g77 optimization fails with current versions

From: Erik Olofsen Date: December 12, 2003 technical Source: cognigencorp.com
From: "Olofsen, E. (ANST)" E.Olofsen@lumc.nl Subject: [NMusers] g77 optimization fails with current versions Date: 12/12/2003 8:14 AM Dear NONMEM users, Yesterday I reported about the g77 optimization bug. I've now recompiled version 3.2.3 and compiled the latest version, 3.3.2, and did some more runs with ADVAN3 and two different data sets. With 3.2.3 and -O3, it is possible to get a variety of error messages, or possibly no error message at all, so I don't think the results with -O3 (and possibly -O2) can be trusted. I've tested this under two different Linux distributions and kernels. With 3.2.3 and -O3 -fno-gcse, runs may or may not be different from runs without optimization, but this may just be because with optimized code rounding errors accumulate differently. Runs with the latest version, 3.3.2, were consistent, so it appears the bug has been removed. Interestingly, runs were also more consistent than those of using version 2.95.3 with the model/data combination with low stability. Erik Olofsen Leiden University Medical Center

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Dec 11, 2003 Erik Olofsen g77 optimization fails with current versions
Dec 12, 2003 William Bachman reporting "errors" or "bugs" to nmusers
Dec 12, 2003 Erik Olofsen g77 optimization fails with current versions
Dec 12, 2003 Erik Olofsen RE: reporting "errors" or "bugs" to nmusers
Dec 15, 2003 Erik Olofsen RE: reporting "errors" or "bugs" to nmusers -> -O3 optimization r esults corroborated
Dec 16, 2003 William Bachman RE: reporting "errors" or "bugs" to nmusers -> -O3 optimization r esults corroborated
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