| 2020-10-09 17:01:44 |
Matheus Castro |
bug |
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added bug |
| 2020-10-09 17:01:44 |
Matheus Castro |
attachment added |
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Code that shows the bug https://bugs.launchpad.net/bugs/1899199/+attachment/5420027/+files/code.zip |
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| 2020-10-09 17:04:11 |
Matheus Castro |
attachment added |
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main.c https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1899199/+attachment/5420028/+files/main.c |
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| 2020-10-09 17:04:34 |
Matheus Castro |
attachment removed |
main.c https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1899199/+attachment/5420028/+files/main.c |
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| 2020-10-09 17:06:48 |
Matheus Castro |
attachment added |
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library.c https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1899199/+attachment/5420041/+files/library.c |
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| 2020-10-09 17:06:57 |
Matheus Castro |
attachment added |
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main.c https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1899199/+attachment/5420042/+files/main.c |
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| 2020-10-09 17:07:16 |
Matheus Castro |
attachment removed |
main.c https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1899199/+attachment/5420042/+files/main.c |
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| 2020-10-09 17:07:26 |
Matheus Castro |
attachment removed |
library.c https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1899199/+attachment/5420041/+files/library.c |
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| 2020-10-09 17:13:26 |
Matheus Castro |
description |
This bug was observed on multiple versions of Ubuntu and clang.
Versions:
Ubuntu: Ubuntu 18.04.5 LTS, Ubuntu 20.04.1 LTS
clang: 8.0.0-3~ubuntu18.04.2, 9.0.0-2~ubuntu18.04.2, 10.0.0-4ubuntu1~18.04.2,
9.0.1-12, 10.0.0-4ubuntu1
When trying to use OMPT (https://www.openmp.org/spec-html/5.0/openmpch4.html) by defining the corresponding functions in an shared object and loading it with LD_PRELOAD gives no result. The functions are not called, not even the first function: ompt_start_tool.
I have included a small code that shows the bug.
To run it just do:
make
make run
The expected output is (up to execution reordering):
ompt_start_tool was called
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
While Ubuntu outputs (up to execution reordering):
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
It does not call ompt_start_tool.
It works as expected on Fedora 32 with clang version 10.0.1-2. It also works as expected on Debian GNU/Linux bullseye/sid with clang version 9.0.1-14. Thus, it's a bug. |
This bug was observed on multiple versions of Ubuntu and clang.
Versions:
Ubuntu: Ubuntu 18.04.5 LTS, Ubuntu 20.04.1 LTS
clang: 8.0.0-3~ubuntu18.04.2, 9.0.0-2~ubuntu18.04.2, 10.0.0-4ubuntu1~18.04.2,
9.0.1-12, 10.0.0-4ubuntu1
When trying to use OMPT (https://www.openmp.org/spec-html/5.0/openmpch4.html) by defining the corresponding functions in an shared object and loading it with LD_PRELOAD it gives no result. The functions are not called, not even the first function: ompt_start_tool.
I have included a small code that shows the bug.
To run it just do:
make
make run
The expected output is (up to execution reordering):
ompt_start_tool was called
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
While Ubuntu outputs (up to execution reordering):
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
It does not call ompt_start_tool.
It works as expected on Fedora 32 with clang version 10.0.1-2. It also works as expected on Debian GNU/Linux bullseye/sid with clang version 9.0.1-14. Thus, it's a bug. |
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| 2020-10-09 17:14:03 |
Matheus Castro |
description |
This bug was observed on multiple versions of Ubuntu and clang.
Versions:
Ubuntu: Ubuntu 18.04.5 LTS, Ubuntu 20.04.1 LTS
clang: 8.0.0-3~ubuntu18.04.2, 9.0.0-2~ubuntu18.04.2, 10.0.0-4ubuntu1~18.04.2,
9.0.1-12, 10.0.0-4ubuntu1
When trying to use OMPT (https://www.openmp.org/spec-html/5.0/openmpch4.html) by defining the corresponding functions in an shared object and loading it with LD_PRELOAD it gives no result. The functions are not called, not even the first function: ompt_start_tool.
I have included a small code that shows the bug.
To run it just do:
make
make run
The expected output is (up to execution reordering):
ompt_start_tool was called
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
While Ubuntu outputs (up to execution reordering):
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
It does not call ompt_start_tool.
It works as expected on Fedora 32 with clang version 10.0.1-2. It also works as expected on Debian GNU/Linux bullseye/sid with clang version 9.0.1-14. Thus, it's a bug. |
This bug was observed on multiple versions of Ubuntu and clang.
