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* [Bug target/112916] New: [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 @ 2023-12-08 7:47 fkastl at suse dot cz 2023-12-08 8:24 ` [Bug target/112916] " rguenth at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: fkastl at suse dot cz @ 2023-12-08 7:47 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112916 Bug ID: 112916 Summary: [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 Product: gcc Version: 14.0 Status: UNCONFIRMED Keywords: needs-bisection Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: fkastl at suse dot cz Target Milestone: --- Host: x86_64-linux Target: x86_64-linux Between commits g:7758cb4b53e8a336 and g:cff1fa6625d1273f there's a slowdown of 433.milc 2006 SPEC. 7% regression seen on the graph here (Zen2 machine): https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=288.70.0 The options are: -Ofast -march=native -mtune=native LTO and PGO I've also replicated this on another Zen2 machine and got 4% slowdown. I haven't seen this slowdown on other architectures. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/112916] [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 2023-12-08 7:47 [Bug target/112916] New: [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 fkastl at suse dot cz @ 2023-12-08 8:24 ` rguenth at gcc dot gnu.org 2023-12-13 9:17 ` fkastl at suse dot cz ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2023-12-08 8:24 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112916 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |14.0 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- The graph is very noisy though and there's some gaps without data? ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/112916] [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 2023-12-08 7:47 [Bug target/112916] New: [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 fkastl at suse dot cz 2023-12-08 8:24 ` [Bug target/112916] " rguenth at gcc dot gnu.org @ 2023-12-13 9:17 ` fkastl at suse dot cz 2024-03-07 20:59 ` law at gcc dot gnu.org 2024-05-07 7:43 ` [Bug target/112916] [14/15 " rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: fkastl at suse dot cz @ 2023-12-13 9:17 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112916 --- Comment #2 from Filip Kastl <fkastl at suse dot cz> --- Sometimes there are gaps in the data our team gathers, unfortunately. One cause can be that upstream GCC temporarily fails to build a benchmark. That shouldn't matter in this case I think. The last gap for this benchmark was in September. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/112916] [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 2023-12-08 7:47 [Bug target/112916] New: [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 fkastl at suse dot cz 2023-12-08 8:24 ` [Bug target/112916] " rguenth at gcc dot gnu.org 2023-12-13 9:17 ` fkastl at suse dot cz @ 2024-03-07 20:59 ` law at gcc dot gnu.org 2024-05-07 7:43 ` [Bug target/112916] [14/15 " rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: law at gcc dot gnu.org @ 2024-03-07 20:59 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112916 Jeffrey A. Law <law at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P2 CC| |law at gcc dot gnu.org ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/112916] [14/15 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 2023-12-08 7:47 [Bug target/112916] New: [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 fkastl at suse dot cz ` (2 preceding siblings ...) 2024-03-07 20:59 ` law at gcc dot gnu.org @ 2024-05-07 7:43 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2024-05-07 7:43 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112916 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|14.0 |14.2 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- GCC 14.1 is being released, retargeting bugs to GCC 14.2. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2024-05-07 7:43 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-12-08 7:47 [Bug target/112916] New: [14 Regression] ~4-7% exec time regression of 433.milc on AMD Zen2 fkastl at suse dot cz 2023-12-08 8:24 ` [Bug target/112916] " rguenth at gcc dot gnu.org 2023-12-13 9:17 ` fkastl at suse dot cz 2024-03-07 20:59 ` law at gcc dot gnu.org 2024-05-07 7:43 ` [Bug target/112916] [14/15 " rguenth at gcc dot gnu.org
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