Date:         Tue, 3 Dec 2002 10:19:42 -0500
Reply-To:     Bill Dvorak <bdvorak@YAHOO.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Bill Dvorak <bdvorak@YAHOO.COM>
Subject:      Re: Are array's 10 times slower?

This may be a problem with 8.2.  I had experienced a significant slowdown
in programs that had a lot of array usage when going from SAS 6.12 to SAS
8.2 on Windows.  Our tech people researched the problem and did the
following fix:

The option NOCODEGEN is being changed to CODEGEN.

The NOCODEGEN system option was set nearly a year ago to correct a
potential problem with numeric precision which could occur in certain
circumstances. However, the options has been shown to drastically degrade
the performance of some SAS programs. As a result, the option is being
changed back to CODEGEN.

By changing the option back to CODEGEN, Version 8 of SAS will have the
same precision problem that was always present with Version 6. Therefore,
this change is not expected to cause any problems to occur. According to
SAS, the risk of causing bad performance is greater than the risk of
experiencing the specific precision problem that was addressed by this
option.


After changing this system option, speed increased dramatically.

Bill