Posts by apohawk Universe@Home

1) Message boards : Number crunching : extreme long wu's (Message 2558) Posted 10 Jan 2018 by apohawk Post: I noticed long work units on only one system of mine. Linux, Ubuntu x86_64 16.04 LTS (for amdgpu driver), AMD Ryzen 7 1700. I have 4 tasks hanging right now. Their slots//error.dat is as follows: error: function Lzahbf(M,Mc) should not be called for HM stars error: function Lzahbf(M,Mc) should not be called for HM stars unexpected remnant case for K=5-6: 456132 error: function Lzahbf(M,Mc) should not be called for HM stars error: function Lzahbf(M,Mc) should not be called for HM stars unexpected remnant case for K=5-6: 490907 error: function Lzahbf(M,Mc) should not be called for HM stars error: function Lzahbf(M,Mc) should not be called for HM stars unexpected remnant case for K=5-6: 739907 error: function Lzahbf(M,Mc) should not be called for HM stars error: function Lzahbf(M,Mc) should not be called for HM stars unexpected remnant case for K=5-6: 615205 Reading through the thread i noticed, that the errrors reported in error.dat changed over time, probably being resolved in app or in input data, but the problem remains. So it is probably a layer up, something messed up with handling of the errors. I also checked what working and "hanging" tasks do. strace looks similiar, but ltrace is very different: Working task's ltrace sample (ltrace -fp PID): [pid 20453] pow(0x7f0d884383a0, 1022, 0x7f0d88491d00, 384) = 19 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40c0000000000000, 333) = 279 [pid 20453] log10(0x7f0d884383a0, 0x7f0d884363a0, 0x4010000000000000, 61) = 0x7f0d88492440 [pid 20453] pow(0x7f0d884383a0, 1022, 0x7f0d88491d00, 384) = 19 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40c0000000000000, 333) = 631 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x4000000000000000, 291) = 83 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x4040000000000000, 33) = 347 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x3fd0000000000000, 425) = 395 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x3fe0000000000000, 421) = 0xbff0000000000000 [pid 20453] pow(0x7f0d884383a0, 0x4002005e, 0x4002005e, 0x4002005e573c3572) = 777 [pid 20453] log10(0x7f0d884383a0, 0x7f0d884363a0, 0x4090000000000000, 377) = 0x7f0d88492440 [pid 20453] pow(0x7f0d884383a0, 1022, 0x7f0d88491d00, 384) = 19 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40c0000000000000, 333) = 279 [pid 20453] log10(0x7f0d884383a0, 0x7f0d884363a0, 0x4010000000000000, 61) = 0x7f0d88492440 [pid 20453] pow(0x7f0d884383a0, 1022, 0x7f0d88491d00, 384) = 19 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40c0000000000000, 333) = 631 [pid 20454] gettimeofday(0x888cde30, 0) = 0 [pid 20454] gettimeofday(0x888cde30, 0) = 0 [pid 20454] usleep(100000 <unfinished ...> [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x4000000000000000, 291) = 83 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x4040000000000000, 33) = 725 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x3f40000000000000, 553) = 333 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40e0000000000000, 483) = 421 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x4180000000000000, 39) = 373 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40b0000000000000, 527) = 903 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40f0000000000000, 