Normally the system is already doing this for us. In the MPI simgrid
execution case, however, depending on the enabled optimizations for memory,
libc may not be privatized, to save the memory that would be needed for its
duplication, and to avoid the potential headaches brought by several libcs
running in the same process. The first process would then inrease optind,
and other processes would start with optind already increased.

THIBAULT Samuel authored 8 years ago and Mathieu Faverge committed 7 years ago

Add MORSE_Desc_Create_OOC, which is like MORSE_Desc_Create, but does not
actually allocate a matrix, thus letting the runtime allocate on-demand the
tiles, possibly pushing them to the disk.

Add a --ooc option to tests to enable this.