Update to v5.0.0

- ADI
    - MPID_Comm_get_lpid removed
    - MPID_Intercomm_exchange_map renamed to MPID_Intercomm_exchange
      and parameters now include tag, context_id, and will
      perform context_id exchange and lpid exchange.
  - CH4:OFI
    - added native RNDV feature
  - General
    - MPI_VERSION/MPI_SUBVERSION updated to 5 and 0.
      MPICH now supports the MPI 5.0 standard.
    - MPIR_CHKLMEM_ and MPIR_CHKPMEM_ macros are simplified
    - Rename MPIR_CVAR_DEBUG_PROGRESS_TIMEOUT to MPIR_CVAR_PROGRESS_TIMEOUT
    - MPICH now generates the MPI-IO bindings when ROMIO is build inside MPICH.
    - Yaksa is now maintained inside MPICH rather than as an external submodule.
    - Added internal builtin datatypes and external builtin datatypes are mapped to internal types
    - Removed MPIR_Find_{local,external}. Added in MPIR_Comm struct.
    - Use MPIR_Comm_get_{node,node_roots}_comm to obtain node_comm and node_roots_comm.
    - Added MPI_LOGICAL1, MPI_LOGICAL2, MPI_LOGICAL4, MPI_LOGICAL8, and MPI_LOGICAL16.
    - Added MPIX_BFLOAT16, and added software reduction support for
      MPIX_BFLOAT16 and MPIX_C_FLOAT16.
    - Reworked AVX and AVX512 support.
    - PMI 2 is now deprecated. Please consider switching to PMI 1.
    - PMI 2 thread support is removed.
    - PMI 1 upgraded to PMI 1.2, adding new API PMI_Barrier_group.
    - MPI_Session_init default to MPI_THREAD_MULTIPLE. Thread levels are global.
    - Internal collective interface replaces the last parameter
      "MPIR_Errflag_t errflag" with "int coll_attr".

Signed-off-by: Nicolas Morey <nmorey@suse.com>

README.md

@@ -0,0 +1,12 @@
+
+## Build Results
+
+Current state of mpich in openSUSE:Factory is
+
+![Factory build results](https://br.opensuse.org/status/openSUSE:Factory/mpich/standard)
+
+The current state of mpich in the devel project build (science:HPC)
+
+![Devel project build results](https://br.opensuse.org/status/science:HPC/mpich)
+
+

_multibuild

@@ -1,6 +1,6 @@
 <multibuild>
-  <package>standard</package>
-  <package>testsuite</package>
+  <package>ucx</package>
+  <package>ucx-testsuite</package>
   <package>ofi</package>
   <package>ofi-testsuite</package>
 </multibuild>

ch4-shm-fix-data-type-for-recv_bytes-in-MPIDI_POSIX_mpi_release_gather_release.patch

