On Wed, Sep 22, 2021 at 10:12 PM Fernando Gouvea <fqgou...@colby.edu> wrote:
> Update: the problem is machine-dependent. On one Dell laptop, plot works > with no problem. On a different one, big crash. > We see this with other operating systems, too. Hopefully fixed in 9.4, see https://trac.sagemath.org/ticket/31565 > Fernando > On 9/22/2021 3:49 PM, William Stein wrote: > > ---------- Forwarded message --------- > From: Fernando Q. Gouvea <fqgou...@colby.edu> <fqgou...@colby.edu> > Date: Wed, Sep 22, 2021 at 12:26 PM > Subject: Re: [sage-support] Sage 9.3 for Windows crashing > To: William Stein <wst...@gmail.com> <wst...@gmail.com> > > > At this point, only plotting has caused the problem. For example: > > sage: K=Qp(7) > sage: K > 7-adic Field with capped relative precision 20 > sage: a=K(8) > sage: a > 1 + 7 + O(7^20) > sage: sqrt(a) > 1 + 4*7 + 2*7^2 + 7^3 + 3*7^4 + 2*7^5 + 4*7^6 + 2*7^7 + 5*7^8 + 7^11 + > 4*7^12 + 4*7^13 + 6*7^14 + 2*7^15 + 4*7^16 + 4*7^17 + 5*7^18 + O(7^20) > sage: log(a) > 7 + 3*7^2 + 7^3 + 6*7^4 + 5*7^5 + 2*7^6 + 7^7 + 5*7^8 + 4*7^9 + 4*7^10 + > 2*7^11 + 5*7^12 + 7^13 + 5*7^14 + 6*7^15 + 2*7^16 + 2*7^17 + 2*7^18 + > 7^19 + O(7^20) > > That all works fine. > > Fernando > > On 9/22/2021 2:46 PM, William Stein wrote: > > On Wed, Sep 22, 2021 at 11:36 AM Fernando Q. Gouvea <fqgou...@colby.edu> > <fqgou...@colby.edu> wrote: > > I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, I get the > same problem. The offending command is pretty innocuous: > > sage: plot(ln(1+x),(-1,5)) > > The Sage window then crashes. In the notebook I get a message that the kernel > just died. Running it in the Sage Terminal, sage crashes and leaves this > message behind: > > ------------------------------------------------------------------------ > Unhandled SIGSEGV: A segmentation fault occurred. > This probably occurred because a *compiled* module has a bug > in it and is not properly wrapped with sig_on(), sig_off(). > Python will now terminate. > ------------------------------------------------------------------------ > /opt/sagemath-9.3/src/bin/sage-python: line 2: 1535 Segmentation fault > (core dumped) sage -python "$@" > > Any ideas as to what is going on? > > Do lots of things you try cause problems like this or is it just plotting? > > E.g., what if you do some basic arithmetic with p-adic numbers, e.g., > some examples from here: > https://doc.sagemath.org/html/en/reference/padics/sage/rings/padics/tutorial.html > > (Sorry, I can't help asking that given that I learned all about > p-adics from your book decades ago...) > > > Fernando > > > -- > ================================================================== > Fernando Q. Gouvea > Carter Professor of Mathematics > Colby College > Mayflower Hill 5836 > Waterville, ME 04901fqgou...@colby.edu http://www.colby.edu/~fqgouvea > > Humility engenders learning because it beats back the arrogance > that puts blinders on. It leaves you open for truths to reveal > themselves. You don't stand in your own way. > -- Wynton Marsalis > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/e587c471-9ffa-4364-5fa2-fbf40d63e7d6%40colby.edu. > > -- > ================================================================== > Fernando Q. Gouvea > Carter Professor of Mathematics > Colby College > Mayflower Hill 5836 > Waterville, ME 04901fqgou...@colby.edu http://www.colby.edu/~fqgouvea > > What garlic is to food, insanity is to art. > > > > > -- > ============================================================= > Fernando Q. Gouvea http://www.colby.edu/~fqgouvea > Carter Professor of Mathematics > Dept. of Mathematics and Statistics > Colby College > 5836 Mayflower Hill > Waterville, ME 04901 > > We receive the deepest truths only when we're patient enough > -- and stable enough and docile enough -- to allow ourselves > to be taught them. > -- R. R. Reno, in "Piety's Rightful Claim" > > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/0df8d5b6-4528-48c4-19df-acab2df1371c%40colby.edu > <https://groups.google.com/d/msgid/sage-support/0df8d5b6-4528-48c4-19df-acab2df1371c%40colby.edu?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/CAAWYfq3f1B%3DDBQxx1Xz89s9HUAri9QFvv2vm%3Dty0L9YKAEyQVA%40mail.gmail.com.
