Thanks to both for the pointers. The dashboard link confirms that I should be able to build with OpenMPI-5.0.8 and GCC 14 so I built GCC 14.3.0 overnight and created a new OpenMPI 5.0.8 built with it. I'm now passed the point I was stalling at previously (ELSA). Still a little way to go (DBSR doesn't seem to like me using MKL) but knowing what build packages have worked for others was the pointer I needed.<div><br /></div><div>Regards,</div><div>Mike<br /><br /></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Wednesday, August 20, 2025 at 8:10:38 PM UTC+1 Konstantin Tokarev wrote:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><br><br><div><div dir="auto">среда, 20 августа 2025 г. в 17:49:22 UTC+3, Mike Pacey: <br></div></div><div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi folks,<div><br></div><div>Has anyone managed to get this to build to MPI under Linux and can advise what compiler and MPI versions work (for reference I'm building on Rocky 8)</div><div><br></div><div>I've tried various version of Intel MPI, but one of the packages generates an error related to support for the c++17 standard, so I tried to switching to Gnu and OpenMPI</div><div><br></div><div>Older version of GNU (8.2.0 and 10.2.) both fail when building ELSA with an error "Your MPI implementation does not provide a sufficient threading level for OpenMP". Building a modern version (OpenMPI 5.0.8 with Gnu 15.2.0) fails with one of packages missing include <cstdint> statements - which seems to be a change in header files from earlier versions.</div><div><br></div><div>I'm hoping someone can provide a pointer so I can avoid having to install different versions of GNU until I find one that works!</div><div><br></div></blockquote></div><div><div><br>Hi Mike,<br><br>I'm using build instructions from <a href="https://github.com/cp2k/cp2k/blob/master/INSTALL.md" target="_blank" rel="nofollow" data-saferedirecturl="https://www.google.com/url?hl=en&q=https://github.com/cp2k/cp2k/blob/master/INSTALL.md&source=gmail&ust=1755876224815000&usg=AOvVaw21RLT0v6ciHnh9ILi7DqML">https://github.com/cp2k/cp2k/blob/master/INSTALL.md</a><br><br><span>install_cp2k_toolchain.sh script can automatically download and build almost all dependencies of CP2K, including OpenMPI and even GCC itself, which is especially useful when dealing with older Linux distributions on modern hardware.</span><br> </div></div></blockquote></div>
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