@@ -0,0 +1,47 @@
+commit 7d1129bb636b97d03b36412015bc6cb2d085665e
+Author: Nicolas Morey <nmorey@suse.com>
+Date:   Sat Nov 8 23:34:58 2025 +0100
+
+    ch4: shm: fix data type for recv_bytes in MPIDI_POSIX_mpi_release_gather_release
+    
+    The number of received bytes in release_gather_release is badly cast between
+    int and MPI_Aint. On most arch this is not an issue, but for Big-Endian 64b arch (s390x)
+    it ends up losing the actual value as we only copy the first 4 MSB.
+    Fix the issue by writing the whole MPI_AInt in the shm_buf instead of just an int.
+    
+    Signed-off-by: Nicolas Morey <nmorey@suse.com>
+
+diff --git src/mpid/ch4/shm/posix/release_gather/release_gather.h src/mpid/ch4/shm/posix/release_gather/release_gather.h
+index e5e055f20b57..b49e1c84e65e 100644
+--- src/mpid/ch4/shm/posix/release_gather/release_gather.h
++++ src/mpid/ch4/shm/posix/release_gather/release_gather.h
+@@ -124,7 +124,7 @@ MPL_STATIC_INLINE_PREFIX int MPIDI_POSIX_mpi_release_gather_release(void *local_
+                               datatype, root, MPIR_BCAST_TAG, comm_ptr, &status);
+                 MPIR_ERR_CHECK(mpi_errno);
+                 MPIR_Get_count_impl(&status, MPIR_BYTE_INTERNAL, &recv_bytes);
+-                MPIR_Typerep_copy(bcast_data_addr, &recv_bytes, sizeof(int),
++                MPIR_Typerep_copy(bcast_data_addr, &recv_bytes, sizeof(MPI_Aint),
+                                   MPIR_TYPEREP_FLAG_NONE);
+                 /* It is necessary to copy the coll_attr as well to handle the case when non-root
+                  * becomes temporary root as part of compositions (or smp aware colls). These temp
+@@ -149,7 +149,7 @@ MPL_STATIC_INLINE_PREFIX int MPIDI_POSIX_mpi_release_gather_release(void *local_
+             /* When error checking is enabled, place the datasize in shm_buf first, followed by the
+              * coll_attr, followed by the actual data with an offset of (2*cacheline_size) bytes from
+              * the starting address */
+-            MPIR_Typerep_copy(bcast_data_addr, &count, sizeof(int), MPIR_TYPEREP_FLAG_NONE);
++            MPIR_Typerep_copy(bcast_data_addr, &count, sizeof(MPI_Aint), MPIR_TYPEREP_FLAG_NONE);
+             /* It is necessary to copy the coll_attr as well to handle the case when non-root
+              * becomes root as part of compositions (or smp aware colls). These roots might
+              * expect same data as other ranks but different from the actual root. So only
+@@ -221,8 +221,9 @@ MPL_STATIC_INLINE_PREFIX int MPIDI_POSIX_mpi_release_gather_release(void *local_
+              * datasize is copied out from shm_buffer and compared against the count a rank was
+              * expecting. Also, the coll_attr is copied out. In case of mismatch mpi_errno is set.
+              * Actual data starts after (2*cacheline_size) bytes */
+-            int recv_bytes, recv_errflag;
+-            MPIR_Typerep_copy(&recv_bytes, bcast_data_addr, sizeof(int), MPIR_TYPEREP_FLAG_NONE);
++            MPI_Aint recv_bytes;
++	    int recv_errflag;
++            MPIR_Typerep_copy(&recv_bytes, bcast_data_addr, sizeof(MPI_Aint), MPIR_TYPEREP_FLAG_NONE);
+             MPIR_Typerep_copy(&recv_errflag, (char *) bcast_data_addr + MPIDU_SHM_CACHE_LINE_LEN,
+                               sizeof(int), MPIR_TYPEREP_FLAG_NONE);
+             MPIR_ERR_CHKANDJUMP2(recv_bytes != count, mpi_errno, MPI_ERR_OTHER,

