mehdibgh

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These are questions asked by mehdibgh

During running my ws I faced with memory error as below, where as my system have enough memory (120GB)

Warning, Run: unable to set assignto result due to error:  Maple was unable to allocate enough memory to complete this computation.  Please see ?alloc

Maple's help suggests :Software limits are imposed by the -T command-line argument, the datalimit argument to kernelopts and system imposed user limits (for example shell limits).
  But I could not understand how to increase software limit.

 

how to fix that?

I unprotect the GAMMA, but still receives error:

Error, attempting to assign to `GAMMA` which is protected.  Try declaring `local GAMMA`; see ?protect for details.


 

NULL

restart

II := 2

2

(1)

JJ := 2

2

(2)

N := 2:

unprotect(GAMMA):

q := max(II+1, JJ+1):

M := 5:

seq(seq(seq(assign(GAMMA[i, j, r], a*`#mover(mi("Γ",fontstyle = "normal"),mo("&uminus0;"))`[i, j, r]), i = 0 .. q), j = 0 .. q), r = 1 .. N):

a := .2:

RrProc := proc (i, m) local K, j, Q; if i <= m then 0 else K := 1; Q := Matrix(i, 1); for j by 2 to i do Q(j) := 2*i-K; K := 4+K end do; Q := FlipDimension(Q, 1); Q(m+1) end if end proc:
``

`#mover(mi("&Gamma;",fontstyle = "normal"),mo("&uminus0;"))` := Array(0 .. II, 0 .. JJ, 1 .. 6, 1 .. M):

f1 := RandomArray(II+1, JJ+1):

for m to M do `&Gamma;m`[1, m] := f1; `&Gamma;m`[2, m] := f2; `&Gamma;m`[3, m] := f3; `&Gamma;m`[4, m] := f4; `&Gamma;m`[5, m] := f5; `&Gamma;m`[6, m] := f6 end do:

unprotect(`#mover(mi("&Gamma;",fontstyle = "normal"),mo("&uminus0;"))`):

for m to M do `#mover(mi("&Gamma;",fontstyle = "normal"),mo("&uminus0;"))`[0 .. II, 0 .. JJ, 1, m] := ArrayTools:-Alias(`&Gamma;m`[1, m], [0 .. II, 0 .. JJ]); `#mover(mi("&Gamma;",fontstyle = "normal"),mo("&uminus0;"))`[0 .. II, 0 .. JJ, 2, m] := ArrayTools:-Alias(`&Gamma;m`[2, m], [0 .. II, 0 .. JJ]); `#mover(mi("&Gamma;",fontstyle = "normal"),mo("&uminus0;"))`[0 .. II, 0 .. JJ, 3, m] := ArrayTools:-Alias(`&Gamma;m`[3, m], [0 .. II, 0 .. JJ]); `#mover(mi("&Gamma;",fontstyle = "normal"),mo("&uminus0;"))`[0 .. II, 0 .. JJ, 4, m] := ArrayTools:-Alias(`&Gamma;m`[4, m], [0 .. II, 0 .. JJ]); `#mover(mi("&Gamma;",fontstyle = "normal"),mo("&uminus0;"))`[0 .. II, 0 .. JJ, 5, m] := ArrayTools:-Alias(`&Gamma;m`[5, m], [0 .. II, 0 .. JJ]); `#mover(mi("&Gamma;",fontstyle = "normal"),mo("&uminus0;"))`[0 .. II, 0 .. JJ, 6, m] := ArrayTools:-Alias(`&Gamma;m`[6, m], [0 .. II, 0 .. JJ]) end do:

UP := proc (s, GAMMA, N, M, a, b, II, JJ) local k; i, j, r, p, m, q, n, l; if s = 1 then add(add(add(add(add(add((2/3)*Rr[i, m]*Rr[k, m]*b*add(GAMMA[i, j, q, p]*GAMMA[k, j, q, r]*tau[p](t)*tau[r](t), q = 1 .. N)/((2*m+1)*(2*j+1)*a), i = 0 .. II), k = 0 .. II), m = 0 .. II), j = 0 .. JJ), p = 1 .. M), r = 1 .. M) elif s = 2 then add(add(add(add(add(add((1/2)*Rr[i, m]*Rr[k, m]*b*add(GAMMA[i, j, q, p]*GAMMA[k, j, q, r]*tau[p](t)*tau[r](t), q = 1 .. N)/((2*m+1)*(2*j+1)*a), i = 0 .. II), k = 0 .. II), m = 0 .. II), j = 0 .. JJ), p = 1 .. M), r = 1 .. M) end if end proc:

Grid:-Seq(UP(s, GAMMA, N, M, a, b, II, JJ), s = 1 .. 2)

Error, attempting to assign to `GAMMA` which is protected.  Try declaring `local GAMMA`; see ?protect for details.

 

Error, attempting to assign to `GAMMA` which is protected.  Try declaring `local GAMMA`; see ?protect for details.

 

Error, attempting to assign to `GAMMA` which is protected.  Try declaring `local GAMMA`; see ?protect for details.

 

Error, attempting to assign to `GAMMA` which is protected.  Try declaring `local GAMMA`; see ?protect for details.

 

UP(1, GAMMA, N, M, a, b, II, JJ), UP(2, GAMMA, N, M, a, b, II, JJ)

(3)

NULL


 

Download soal.mw

 

What is the problem?

 

MY worksheet have more than 100 parameters, now I want to use all of the parameters within a procedure, is there any easy way to introduce all these paramaters to proc without mentioning them in parentheses one by one proc(x,y,z,...)?

What command in Maple runs specific worksheets within other worksheet?

Actually I want to know how is it possible to comminucate and control multiple worksheets within one specific worksheet?

 

I have a system with the following config:

But when I run my worksheet, only 10% of CPU and 8% of the RAM are working, and it takes one hour my wrksheet to be computed, I am wondering why Maple do not use enough CPU and RAM to do the computation fast.

What is the justification behind this? Is there a way to coerce the Maple to use more capacities of the CPU and RAM to speed up the computations?

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