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Bug#1088094: marked as done (gcc-13-offload-nvptx: offload to nvptx-none broken)

Your message dated Tue, 26 Nov 2024 12:35:00 +0000
with message-id <E1tFumS-006Sl6-Df@fasolo.debian.org>
and subject line Bug#1088094: fixed in nvptx-tools 0.20240810-2
has caused the Debian Bug report #1088094,
regarding gcc-13-offload-nvptx: offload to nvptx-none broken
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
1088094: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1088094
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: gcc-13-offload-nvptx
Version: 13.3.0-8
Severity: grave
Justification: renders package unusable

Dear Maintainer,

Any attempt to compile code that offloads to nvptx-none fails with the
following error:

gmulas@capitanata:~/mintest$ gcc -fopenmp -O3 -ggdb -fcf-protection=check -foffload=default -foffload=nvptx-none="-O3 -ggdb -fopt-info -lm -latomic -mgomp" -o mintest mintest.c 
mintest.c:5:9: optimized: basic block part vectorized using 16 byte vectors
collect2: fatal error: ld terminated with signal 11 [Errore di segmentazione], core dumped
compilation terminated.
nvptx mkoffload: fatal error: x86_64-linux-gnu-accel-nvptx-none-gcc-13 returned 1 exit status
compilation terminated.
lto-wrapper: fatal error: /usr/libexec/gcc/x86_64-linux-gnu/13//accel/nvptx-none/mkoffload returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status

This occurs with any gcc (or g++) version installable on debian sid, so I
suspect it is connected to some update on the nvptx-tools side, but since it
is reproduced using gcc I am initially reporting the bug on
gcc-13-offload-nvptx. If/when you can trace it to some other package, of
course feel free to move the bug where it belongs. This is rather critical,
since it makes it impossible to compile any code that offloads to nvptx. I
attach a minimal test code that reproduces it. It compiles and runs
flawlessly on a debian stable machine.

Thanks in advance, best regards
Giacomo Mulas

#include <stdio.h>
#include <stdlib.h>
#include <omp.h>
void saxpy(float a, float* x, float* y, int sz) {
#pragma omp target teams distribute parallel for simd \
   num_teams(3) map(to:x[0:sz]) map(tofrom:y[0:sz])
   for (int i = 0; i < sz; i++) {
      if (omp_is_initial_device()) {
         printf("Running on host\n");    
      } else {
         int nthreads= omp_get_num_threads();
         int nteams= omp_get_num_teams(); 
         printf("Running on device with %d teams (fixed) in total and %d threads in each team\n",nteams,nthreads);
      }
      printf("Thread %d %i\n", omp_get_thread_num(), i );
      y[i] = a * x[i] + y[i];
   }
}
int main(int argc, char** argv) {
   float a = 2.0;
   int sz = 16;
   float *x = (float *) calloc( sz, sizeof *x );
   float *y = (float *) calloc( sz, sizeof *y );
   //Set values
   int num_devices = omp_get_num_devices();
   printf("Number of available devices %d\n", num_devices);
   saxpy( a, x, y, sz );
   return 0;
}


-- System Information:
Debian Release: trixie/sid
  APT prefers unstable
  APT policy: (401, 'unstable'), (10, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.11.9-amd64 (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gcc-13-offload-nvptx depends on:
ii  gcc-13                 13.3.0-8
ii  gcc-13-base            13.3.0-8
ii  libc6                  2.40-3
ii  libc6-dev              2.40-3
ii  libgmp10               2:6.3.0+dfsg-2+b2
ii  libgomp-plugin-nvptx1  14.2.0-8
ii  libmpc3                1.3.1-1+b3
ii  libmpfr6               4.2.1-1+b2
ii  libzstd1               1.5.6+dfsg-1+b1
ii  nvptx-tools            0.20240810-1
ii  zlib1g                 1:1.3.dfsg+really1.3.1-1+b1

gcc-13-offload-nvptx recommends no packages.

gcc-13-offload-nvptx suggests no packages.

-- no debconf information

--- End Message ---
--- Begin Message --- 
Source: nvptx-tools
Source-Version: 0.20240810-2
Done: Matthias Klose <doko@debian.org>

We believe that the bug you reported is fixed in the latest version of
nvptx-tools, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1088094@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Matthias Klose <doko@debian.org> (supplier of updated nvptx-tools package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


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Hash: SHA512

Format: 1.8
Date: Tue, 26 Nov 2024 11:55:46 +0100
Source: nvptx-tools
Architecture: source
Version: 0.20240810-2
Distribution: unstable
Urgency: medium
Maintainer: Debian GCC Maintainers <debian-gcc@lists.debian.org>
Changed-By: Matthias Klose <doko@debian.org>
Closes: 1048610 1088093 1088094 1088095
Changes:
 nvptx-tools (0.20240810-2) unstable; urgency=medium
 .
   * Fix libiberty include path. Closes: #1088093, #1088094, #1088095.
   * Fix the clean target. Closes: #1048610.
   * Bump debhelper version.
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