topic Multi-core/multi-threads processing. in SAS Data Science

Multi-core/multi-threads processing.

MelKunkel — Mon, 30 Jul 2012 17:04:12 GMT

I have SAS 9.2/Enterprise 4.3 running on a windows (7 x64) machine with eight cores (+ Tesla C2075 GPU) and cannot get my program to run on more than one core at a time. The code runs nicely and produces great results, but is very slow. The code is below; any thoughts on getting it to run on more than one core would be greatly appreciated.

Thanks,

Mel

proc surveyselect DATA=data

noprint

seed=1

out=boot1

method=srs

samprate=.45

rep=250000;

run;

Proc reg data=boot1 outest=est1(drop=_:)noprint;

MODEL Total = x1 x2 …… xn

/ SELECTION= adjrsq cp start=7 stop=7 best=1;

by replicate;

run;

Proc means data=est1

VAR x1 x2 …… xn;

output out=test1

N= ;

run;

quit;

Re: Multi-core/multi-threads processing.

robby_beum — Mon, 30 Jul 2012 17:19:05 GMT

What happens if you define:

OPTIONS THREADS;

Re: Multi-core/multi-threads processing.

MelKunkel — Mon, 30 Jul 2012 17:20:31 GMT

Log shows multiple threads available, but no additional cores are used.

Re: Multi-core/multi-threads processing.

robby_beum — Mon, 30 Jul 2012 17:24:52 GMT

What about defining the CPUCOUNT?:

OPTIONS THREADS=YES CPUCOUNT=8;

Re: Multi-core/multi-threads processing.

MelKunkel — Mon, 30 Jul 2012 17:35:06 GMT

Same results; shows the cores, but does not use them.

Re: Multi-core/multi-threads processing.

Damien_Mather — Tue, 14 Aug 2012 11:53:13 GMT

How slow is very slow?

You'll get that if you're running a SAS desktop license.

Do you have access to a SAS server license? Silly question I know as it is much more expensive.

With 8 cores and a desktop licence you could still run one surveyselect, but then split the resulting reps plus inference into 8 roughly equal parts and run all in paralell in batch, then append all tables after all batch SAS jobs have completed and analyse the boot stats in a 9th interactive session. What happens if you use another constant seed other than 1? (I always use my birthday in 8 digits, cos I think it's a lucky number. Hilarious ay?)