CLAPACK test programs reporting stack overflow on Windows about lapack HOT 4 OPEN

Thanks Derek. This is a known issue but you explain it very clearly. CLAPACK is not part of this GitHub repository. But it is fine to report the issue here. Thanks for doing this.

from lapack.

No problem, thanks for the kind words. I ran into this a while ago but finally found some time to poke around.

Glad that it was relatively easy to fix by replacing the TESTING/CMakeLists.txt lines shown above with this:

if(MSVC)
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:12000000")
endif()

Update: Confirmed this works for both debug + release configurations as well as for both 32- and 64-bit builds.

from lapack.

IIRC this has been fixed in LAPACK quite a while ago by changing the allocation method used for several huge arrays in the testsuite. Unfortunately CLAPACK has not been updated in a long time and many current LAPACK routines can no longer be machine translated with the equally ancient f2c as they use newer language features of Fortran.

from lapack.

Got it, thanks for the information. I've been working on a pretty ancient codebase that depends on CLAPACK, albeit in a bit of a roundabout manner to avoid including f2c.h directly, but maybe it's time to considering migrating to LAPACKE instead.

from lapack.