Question:What does this mean? "maple: fatal error, lost connection to kernel"

Question:What does this mean? "maple: fatal error, lost connection to kernel"

Maple

Hi all,

I've launched a maple program (.mpl) :

nohup maple -F 5_grobner.mpl > 5grobner.out 2>&1 &

on a server to whom I've access through a ssh tunnel.

my code are here :

==========================BEGIN===========================

restart;

with(LinearAlgebra);

F0:=(w*f00+v*f01)/(v+w);

F1:=(u*f10+w*f11)/(w+u);

F2:=(v*f20+u*f21)/(u+v);

T:=(u)^(3)*p0+(v)^(3)*p1+(w)^(3)*p2 + 3*u*v*(u+v)*(u*e01+v*e10) + 3*v*w*(v+w)*(v*e11+w*e20) + 3*w*u*(w+u)*(w*e21+u*e00) + 12*u*v*w*(u*F0+v*F1+w*F2);

coefList:=[p0,p1,p2,e00,e01,e10,e11,e20,e21,f00,f01,f10,f11,f20,f21];

nops(coefList);

for i from 1 to nops(coefList) do

ind:=coefList[i];

BF||ind:=subs(w=1-u-v, factor(coeff(T,coefList[i],1)));

end do;

for i from 1 to nops(coefList) do

ind:=coefList[i];

DDBF||ind:=factor(diff(BF||ind,u,v));

end do;

QR:=x-> t1*subs(u=u1,v=v1,x) + t2*subs(u=u2,v=v2,x) + t3*subs(u=u3,v=v3,x) + (t4)*subs(u=u4,v=v4,x)+t5*subs(u=u5,v=v5,x);

for i from 1 to nops(coefList) do

ind:=coefList[i];

eq[i]:=numer(simplify(int(DDBF||ind, u=0..1-v, v=0..1) - QR(DDBF||ind)));

end do;

sys := [seq(eq[i],i=1..nops(coefList))];

with(Groebner);

res:=Basis(sys,plex(u1,v1,t1,u2,v2,t2,u3,v3,t3,t4,t5,u5,v5));

==========================END===========================

After the program ended, the output file ends with:

......Some outputs of the program....

memory used=1047901.6MB, alloc=32244.7MB, time=147379.36

memory used=1049539.5MB, alloc=32276.7MB, time=147732.14

memory used=1051177.5MB, alloc=32308.7MB, time=148081.18

memory used=1052815.4MB, alloc=32340.7MB, time=148473.81

maple: fatal error, lost connection to kernel

===============================================

I guess the reason of my program is " Maple was consuming too much of the RAM or CPU during a calculation;"

But I'm not sure.

Or "Maple sensed that some loop will not terminate,"

So it means there's no solution for my program?

Does someone know what this error means?

Or how can I know the right reason that I got this message?

Thanks!

jun

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