mpich.changes

@@ -1,3 +1,110 @@
+-------------------------------------------------------------------
+Sun Jan 25 18:12:49 UTC 2026 - Nicolas Morey <nmorey@suse.com>
+
+- Update to v5.0.0
+  - ADI
+    - MPID_Comm_get_lpid removed
+    - MPID_Intercomm_exchange_map renamed to MPID_Intercomm_exchange
+      and parameters now include tag, context_id, and will
+      perform context_id exchange and lpid exchange.
+  - CH4:OFI
+    - added native RNDV feature
+  - General
+    - MPI_VERSION/MPI_SUBVERSION updated to 5 and 0.
+      MPICH now supports the MPI 5.0 standard.
+    - MPIR_CHKLMEM_ and MPIR_CHKPMEM_ macros are simplified
+    - Rename MPIR_CVAR_DEBUG_PROGRESS_TIMEOUT to MPIR_CVAR_PROGRESS_TIMEOUT
+    - MPICH now generates the MPI-IO bindings when ROMIO is build inside MPICH.
+    - Yaksa is now maintained inside MPICH rather than as an external submodule.
+    - Added internal builtin datatypes and external builtin datatypes are mapped to internal types
+    - Removed MPIR_Find_{local,external}. Added in MPIR_Comm struct.
+    - Use MPIR_Comm_get_{node,node_roots}_comm to obtain node_comm and node_roots_comm.
+    - Added MPI_LOGICAL1, MPI_LOGICAL2, MPI_LOGICAL4, MPI_LOGICAL8, and MPI_LOGICAL16.
+    - Added MPIX_BFLOAT16, and added software reduction support for
+      MPIX_BFLOAT16 and MPIX_C_FLOAT16.
+    - Reworked AVX and AVX512 support.
+    - PMI 2 is now deprecated. Please consider switching to PMI 1.
+    - PMI 2 thread support is removed.
+    - PMI 1 upgraded to PMI 1.2, adding new API PMI_Barrier_group.
+    - MPI_Session_init default to MPI_THREAD_MULTIPLE. Thread levels are global.
+    - Internal collective interface replaces the last parameter
+      "MPIR_Errflag_t errflag" with "int coll_attr".
+- Refresh ch4-shm-fix-data-type-for-recv_bytes-in-MPIDI_POSIX_mpi_release_gather_release.patch
+- Drop patch picked upstream romio-test-fix-bad-snprintf-arguments.patch
+
+-------------------------------------------------------------------
+Tue Nov  4 17:54:18 UTC 2025 - Nicolas Morey <nicolas.morey@suse.com>
+
+- Use external hwloc
+- Rename standard multibuild flavor to ucx for more clarity
+- Add ch4-shm-fix-data-type-for-recv_bytes-in-MPIDI_POSIX_mpi_release_gather_release.patch
+  to fix a datatype issue on s390x
+- Speed up testsuite by not rebuilding mpich completely
+- Fix random configure failure on aarch64
+- Fix FFLAGS
+
+-------------------------------------------------------------------
+Tue Oct 28 17:54:04 UTC 2025 - Nicolas Morey <nicolas.morey@suse.com>
+
+- Update to 4.3.2
+  - Improve libfabric provider selection when available providers have
+    negative internal score
+  - Improve error messages when Level Zero failures are detected
+  - Improve localhost detection in Hydra
+  - Update libfabric usage to silence deprecation warnings
+  - Update yaksa for improved reproducibility in code generation
+  - Add compatibility with CUDA 13
+  - Fix missing const in nondestructive request test and status query
+    functions
+  - Fix HCOLL support
+  - Fix crash with GPU-aware build when running on systems with no GPUs
+  - Fix HIP device query
+  - Fix singleton init with Hydra
+  - Fix thread safety for Level Zero memcpy functions
+  - Fix potential crash when release gather collective initialization fails
+  - Fix ch3 connect/accept protocol handling when a discard event arrives
+    after a connection is already established
+  - Fix inlining for posix eager modules in ch4/shm
+  - Fix weak attribute usage in MPI ABI build
+  - Fix potential use-after-free bug in Hydra during spawn operations
+  - Fix bug in persistent bcast algorithm
+  - Fix bug in fabric coordinate retrieval with PMIx
+  - Fix integer overflow and signed/unsigned bugs in ROMIO
+  - Fix Quobtye ROMIO driver build error
+  - Fix broken string conversion in mpi_f08 module
+  - Fix compilation issue with mpi_f08 and NAG compiler
+  - Fixes for various test program bugs
+
+-------------------------------------------------------------------
+Thu Sep 25 06:59:00 UTC 2025 - Nicolas Morey <nicolas.morey@suse.com>
+
+- Remove romio-disable-tests.patch to reenable tests in OBS.
+- Add romio-test-fix-bad-snprintf-arguments.patch to fix a test
+  issue when building with FORTIFY_SOURCE
+- Fix dependency from '*testsuite' packages to BuildRequires '*-devel'
+
+-------------------------------------------------------------------
+Sun Jun 22 17:39:27 UTC 2025 - Nicolas Morey <nicolas.morey@suse.com>
+
+- Update to 4.3.1
+  - Fix initialization in GPU-aware builds when no devices are present
+  - Fix internal pmix.h header conflict when building with an external
+    PMIx library.
+  - Fix build issue with Slurm by removing dependency on libslurm and
+    always using internal logic for parsing the Slurm hostfile.
+  - Fix potential stale GPU IPC handle usage resulting in data corruption
+    or crashes
+  - Update XPMEM thresholds to avoid excessive buffer mapping overhead
+  - Fix potential hang in ROMIO when setting info hints on certain files
+  - Improved detection of incompatible PMI[x] client/server configuration
+  - Fix use of PMIX_PREFIX attribute for certain versions of OpenPMIx
+  - Fix Intel GPU output with MPIR_CVAR_DEBUG_SUMMARY
+  - Fix F08 binding compilation with nvfortran
+  - Fix line continuation Hydra's --configfile option
+  - Fix valgrind uninitialized read warnings in ch3
+  - Fix missing mpixxx_opts.conf file with help text for mpicc and friends
+  - Fixes for several compiler warnings
+
 -------------------------------------------------------------------
 Sat Mar 29 14:25:11 UTC 2025 - Nicolas Morey <nicolas.morey@suse.com>
 

