Hi R users
I am trying to run a non linear parameter optimization using the
function optim() and I have problems regarding memory allocation.
My data are in a dataframe with 9 columns. There are 656100 rows.
>head(org_results)
comb.id p H1 H2 Range Rep no.steps dist aver.hab.amount
1 1 0.1 0 0 1 100 0
0.2528321 0.1393901
2 1 0.1 0 0 1 100 0
0.4605934 0.1011841
3 1 0.1 0 0 1 100 4
3.4273670 0.1052789
4 1 0.1 0 0 1 100 4
2.8766364 0.1022138
5 1 0.1 0 0 1 100 0
0.3496872 0.1041056
6 1 0.1 0 0 1 100 0
0.1050840 0.3572036
>
>est_coeff <- optim(coeff,SS, steps=org_results$no.steps,
Range=org_results$Range, H1=org_results$H1, H2=org_results$H2,
p=org_results$p)
Error: cannot allocate vector of size 5.0 Mb
In addition: Warning messages:
1: In optim(coeff, SS, steps = org_results$no.steps, Range =
org_results$Range, : Reached total allocation of 10000Mb: see
help(memory.size)
2: In optim(coeff, SS, steps = org_results$no.steps, Range =
org_results$Range, : Reached total allocation of 10000Mb: see
help(memory.size)
3: In optim(coeff, SS, steps = org_results$no.steps, Range =
org_results$Range, : Reached total allocation of 10000Mb: see
help(memory.size)
4: In optim(coeff, SS, steps = org_results$no.steps, Range =
org_results$Range, : Reached total allocation of 10000Mb: see
help(memory.size)
>
> memory.size()
[1] 9978.19
> memory.limit()
[1] 10000
>
I know that I am not sending reproducible codes but I was hoping that
you could help me understand what is going on. I set a maximum limit of
10000 mega byte (by writing this string --max-mem-size=10000M after the
target path, right click on R icon, shortcut tab). And R is telling me
that it cannot allocate a vector of size 5 Mb???
Thank you for your help
Lorenzo
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