The ROBUSTREG Procedure
| PERFORMANCE Statement |
The PERFORMANCE statement is used to change default options that affect the performance of PROC ROBUSTREG and to request tables that show the performance options in effect and timing details. See Chen (2002) for some empirical results.
- PERFORMANCE <options> ;
The following options are available:
- CPUCOUNT=n | ACTUAL
specifies the number of processors to use for forming crossproduct matrices. You can specify any integer in the range 1-1024 for n. CPUCOUNT=ACTUAL sets CPUCOUNT to be the number of physical processors available. Note that this can be less than the physical number of CPUs if the SAS process has been restricted by system administration tools. Setting CPUCOUNT= to a number greater than the actual number of available CPUs might result in reduced performance. This option overrides the SAS system option CPUCOUNT=. If CPUCOUNT=1, then NOTHREADS is in effect, and PROC ROBUSTREG uses singly threaded code.
- DETAILS
requests the "PerfSettings" table that shows the performance settings in effect and the "Timing" table that provides a broad timing breakdown of the PROC ROBUSTREG step.
- THREADS
enables multithreaded computation. This option overrides the SAS system option THREADS | NOTHREADS.
- NOTHREADS
disables multithreaded computation. This option overrides the SAS system option THREADS | NOTHREADS.