------------------------------------------------- eval-prog [104] 100.0% [107] 102(0.8%) 102(0.8%) parse-lambda ...llects/racket/private/kw.rkt:393:2 --------------------------------------------------------------------