Task #2850
assess Raptor Talos for testing
Description
We have a Raptor Systems Talos II that we plan to use primarily for correctness testing and CI. As a first step we will check builds of 2019 using the relevant compilers (latest and default GNU on IBM Power9 platforms, i.e. gcc 6 and 8).
Secondly, we will assess how well does the performance of this CPU/system represent that of an IBM Power9 before doing further performance testing / compiler flag checks (lower prio).
Checklist
- foo
History
#1 Updated by Szilárd Páll 3 months ago
- Description updated (diff)
#2 Updated by Szilárd Páll 3 months ago
gcc 6, 7, and 8 builds work fine and pass the in-tree regressiontesting (3 runs each), will check different run configs for regressiontest runs too to see if #2747 can be reproduced.
#3 Updated by Szilárd Páll 3 months ago
- File make-check-gcc6.log make-check-gcc6.log added
- File make-check-gcc7.log make-check-gcc7.log added
- File make-check-gcc8.log make-check-gcc8.log added
Some funny compiler warnings aside -- which I'm not sure are worth working around unless we encounter them in our CI -- compilation and unit/regression tests are all fine with the default Power9 flags.
Attached are the build output logs.
However, looking at the differences between the Power8 and Power9 support to track down #2747 I noticed that on Power8 we use -mpower8-fusion, but on Power9 this flag was dropped. Adding it back seems to allow reproducing possibly both #2746 and #2747.
#4 Updated by Szilárd Páll 2 months ago
Update: from the pov of general development things look good and is helped tracking down other issues. Performance testing will have to wait to compare against IBM Power9.