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Task #2850

assess Raptor Talos for testing

Added by Szilárd Páll 9 months ago. Updated 8 months ago.

Status:
In Progress
Priority:
Normal
Assignee:
Szilárd Páll
Category:
testing
Target version:
-
Difficulty:
simple
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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).

make-check-gcc6.log (183 KB) make-check-gcc6.log Szilárd Páll, 01/31/2019 12:26 AM
make-check-gcc7.log (185 KB) make-check-gcc7.log Szilárd Páll, 01/31/2019 12:26 AM
make-check-gcc8.log (185 KB) make-check-gcc8.log Szilárd Páll, 01/31/2019 12:26 AM

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History

#1 Updated by Szilárd Páll 9 months ago

  • Description updated (diff)

#2 Updated by Szilárd Páll 9 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 9 months ago

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 8 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.

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