mpich.spec

@@ -1,7 +1,7 @@
 #
 # spec file for package mpich
 #
-# Copyright (c) 2025 SUSE LLC
+# Copyright (c) 2025 SUSE LLC and contributors
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -29,10 +29,10 @@
 ExclusiveArch:  do_not_build
 %endif
 
-%if "%{flavor}" == "standard"
+%if "%{flavor}" == "ucx"
 %define build_flavor ucx
 %endif
-%if "%{flavor}" == "testsuite"
+%if "%{flavor}" == "ucx-testsuite"
 %define build_flavor ucx
 %define testsuite 1
 %endif
@@ -65,11 +65,12 @@ ExclusiveArch:  do_not_build
 %define p_mandir  %{p_datadir}/man
 %define p_libdir  %{p_prefix}/%{_lib}
 %define p_libexecdir %{p_prefix}/%{_lib}
+%define p_sysconfdir %{p_prefix}/%{_sysconfdir}
 %define _moduledir /usr/share/modules/gnu-%{module_name}
 %define package_name %{pname}%{?pack_suff}
 
 Name:           %{package_name}%{?testsuite:-testsuite}
-Version:        4.3.0
+Version:        5.0.0
 Release:        0
 Summary:        High-performance and widely portable implementation of MPI
 License:        MIT
@@ -79,9 +80,10 @@ Source0:        http://www.mpich.org/static/downloads/%{version}/mpich-%{version
 Source1:        mpivars.sh
 Source2:        mpivars.csh
 Source100:      _multibuild
+Source101:      README.md
 Patch1:         autogen-only-deal-with-json-yaksa-if-enabled.patch
 Patch2:         autoconf-pull-dynamic-and-not-static-libs-from-pkg-config.patch
-Patch3:         romio-disable-tests.patch
+Patch3:         ch4-shm-fix-data-type-for-recv_bytes-in-MPIDI_POSIX_mpi_release_gather_release.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 BuildRequires:  fdupes
@@ -99,6 +101,7 @@ BuildRequires:  libtool
 BuildRequires:  libtool
 BuildRequires:  mpi-selector
 BuildRequires:  python3-devel
+BuildRequires:  hwloc-devel >= 2.0
 
 %if "%{build_flavor}" == "ofi"
 BuildRequires:  libfabric-devel
@@ -112,7 +115,6 @@ BuildRequires:  libuct-devel >= 1.7.0
 # UCX is only available for 64b archs
 ExcludeArch:    %ix86 %arm
 %endif
-
 Provides:       mpi
 BuildRequires:  Modules
 BuildRequires:  gcc-c++
@@ -122,7 +124,7 @@ Requires:       mpi-selector
 Requires(preun): mpi-selector
 
 %if 0%{?testsuite}
-BuildRequires:  %package_name = %{version}
+BuildRequires:  %package_name-devel = %{version}
 %endif
 
