Hello Waldek, Le mar. 27 déc. 2022 à 02:43, Waldek Hebisch <de...@fricas.math.uni.wroc.pl> a écrit : > > On Wed, Dec 21, 2022 at 12:38:15PM +0100, Grégory Vanuxem wrote: > > Hello Waldek, hello all, [SNIPPET]
>> The base is done for me, but... The Julia library requires an >> initialisation and I can't figure out how to initialize its environment at >> startup, I always encounter a fatal error: ReadOnlyMemoryError > I have never seen such a message. Me too, and, difficult to debug in fact. > > > > See : > > ============================================================ > > └─$ fricas -nosman -rl > > Checking for foreign routines > > FRICAS="/usr/local/lib/fricas/target/x86_64-linux-gnu" > > spad-lib="/usr/local/lib/fricas/target/x86_64-linux-gnu/lib/libspad.so" > > gmp-lib="/usr/local/lib/fricas/target/x86_64-linux-gnu/lib/gmp_wrap.so" > > julia-lib="/usr/local/lib/fricas/target/x86_64-linux-gnu/lib/julia_wrap.so" > > foreign routines found > > openServer result -2 > > FriCAS Computer Algebra System > > Version: FriCAS 2022-07-16 > > Timestamp: mer. 21 déc. 2022 10:35:13 CET > > > > (1) -> )lisp (init-julia-env) > > Big question is what 'init-julia-env' is doing. It's a call to the julia 'jl_init' routine in libjulia.so. Julia has its own interpreter, stack, GC etc. so its environment needs to be initialized. In fact I wonder if SBCL and Julia are compatible and how to circumvent this. I'll see. See: https://docs.julialang.org/en/v1/manual/embedding/ (defun init-julia-env() (if (not *julia-initialized*) (progn (sb-alien:alien-funcall (sb-alien:extern-alien "jl_init" (sb-alien:function sb-alien:void))) (setf *julia-initialized* t)))) > > Value = T > > (1) -> )lisp (jl-dbl-function "exp" 1.0) > > > > Value = 2.718281828459045 > > (1) -> exp(1.0) > > fatal: error thrown and no exception handler available. > > ReadOnlyMemoryError() > > unknown function (ip: 0x52f7062f) > <snip> > > This is because above I begin by initializing Julia's env. So I can't even > > build FriCAS if I automatize at startup the Julia's env. > > > > But, apparently, and I don't even know if I am in the right thinking > > direction, if I "play" with different FriCAS's domains this does not > > happen. Sometimes in fact. > > If you think that problem is related. would suggest trying: > > )set messages autoload on Good idea, I didn't think about that. I'll give it a try. This is for sure related but not only I think. That's relatively difficult because of possible memory corruption behind the scene. For now to test my spad code FriCAS is initialized via .fricasrc with: )set mess type off sqrt 2;sqrt 2.0;x^3=7;x^3+7; )set mess type on --)lisp (init-julia-env) But for example it's totally impossible to compile a .spad file if Julia is initialized so I have to work around that to compile my spad code i.e. use FriCAS with uninitialized Julia. __ Greg > > -- > Waldek Hebisch > > -- > You received this message because you are subscribed to the Google Groups > "FriCAS - computer algebra system" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to fricas-devel+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/fricas-devel/20221227022657.ypgx275453f43ai5%40fricas.math.uni.wroc.pl. -- You received this message because you are subscribed to the Google Groups "FriCAS - computer algebra system" group. To unsubscribe from this group and stop receiving emails from it, send an email to fricas-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/fricas-devel/CAHnU2dY98tXyA%3DNCHWQjz0Ye4SCbrzr3N9c%3DVJvG98Bx5uiVYA%40mail.gmail.com.