Versions:
Ubuntu: Ubuntu 18.04.5 LTS, Ubuntu 20.04.1 LTS
clang: 8.0.0-3~ubuntu18.04.2, 9.0.0-2~ubuntu18.04.2, 10.0.0-4ubuntu1~18.04.2,
9.0.1-12, 10.0.0-4ubuntu1
When trying to use OMPT (https://www.openmp.org/spec-html/5.0/openmpch4.html) by defining the corresponding functions in an shared object and loading it with LD_PRELOAD it gives no result. The functions are not called, not even the first function: ompt_start_tool.
I have included a small code to reproduce the bug.
To run it just do:
make
make run
The expected output is (up to execution reordering):
ompt_start_tool was called
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
While Ubuntu outputs (up to execution reordering):
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
It does not call ompt_start_tool.
It works as expected on Fedora 32 with clang version 10.0.1-2. It also works as expected on Debian GNU/Linux bullseye/sid with clang version 9.0.1-14. Thus, it's a bug. |
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| 2020-10-09 20:24:21 |
Matheus Castro |
description |
This bug was observed on multiple versions of Ubuntu and clang.
Versions:
Ubuntu: Ubuntu 18.04.5 LTS, Ubuntu 20.04.1 LTS
clang: 8.0.0-3~ubuntu18.04.2, 9.0.0-2~ubuntu18.04.2, 10.0.0-4ubuntu1~18.04.2,
9.0.1-12, 10.0.0-4ubuntu1
When trying to use OMPT (https://www.openmp.org/spec-html/5.0/openmpch4.html) by defining the corresponding functions in an shared object and loading it with LD_PRELOAD it gives no result. The functions are not called, not even the first function: ompt_start_tool.
I have included a small code to reproduce the bug.
To run it just do:
make
make run
The expected output is (up to execution reordering):
ompt_start_tool was called
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
While Ubuntu outputs (up to execution reordering):
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
It does not call ompt_start_tool.
It works as expected on Fedora 32 with clang version 10.0.1-2. It also works as expected on Debian GNU/Linux bullseye/sid with clang version 9.0.1-14. Thus, it's a bug. |
This bug was observed on multiple versions of Ubuntu and clang.
Versions:
Ubuntu: Ubuntu 18.04.5 LTS, Ubuntu 20.04.1 LTS
clang: 8.0.0-3~ubuntu18.04.2, 9.0.0-2~ubuntu18.04.2, 10.0.0-4ubuntu1~18.04.2,
9.0.1-12, 10.0.0-4ubuntu1
When trying to use OMPT (https://www.openmp.org/spec-html/5.0/openmpch4.html) by defining the corresponding functions in an shared object and loading it with LD_PRELOAD it gives no result. The functions are not called, not even the first function: ompt_start_tool.
I have included a small code to reproduce the bug.
To run it just do:
make
make run
The expected output is (up to execution reordering):
ompt_start_tool was called
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
While Ubuntu outputs (up to execution reordering):
Hello from thread 0 of 4!
Hello from thread 3 of 4!
Hello from thread 2 of 4!
Hello from thread 1 of 4!
It does not call ompt_start_tool.
It works as expected on Fedora 32 with clang version 10.0.1-2. It also works as expected on Debian GNU/Linux bullseye/sid with clang version 9.0.1-14.
The problem lies in libomp.so.5. When replacing it by the one from a working Debian version the program runs as expected. |
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| 2020-10-09 20:25:51 |
Matheus Castro |
bug task added |
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llvm-toolchain-8 (Ubuntu) |
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| 2020-10-09 20:26:12 |
Matheus Castro |
bug task added |
|
llvm-toolchain-9 (Ubuntu) |
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| 2020-10-09 20:26:27 |
Matheus Castro |
bug task added |
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llvm-toolchain-10 (Ubuntu) |
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| 2020-10-09 21:03:47 |
Matheus Castro |
summary |
OMPT with LD_PRELOAD not working |
[libomp.so.5] OMPT with LD_PRELOAD not working |
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| 2022-03-10 15:11:34 |
Launchpad Janitor |
llvm-defaults (Ubuntu): status |
New |
Confirmed |
|
| 2022-03-10 15:11:34 |
Launchpad Janitor |
llvm-toolchain-10 (Ubuntu): status |
New |
Confirmed |
|
| 2022-03-10 15:11:34 |
Launchpad Janitor |
llvm-toolchain-8 (Ubuntu): status |
New |
Confirmed |
|
| 2022-03-10 15:11:34 |
Launchpad Janitor |
llvm-toolchain-9 (Ubuntu): status |
New |
Confirmed |
|
