Closed
Description
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Background information
What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch name and hash, etc.)
git branch v5.0.x
Describe how Open MPI was installed (e.g., from a source/distribution tarball, from a git clone, from an operating system distribution package, etc.)
mkdir BUILD
cd BUILD
../configure --prefix=/home/devel/mpi/openmpi/5.0.0 --without-ofi --without-ucx --with-pmix=internal --enable-debug --enable-mem-debug --disable-man-pages --disable-sphinx && make -j 32 install
NOTE: I'm configuring without ofi and ucx, pmix is internal, hwloc is from system Fedora 36 version 2.5.0
If you are building/installing from a git clone, please copy-n-paste the output from git submodule status.
$ git submodule status
8c39d8e6a95d6fa78e765b5e86c324bd8a4ecd56 3rd-party/openpmix (v4.1.2-58-g8c39d8e6)
f75647a0518b5a476011f543200fca1cf8600cb8 3rd-party/prrte (v2.0.2-99-gf75647a051)
Please describe the system on which you are running
- Operating system/version: Linux 5.17.6 (Fedora 35)
- Computer hardware: AMD Ryzen Threadripper PRO 3995WX 64-Cores
- Network type: isolated
Details of the problem
I could not find any Open MPI-specific test for MPI-4 partitioned communication. Therefore, I wrote my own trivial reproducer:
#include <mpi.h>
int main(int argc, char *argv[])
{
int buf[1] = {0};
MPI_Request sreq,rreq;
MPI_Init(&argc, &argv);
MPI_Psend_init(buf, 1, 1, MPI_INT, 0, 0, MPI_COMM_SELF, MPI_INFO_NULL, &sreq);
MPI_Precv_init(buf, 1, 1, MPI_INT, 0, 0, MPI_COMM_SELF, MPI_INFO_NULL, &rreq);
MPI_Request_free(&sreq);
MPI_Request_free(&rreq);
MPI_Finalize();
return 0;
}$ mpicc --version
gcc (GCC) 11.3.1 20220421 (Red Hat 11.3.1-2)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ mpicc -g3 tmp.c
$ ./a.out
[localhost:2807591] *** Process received signal ***
[localhost:2807591] Signal: Segmentation fault (11)
[localhost:2807591] Signal code: Address not mapped (1)
[localhost:2807591] Failing at address: (nil)
[localhost:2807591] [ 0] /lib64/libc.so.6(+0x55e30)[0x7f67508efe30]
[localhost:2807591] *** End of error message ***
Segmentation fault (core dumped)
Valgrind is not helpful:
$ valgrind -q ./a.out
==2807606== Jump to the invalid address stated on the next line
==2807606== at 0x0: ???
==2807606== by 0x4011C8: main (tmp.c:10)
==2807606== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==2807606==
[localhost:2807606] *** Process received signal ***
[localhost:2807606] Signal: Segmentation fault (11)
[localhost:2807606] Signal code: Invalid permissions (2)
[localhost:2807606] Failing at address: (nil)
[localhost:2807606] [ 0] /lib64/libc.so.6(+0x55e30)[0x4d71e30]
[localhost:2807606] *** End of error message ***
Segmentation fault (core dumped)
I cannot get why the jump address is 0x0. The symbol is definitely in the library:
$ nm /home/devel/mpi/openmpi/5.0.0/lib/libmpi.so | grep Psend_init
0000000000133ac5 W MPI_Psend_init
0000000000133ac5 T PMPI_Psend_init
Perhaps a compiler bug?