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One failure in the tests for the generalized non-symmetric eigenvalue problem ZGGEV #744
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Hi! Do you still have this problem? |
I have just cloned the current master and compiled, and yes; this one error is consistent. I've just compiled using I will say, this does not impact my current work. I had only noticed the error and thought I should raise a concern/warning. Can you not see this or replicate when you build the library and the tester runs? |
Thanks! I couldn't reproduce the problem using GCC 11.1.0 in my Ubuntu 20.04. I am installing version 10.2.0 to test. Is there any specific compilations flags? |
I am using Makefile. The following will reproduce the issue for me. Once finished building and testing the same single error for ZGV pops up. Maybe it is hardware specific? |
So ... maybe I shouldn't have done this, but it all seems eigenvalue related. I decided to follow the commands provided above on my personal Mac instead of the main machine I use. I do not get the
I don't know if this is worth mentioning. Maybe what I do is not correct. |
I believe this is essentially the same as in #732 (and issues referenced therein) - though one would need to look at the detailed report in testing_results.txt to see if these are indeed "minor" failures as described in the FAQ. With increasingly aggressive code optimization by compilers, and small differences in hardware implementations, register counts etc. the testsuite appears to have become increasingly fragile. |
I couldn't reproduce it in my machine (Ubuntu 20.04) with GCC 10.3 or 11.1. I tried:
I have the same feeling as @martin-frbg. @dbielich, you tested on Mac. Which version? What was the OS in the first machine you used? |
Output of failure within zgd.out:
I am using gcc/10.2.0 and built the library with the example make.inc: make.inc.gfortran within the INSTALL directory.
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