319) = 725 [pid 20453] log10(0x7f0d884383a0, 0x7f0d884363a0, 0x3f40000000000000, 553) = 0x7f0d88492440 [pid 20453] pow(0x7f0d884383a0, 1022, 0x7f0d88491d00, 384) = 19 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40c0000000000000, 333) = 431 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x4000000000000000, 139) = 61 [pid 20453] log10(0x7f0d884383a0, 0x7f0d884363a0, 0x3ff0000000000000, 605) = 0x7f0d88492440 [pid 20453] pow(0x7f0d884383a0, 1022, 0x7f0d88491d00, 384) = 19 [pid 20453] pow(0x7f0d884383a0, 0x7f0d884363a0, 0x40c0000000000000, 333) = 279 and so on... "hanging" task's ltrace sample (ltrace -fp PID): [pid 13889] free(0x1a4e560) = <void> [pid 13889] free(0x1a4e530) = <void> [pid 13889] free(0x1a4e500) = <void> [pid 13889] free(0x1a4e4d0) = <void> [pid 13889] free(0x1a4e4a0) = <void> [pid 13889] free(0x1a4e470) = <void> [pid 13889] __isnan(0xffffffff, 0x7fc692dddb30, 0x1a4e490, 0) = 1 [pid 13889] malloc(40) = 0x1a4e470 [pid 13889] malloc(40) = 0x1a4e4a0 [pid 13889] malloc(40) = 0x1a4e4d0 [pid 13889] malloc(40) = 0x1a4e500 [pid 13889] malloc(40) = 0x1a4e530 [pid 13889] malloc(40) = 0x1a4e560 [pid 13889] free(0x1a4e560) = <void> [pid 13889] free(0x1a4e530) = <void> [pid 13889] free(0x1a4e500) = <void> [pid 13889] free(0x1a4e4d0) = <void> [pid 13889] free(0x1a4e4a0) = <void> [pid 13889] free(0x1a4e470) = <void> [pid 13889] __isnan(0xffffffff, 0x7fc692dddb30, 0x1a4e490, 0) = 1 [pid 13889] malloc(40) = 0x1a4e470 [pid 13889] malloc(40) = 0x1a4e4a0 [pid 13889] malloc(40) = 0x1a4e4d0 [pid 13889] malloc(40) = 0x1a4e500 [pid 13889] malloc(40) = 0x1a4e530 [pid 13889] malloc(40) = 0x1a4e560 [pid 13889] free(0x1a4e560) = <void> [pid 13889] free(0x1a4e530) = <void> [pid 13889] free(0x1a4e500) = <void> [pid 13889] free(0x1a4e4d0) = <void> [pid 13889] free(0x1a4e4a0) = <void> [pid 13889] free(0x1a4e470) = <void> [pid 13889] __isnan(0xffffffff, 0x7fc692dddb30, 0x1a4e490, 0) = 1 Looks like infinite loop to me. "hanging" task's gdb backtrace taken at random: (gdb) bt #0 get_T (L=L@entry=651959.17475758004, R=R@entry=1.60374190786905) at singl.c:4688 #1 0x0000000000418274 in dorbdt (t=<optimized out>, y=y@entry=0x1a4e560, dydx=dydx@entry=0x1a4e4d0, KTa=KTa@entry=0, KTb=KTb@entry=2.9179459219507452e-10, Ma=Ma@entry=1.4399999999999999, Mb=Mb@entry=24.12289019752216, dMa=dMa@entry=nan(0x8000000000000), dMb=dMb@entry=0.55262531449484709, Ia=Ia@entry=-nan(0x8000000000000), Ib=Ib@entry=4.6753715902533024, Ra=Ra@entry=1.60374190786905, Rb=Rb@entry=1.6037419078694282, Rca=Rca@entry=inf, Rcb=Rcb@entry=0, wcrit_a=wcrit_a@entry=0, wcrit_b=wcrit_b@entry=0, La=La@entry=651959.17475758004, Lb=Lb@entry=651959.17475832114, Ka=Ka@entry=-978270896, Kb=Kb@entry=7, magb_a=magb_a@entry=0, magb_b=magb_b@entry=0) at binary.cpp:7817 #2 0x000000000043244c in rkck1 (y=0x1a4f190, dydx=0x1a4f1c0, n=4, x=3.4806341581987525, h=<optimized out>, yout=0x1a4f220, yerr=0x1a4f1f0, derivs1=0x4181d0 <dorbdt(double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, int, int, int, int)>, KTa=0, KTb=2.9179459219507452e-10, Ma=1.4399999999999999, Mb=24.12289019752216, dMa=nan(0x8000000000000), dMb=0.55262531449484709, Ia=-nan(0x8000000000000), Ib=4.6753715902533024, Ra=1.60374190786905, Rb=1.6037419078694282, Rca=inf, Rcb=0, wcrit_a=0, wcrit_b=0, La=651959.17475758004, Lb=651959.17475832114, Ka=-978270896, Kb=7, magb_a=0, magb_b=0) at