 %description
@@ -185,11 +187,15 @@ rm -R modules/{ucx,libfabric,json-c}
 
 # GCC10 needs an extra flag to allow badly passed parameters
 %if 0%{?suse_version} > 1500
-export FFLAGS="-fallow-argument-mismatch $FFLAGS"
-export FCFLAGS="-fallow-argument-mismatch $FCFLAGS"
+export FFLAGS="-fallow-argument-mismatch %{optflags}"
+export FCFLAGS="-fallow-argument-mismatch %{optflags}"
 %endif
-
-./autogen.sh --without-ucx --without-ofi --without-json
+%ifarch aarch64
+# For some reason, configure has random issue with defining this
+# on aarch64 only. Set it to avoid random failure
+export CROSS_F77_SIZEOF_INTEGER=4
+%endif
+autoreconf -fi
 %configure \
     --prefix=%{p_prefix} \
     --exec-prefix=%{p_prefix} \
@@ -200,8 +206,10 @@ export FCFLAGS="-fallow-argument-mismatch $FCFLAGS"
     --libexecdir=%{p_libexecdir} \
     --mandir=%{p_mandir} \
     --docdir=%{_datadir}/doc/%{name} \
+    --sysconfdir=%{p_sysconfdir} \
     --disable-rpath      \
     --disable-wrapper-rpath      \
+    --with-hwloc \
 %if "%{build_flavor}" == "ofi"
    --with-ofi \
    --with-device=ch4:ofi \
@@ -215,6 +223,21 @@ export FCFLAGS="-fallow-argument-mismatch $FCFLAGS"
 	MPICHLIB_CFLAGS="%{optflags}"			\
 	MPICHLIB_CXXFLAGS="%{optflags}"
 
+%if 0%{?testsuite}
+%install
+rm -rf %{buildroot}/*
+
+%check
+# Disable CMA. Modern kernels require specific ptrace capabilities
+# that are not available in OBS
+export MPIR_CVAR_CH4_CMA_ENABLE=0
+for dir in src/mpl src/mpi/romio/test; do
+  (
+      cd $dir &&  make check
+  )
+done
+
+%else
 make %{?_smp_mflags} VERBOSE=1
 
 %install
@@ -248,16 +271,6 @@ find %{buildroot} -name "*.a" -delete
 %fdupes %{buildroot}%{p_datadir}
 %fdupes %{buildroot}%{p_libdir}/pkgconfig
 
-%if 0%{?testsuite}
-# Remove everything from testsuite package
-# It is all contained by mpich packages
-rm -rf %{buildroot}/*
-
-%check
-make check
-
-%else
-
 # make and install mpivars files
 install -m 0755 -d %{buildroot}%{_bindir}
 sed -e 's,prefix,%p_prefix,g' -e 's,libdir,%{p_libdir},g' %{S:1} > %{buildroot}%{p_bindir}/mpivars.sh
@@ -314,12 +327,10 @@ fi
 
 %files
 %defattr(-,root,root)
-%doc CHANGES COPYRIGHT README README.envvar RELEASE_NOTES
+%doc CHANGES COPYRIGHT README README.envvar
 %dir /usr/%_lib/mpi
 %dir /usr/%_lib/mpi/gcc
 %dir /usr/share/modules
-%dir %{_moduledir}
-%{_moduledir}
 %doc %{_datadir}/doc/*
 %dir %{p_prefix}
 %dir %{p_bindir}
@@ -329,9 +340,11 @@ fi
 %dir %{p_mandir}/man1
 %dir %{p_mandir}/man3
 %dir %{p_libdir}
+%{_moduledir}
 %{p_bindir}/*
 %{p_mandir}/man1/*
 %{p_libdir}/*.so.*
+%{p_sysconfdir}
 
 %files devel
 %defattr(-,root,root)

romio-disable-tests.patch

@@ -1,24 +0,0 @@
-commit 064abd16295dd402a436d9e9e3a1ad887c6fafb6
-Author: Nicolas Morey <nmorey@suse.com>
-Date:   Wed Feb 19 19:45:08 2025 +0100
-
-    romio: disable tests
-    
-    Tests assumes mpich to be fully installed which does not work
-    for %check
-    
-    Signed-off-by: Nicolas Morey <nmorey@suse.com>
-
-diff --git src/mpi/romio/Makefile.am src/mpi/romio/Makefile.am
-index a6429766fd47..eb9ccd4f2f81 100644
---- src/mpi/romio/Makefile.am
-+++ src/mpi/romio/Makefile.am
-@@ -56,7 +56,7 @@ nodist_include_HEADERS += include/mpio.h include/mpiof.h
- 
- # ------------------------------------------------------------------------
- 
--SUBDIRS = $(external_subdirs) . test
-+SUBDIRS = $(external_subdirs) .
- DIST_SUBDIRS = test test-internal $(external_dist_subdirs)
- 
- # for the sake of parallel make and avoiding an excessive number of convenience