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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


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