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Subject: Re: [OMPI users] v1.3: mca_common_sm_mmap_init error
From: Rolf vandeVaart (Rolf.Vandevaart_at_[hidden])
Date: 2009-01-29 15:05:54


I have not seen this before. I assume that for some reason, the shared
memory transport layer cannot create the file it uses for communicating
within a node. Open MPI then selects some other transport (TCP, openib)
to communicate within the node so the program runs fine.

The code has not changed that much from 1.2 to 1.3, but it is a little
different. Let me see if I can reproduce the problem.

Rolf

Mostyn Lewis wrote:
> Sort of ditto but with SVN release at 20123 (and earlier):
>
> e.g.
>
> [r2250_46:30018] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_46_0/25682/1/shared_mem_pool.r2250_46
>
> failed with errno=2
> [r2250_63:05292] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_63_0/25682/1/shared_mem_pool.r2250_63
>
> failed with errno=2
> [r2250_57:17527] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_57_0/25682/1/shared_mem_pool.r2250_57
>
> failed with errno=2
> [r2250_68:13553] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_68_0/25682/1/shared_mem_pool.r2250_68
>
> failed with errno=2
> [r2250_50:06541] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_50_0/25682/1/shared_mem_pool.r2250_50
>
> failed with errno=2
> [r2250_49:29237] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_49_0/25682/1/shared_mem_pool.r2250_49
>
> failed with errno=2
> [r2250_66:19066] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_66_0/25682/1/shared_mem_pool.r2250_66
>
> failed with errno=2
> [r2250_58:24902] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_58_0/25682/1/shared_mem_pool.r2250_58
>
> failed with errno=2
> [r2250_69:27426] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_69_0/25682/1/shared_mem_pool.r2250_69
>
> failed with errno=2
> [r2250_60:30560] mca_common_sm_mmap_init: open
> /tmp/45139.1.all.q/openmpi-sessions-mostyn_at_r2250_60_0/25682/1/shared_mem_pool.r2250_60
>
> failed with errno=2
>
> File not found in sm.
>
> 10 of them across 32 nodes (8 cores per node (2 sockets x quad-core))
> "Apparently harmless"?
>
> DM
>
> On Tue, 27 Jan 2009, Prentice Bisbal wrote:
>
>> I just installed OpenMPI 1.3 with tight integration for SGE. Version
>> 1.2.8 was working just fine for several months in the same arrangement.
>>
>> Now that I've upgraded to 1.3, I get the following errors in my standard
>> error file:
>>
>> mca_common_sm_mmap_init: open /tmp/968.1.all.q/openmpi-sessions-prent
>> ice_at_node09.aurora_0/21400/1/shared_mem_pool.node09.aurora failed with
>> errno=2
>> [node23.aurora:20601] mca_common_sm_mmap_init: open
>> /tmp/968.1.all.q/openmpi-sessions-prent
>> ice_at_node23.aurora_0/21400/1/shared_mem_pool.node23.aurora failed with
>> errno=2
>> [node46.aurora:12118] mca_common_sm_mmap_init: open
>> /tmp/968.1.all.q/openmpi-sessions-prent
>> ice_at_node46.aurora_0/21400/1/shared_mem_pool.node46.aurora failed with
>> errno=2
>> [node15.aurora:12421] mca_common_sm_mmap_init: open
>> /tmp/968.1.all.q/openmpi-sessions-prent
>> ice_at_node15.aurora_0/21400/1/shared_mem_pool.node15.aurora failed with
>> errno=2
>> [node20.aurora:12534] mca_common_sm_mmap_init: open
>> /tmp/968.1.all.q/openmpi-sessions-prent
>> ice_at_node20.aurora_0/21400/1/shared_mem_pool.node20.aurora failed with
>> errno=2
>> [node16.aurora:12573] mca_common_sm_mmap_init: open
>> /tmp/968.1.all.q/openmpi-sessions-prent
>> ice_at_node16.aurora_0/21400/1/shared_mem_pool.node16.aurora failed with
>> errno=2
>>
>> I've tested 3-4 different times, and the number of hosts that produces
>> this error varies, as well as which hosts produce this error. My program
>> seems to run fun, but it's just a simple "Hello, World!" program. Any
>> ideas? Is this a bug in 1.3?
>>
>>
>> -- Prentice
>> --
>> Prentice Bisbal
>> Linux Software Support Specialist/System Administrator
>> School of Natural Sciences
>> Institute for Advanced Study
>> Princeton, NJ
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
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