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* [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured
@ 2020-05-25 15:56 doko at debian dot org
2020-05-26 7:17 ` [Bug other/95316] " rguenth at gcc dot gnu.org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: doko at debian dot org @ 2020-05-25 15:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
Bug ID: 95316
Summary: [10 Regression] binary built with -fopenacc fails to
run when not all offload compilers are installed that
were configured
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at debian dot org
Target Milestone: ---
This is usage regression; in gcc-9 building with
gcc-9 -o mandel-accel mandel.c -Wall -O2 -fopenacc
and running the mandel-accel binary works, if the nvptx offload compiler is
installed.
Building that with gcc-10 leads to:
$ gcc-10 -o mandel-accel mandel.c -Wall -O3 -fopenacc
lto-wrapper: fatal error: could not find accel/amdgcn-amdhsa/mkoffload in
/usr/lib/gcc/x86_64-linux-gnu/10/:/usr/lib/gcc/x86_64-linux-gnu/10/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/10/:/usr/lib/gcc/x86_64-linux-gnu/
(consider using ‘-B’)
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
because gcc-10 was configured with more than one offload target. Installing
all configured offload compilers works around it, or building for the offload
targets explicitly (-foffload=nvptx-none).
Expected behavior: Just print a warning when an offload compiler for a target
cannot be found.
Note: the packaged compilers for Debian/Ubuntu are gcc-10, gcc-10-offload-nvptx
and gcc-10-offload-amdgcn.
See https://launchpad.net/bugs/1878760
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug other/95316] [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured
2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
@ 2020-05-26 7:17 ` rguenth at gcc dot gnu.org
2020-05-26 8:28 ` [Bug other/95316] Offload compilation fails " tschwinge at gcc dot gnu.org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-05-26 7:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
Target Milestone|--- |10.2
Keywords| |openacc, openmp
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug other/95316] Offload compilation fails when not all offload compilers are installed that were configured
2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
2020-05-26 7:17 ` [Bug other/95316] " rguenth at gcc dot gnu.org
@ 2020-05-26 8:28 ` tschwinge at gcc dot gnu.org
2020-05-26 12:42 ` doko at debian dot org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: tschwinge at gcc dot gnu.org @ 2020-05-26 8:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
CC| |jakub at gcc dot gnu.org,
| |tschwinge at gcc dot gnu.org
Last reconfirmed| |2020-05-26
Summary|[10 Regression] binary |Offload compilation fails
|built with -fopenacc fails |when not all offload
|to run when not all offload |compilers are installed
|compilers are installed |that were configured
|that were configured |
--- Comment #1 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
So the report is not "binary built with -fopenacc fails to run when [...]" but
rather "compilation with -fopenacc fails when [...]"? And, same for '-fopenmp'
for OpenMP 'target' offloading? So I'm changing the Summary to: "Offload
compilation fails when [...]". (Please adjust if I've misunderstood.)
I don't think this is a regression: wouldn't you've gotten the same behavior
already before GCC 10 added GCN offloading, for example, when you had built GCC
with '--enable-offload-targets=nvptx-none' but then didn't have the nvptx
offloading compiler installed? I'm thus removing the "regression" tag.
(Please put it back if I've misunderstood.)
I agree that the current driver (?) behavior is not ideal. I suppose the
default offload targets configuration (unless overridden by '-foffload') should
be made so that if an offload compiler is not present, it is silently skipped.
