>Can you add some printf inside hwloc_linux_set_area_membind() in src/topology-linux.c to see if ENOMEM comes from the mbind >syscall or not?

I added printf inside that function, but ENOMEM does not come from there.

>Have you run your application through valgrind or another memory-checking debugger?

I tried with valgrind :

valgrind --track-origins=yes --log-file=output_valgrind --leak-check=full --tool=memcheck --show-reachable=yes ./main_hybrid_bind_mem

==25687== Warning: set address range perms: large range [0x39454040, 0x2218d4040) (undefined)

==25687==

==25687== Valgrind's memory management: out of memory:

==25687== newSuperblock's request for 4194304 bytes failed.

==25687== 34253180928 bytes have already been allocated.

==25687== Valgrind cannot continue. Sorry.

I attach the full output.

The code dies also using OpenMP pure code. Very misteriously.

2012/9/5 Jeff Squyres <jsquyres@cisco.com>

On Sep 5, 2012, at 2:36 PM, Gabriele Fatigati wrote:

> I don't think is a simply out of memory since NUMA node has 48 GB, and I'm allocating just 8 GB.

Mmm. Probably right.

Have you run your application through valgrind or another memory-checking debugger?

I've seen cases of heap corruption lead to malloc incorrectly failing with ENOMEM.

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Jeff Squyres
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