PROC PHREG with plot-Running forever and NOT showing any graphs

[sasworker16]

Hello,

I am running SAS 9.4 SAS/STAT 15.1 environment. 

I am trying to get similar results as

https://support.sas.com/resources/papers/proceedings17/SAS0462-2017.pdf 

in my dataset (~250,000 patient data, ~160 MB, about 250,000 rows and 40 columns) for 

1) ROC plot for selected time points

2) time-depednent integrated AUC plot with 95% confidence limits

with the following syntax

/*NOTE: a~kk are explanatory variables (n=37) for the binary outcome (0=no event, 1=event)*/

ods graphics on;

/*(1)*/
proc phreg data=a.data(overlay=individual)=roc rocoptions(at=1 2 3);
model time*outcome(0)=a b c d e f g h i j k l n m o p q r s t u v w x y z
aa bb cc dd ee ff gg hh ii jj kk;
run;

/*(2)*/
proc phreg data=a.data plots=auc rocoptions(method=ipcw(cl seed=1234) iauc);
model time*outcome(0)=a b c d e f g h i j k l n m o p q r s t u v w x y z
aa bb cc dd ee ff gg hh ii jj kk;
run;

I also increased the MEMSIZE in the config file to 12G. 

However, it is running forever and not showing any graphs and only the following message shows up in the Log Window. 

NOTE: Convergence criterion (GCONV=1E-8) satisfied.

How do I fix this problem and get the graphs I need? It works with fewer variables in the model (e.g only with the four variables: a, b, c, d)

Do I have too many variables (e.g 37 variables) in the model?

Any help or suggestions would be appreciated.

Thank you. 

[PaigeMiller]

How long is "forever"??

It may be possible that plotting with this many variables and this many observations and asking for many different plots overloads the capabilities of your computer.

[Reeza · Accepted solution]

What happens if you run it with all variables, but a smaller sample, say 50,000 rows? And or, keep adding variables and find out which breaks it. I'm assuming some of those are dummy variables since I see no CLASS statement?