That is, without printing a warning (as has been suggested), as that would
produce a lot of noise. If an offload target has been explicitly requested via
'-foffload=[target]', then that should result in a hard error, of course, if
the respective offload compiler is not available.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug other/95316] Offload compilation fails when not all offload compilers are installed that were configured
2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
2020-05-26 7:17 ` [Bug other/95316] " rguenth at gcc dot gnu.org
2020-05-26 8:28 ` [Bug other/95316] Offload compilation fails " tschwinge at gcc dot gnu.org
@ 2020-05-26 12:42 ` doko at debian dot org
2020-07-23 6:51 ` rguenth at gcc dot gnu.org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: doko at debian dot org @ 2020-05-26 12:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
--- Comment #2 from Matthias Klose <doko at debian dot org> ---
I see it as a usage regression, because suddenly a developer using the nxptx
offloading gets an error message about an unrelated offload compiler that
didn't exist before.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug other/95316] Offload compilation fails when not all offload compilers are installed that were configured
2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
` (2 preceding siblings ...)
2020-05-26 12:42 ` doko at debian dot org
@ 2020-07-23 6:51 ` rguenth at gcc dot gnu.org
2021-04-08 12:02 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-07-23 6:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.2 |10.3
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10.2 is released, adjusting target milestone.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug other/95316] Offload compilation fails when not all offload compilers are installed that were configured
2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
` (3 preceding siblings ...)
2020-07-23 6:51 ` rguenth at gcc dot gnu.org
@ 2021-04-08 12:02 ` rguenth at gcc dot gnu.org
2022-06-28 10:40 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-04-08 12:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.3 |10.4
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10.3 is being released, retargeting bugs to GCC 10.4.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug other/95316] Offload compilation fails when not all offload compilers are installed that were configured
2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
` (4 preceding siblings ...)
2021-04-08 12:02 ` rguenth at gcc dot gnu.org
@ 2022-06-28 10:40 ` jakub at gcc dot gnu.org
2023-07-07 8:53 ` rguenth at gcc dot gnu.org
2023-07-26 22:30 ` burnus@net-b.de
7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-06-28 10:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.4 |10.5
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug other/95316] Offload compilation fails when not all offload compilers are installed that were configured
2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
` (5 preceding siblings ...)
2022-06-28 10:40 ` jakub at gcc dot gnu.org
@ 2023-07-07 8:53 ` rguenth at gcc dot gnu.org
2023-07-26 22:30 ` burnus@net-b.de
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-07-07 8:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.5 |---
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug other/95316] Offload compilation fails when not all offload compilers are installed that were configured
2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
` (6 preceding siblings ...)
2023-07-07 8:53 ` rguenth at gcc dot gnu.org
@ 2023-07-26 22:30 ` burnus@net-b.de
7 siblings, 0 replies; 9+ messages in thread
From: burnus@net-b.de @ 2023-07-26 22:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95316
burnus@net-b.de <burnus@net-b.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |burnus@net-b.de
--- Comment #6 from burnus@net-b.de <burnus@net-b.de> ---
Matthias, isn't the issue just that for some reason the local patch, matching
what's nowadays --enable-offload-defaulted, wasn't working properly?
Cf. https://gcc.gnu.org/install/configure.html
and
https://inbox.sourceware.org/gcc-patches/251870a9-85e8-b69b-2f94-841f7548c3ba@ubuntu.com/t/
which also refers to lp #1878760
At least with --enable-offload-defaulted both at compile time and at libgomp
runtime, no error should be shown if not install.
Can this now be closed as fixed? (I think since GCC 12.)
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2023-07-26 22:30 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2020-05-25 15:56 [Bug other/95316] New: [10 Regression] binary built with -fopenacc fails to run when not all offload compilers are installed that were configured doko at debian dot org
2020-05-26 7:17 ` [Bug other/95316] " rguenth at gcc dot gnu.org
2020-05-26 8:28 ` [Bug other/95316] Offload compilation fails " tschwinge at gcc dot gnu.org
2020-05-26 12:42 ` doko at debian dot org
2020-07-23 6:51 ` rguenth at gcc dot gnu.org
2021-04-08 12:02 ` rguenth at gcc dot gnu.org
2022-06-28 10:40 ` jakub at gcc dot gnu.org
2023-07-07 8:53 ` rguenth at gcc dot gnu.org
2023-07-26 22:30 ` burnus@net-b.de
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