As mentioned in the CP2K PR 29975 comment 112 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29975#c112
on the source made available as http://www.pci.unizh.ch/vandevondele/tmp/CP2K_gcc_2007_06.tgz gfortran -O1 -fbounds-check all.f90 fails with f951: out of memory allocating 2408 bytes after a total of 1146208256 bytes this is happening with current trunk (but also earlier versions). The opteron this is running on has 16Gb of RAM, and can compile the same code at all other optimisation levels (not involving -fbounds-check) I tried. Watching top, the above processes dies at about 3Gb of virtual memory (all other options typically peak at around 2.5Gb), so this is a bit strange. Unfortunately, this out of memory message comes after about 35min of compilation time, but let me know if this is some simple additional info I can provide -- Summary: f951: out of memory with '-O1 -fbounds-check' Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: jv244 at cam dot ac dot uk http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32439