binary.cpp:8427 #3 0x000000000043398f in rkqs1 (y=y@entry=0x1a4f190, dydx=dydx@entry=0x1a4f1c0, n=n@entry=4, x=x@entry=0x7ffdc5b0b9b0, htry=0, eps=nan(0x8000000000000), eps@entry=0.001, yscal=yscal@entry=0x1a4f160, hdid=hdid@entry=0x7ffdc5b0b9d0, hnext=hnext@entry=0x7ffdc5b0b9c0, derivs1=derivs1@entry=0x4181d0 <dorbdt(double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, int, int, int, int)>, KTa=KTa@entry=0, KTb=KTb@entry=2.9179459219507452e-10, Ma=Ma@entry=1.4399999999999999, Mb=Mb@entry=24.12289019752216, dMa=dMa@entry=nan(0x8000000000000), dMb=dMb@entry=0.55262531449484709, Ia=Ia@entry=-nan(0x8000000000000), Ib=Ib@entry=4.6753715902533024, Ra=Ra@entry=1.60374190786905, Rb=Rb@entry=1.6037419078694282, Rca=Rca@entry=inf, Rcb=Rcb@entry=0, wcrit_a=wcrit_a@entry=0, wcrit_b=wcrit_b@entry=0, La=La@entry=651959.17475758004, Lb=Lb@entry=651959.17475832114, Ka=Ka@entry=-978270896, Kb=Kb@entry=7, magb_a=magb_a@entry=0, magb_b=magb_b@entry=0) at binary.cpp:8365 #4 0x000000000042f0ff in odeint1 (ystart=ystart@entry=0x1a4f130, nvar=nvar@entry=4, x1=x1@entry=3.4806341581987525, x2=x2@entry=3.4806531067030479, eps=eps@entry=0.001, h1=0.15274083617124923, hmin=hmin@entry=0, nok=nok@entry=0x7ffdc5b0bc50, nbad=nbad@entry=0x7ffdc5b0bc60, derivs1=derivs1@entry=0x4181d0 <dorbdt(double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, int, int, int, int)>, rkqs1=rkqs1@entry=0x433760 <rkqs1(double, double, int, double, double, double, double, double, double, void ()(double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, int, int, int, int), double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, int, int, int, int)>, KTa=0, KTb=2.9179459219507452e-10, Ma=Ma@entry=1.4399999999999999, Mb=Mb@entry=24.12289019752216, dMa=dMa@entry=nan(0x8000000000000), dMb=dMb@entry=0.55262531449484709, Ia=Ia@entry=-nan(0x8000000000000), Ib=Ib@entry=4.6753715902533024, Ra=Ra@entry=1.60374190786905, Rb=Rb@entry=1.6037419078694282, Rca=Rca@entry=inf, Rcb=Rcb@entry=0, wcrit_a=wcrit_a@entry=0, wcrit_b=wcrit_b@entry=0, La=La@entry=651959.17475758004, Lb=Lb@entry=651959.17475832114, Ka=Ka@entry=-978270896, Kb=Kb@entry=7, magb_a=magb_a@entry=0, magb_b=magb_b@entry=0) at binary.cpp:8326 #5 0x0000000000430c93 in orb_change (t1=t1@entry=3.4806341581987525, t2=t2@entry=3.4806531067030479, a=a@entry=0x7ffdc5b0c400, e=e@entry=0x7ffdc5b0c410, wa=wa@entry=0x7ffdc5b0c420, wb=wb@entry=0x7ffdc5b0c430, tvira=0, tvirb=3.7897020774656023e-05, Ma=1.4399999999999999, Mb=24.12289019752216, M0a=1.4399999999999999, M0b=24.12289019752216, Mzamsa=147.78874082664947, Mzamsb=125.59129163845198, dMwinda=dMwinda@entry=nan(0x8000000000000), dMwindb=dMwindb@entry=0.55262531449484709, Mca=0, Mcb=0, Ra=1.60374190786905, Rb=1.6037419078694282, Raold=Raold@entry=nan(0x8000000000000), Rbold=Rbold@entry=1.6037347409964342, La=651959.17475758004, Lb=651959.17475832114, Ka=-978270896, Kb=7, Kaold=Kaold@entry=1, Kbold=Kbold@entry=7, mt=mt@entry=0, ce=ce@entry=0, mttype=0, Iaold=Iaold@entry=0x7ffdc5b0c440, Ibold=Ibold@entry=0x7ffdc5b0c450, KTa=KTa@entry=0x7ffdc5b0c590, KTb=KTb@entry=0x7ffdc5b0c598, dMmta=0, dMmtb=0, Mdisa=0, Mdisb=0, darwin=darwin@entry=0x7ffdc5b0c2e4) at binary.cpp:7750 #6 0x000000000040f58c in main (argc=<optimized out>, argv=<optimized out>) at binary.cpp:1899 Those NAN are quite high in backtrace, but i don't know whether they should be there or not.