Hi Drew, Thanks for the proposal. Just for your information, there is a WIP branch on suitesparse64: https://salsa.debian.org/science-team/suitesparse/-/commits/lumin
I just ... ummm ... need some time to finish it. Of course, any help would be appreciated. On Mon, 2021-06-07 at 12:56 +0200, Drew Parsons wrote: > Package: suitesparse > Severity: normal > Control: block -1 by 961183 > Control: block 961977 by -1 > > We've been introducing a 64 bit-build for the computational stack. > This refers mainly to 64-bit indexing, enabling computation of > extremely large systems (billions of degrees of freedom) > > Some packages are already 64-bit enabled, including BLAS, PETSc. > > SuiteSparse handles the 64-bit question by defining SuiteSparse_long > (and using idx_t with metis). If I understand the SuiteSparse > configuration correctly, this means a specific configuration option > doesn't need to be set for SuiteSparse to compute large systems. > > But as part of the 64-bit computation stack in Debian, we'd need to > provide a separate suitesparse64 build in order to link suitesparse > against blas64 or metis64. (I'm assuming this is a thing we would > want > to do in the context of 64-bit computation). > > This affects cholmod, for instance, in the sense that cholmod uses > idx_t defined in metis.h. IDXTYPEWIDTH is the quantity in metis.h > which we'll need to set to 64, in order to provide 64-bit Metis (this > is requested in Bug#961183). > > Once metis64 is available, we'll be free to provide suitesparse64 > i.e. libsuitesparse64-dev (it might be that header files can be > transferred to a libsuitesparse-common-dev to share with > libsuitesparse-dev), > libcholmod64-3 (or similar), etc. > > Once suitesparse64 is available, we'll be able link it from petsc64, > which is currently linking to the standard build of suitesparse. > > Drew > > > -- System Information: > Debian Release: 11.0 > APT prefers testing-security > APT policy: (500, 'testing-security'), (500, 'unstable'), (1, > 'experimental') > Architecture: amd64 (x86_64) > Foreign Architectures: i386 > > Kernel: Linux 5.10.0-7-amd64 (SMP w/8 CPU threads) > Kernel taint flags: TAINT_OOT_MODULE > Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), > LANGUAGE=en_AU:en > Shell: /bin/sh linked to /usr/bin/dash > Init: systemd (via /run/systemd/system) > LSM: AppArmor: enabled >
