I'm trying to track down a shared memory issue in openmpi on i686 rawhide:
https://bugzilla.redhat.com/show_bug.cgi?id=2142304 https://github.com/open-mpi/ompi/issues/11065and the oddity that I'm looking at now is that a strange mmap() system call is being made rather than mmap2() which appears to be standard on i686:
[pid 84] 19:38:24 mmap(NULL) = -1 EFAULT (Bad address) normally I see calls like:[pid 157] mmap2(NULL, 62328, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 24, 0) = 0xf5a74000
Now is there any way that the openmpi code could be affecting how mmap() is being called? It basically does:
mmap(NULL, real_size, PROT_READ | PROT_WRITE, MAP_SHARED, seg_id, 0)
on a file it created in /dev/shm/. Thanks. -- Orion Poplawski he/him/his - surely the least important thing about me IT Systems Manager 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane or...@nwra.com Boulder, CO 80301 https://www.nwra.com/
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