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IDProjectCategoryView StatusLast Update
0018019CentOS-7centos-releasepublic2021-01-15 19:59
Reporterthx8957 Assigned To 
PrioritynormalSeverityminorReproducibilityalways
Status newResolutionopen 
Platformdesktop, serverOSCentOSOS Version7
Product Version7.9.2009 
Summary0018019: ucx library reports erroneous error message
DescriptionProblem in CentOS7 stock package ucx-1.5.2-1.el7.x86_64, potentially affecting use of openmpi3-3.1.3-2.el7.x86_64

This error message appears when in use, but it unknown if this is an actual error:

sys.c:618 UCX ERROR shmget(size=2097152 flags=0xfb0) for mm_recv_desc failed: Operation not permitted, please check shared memory limits by 'ipcs -l'


Steps To Reproduceenter command: ucx_info -d
Output always includes this error message:

sys.c:618 UCX ERROR shmget(size=2097152 flags=0xfb0) for mm_recv_desc failed: Operation not permitted, please check shared memory limits by 'ipcs -l'
Additional InformationThe subsequent use of the command recommended in the error message, 'ipcs -l' clearly shows there is no problem:
------ Shared Memory Limits --------
max number of segments = 4096
max seg size (kbytes) = 18014398509465599
max total shared memory (kbytes) = 18014398442373116
min seg size (bytes) = 1

This same "UCX ERROR" message also appears while using openmpi library methods from the package 'openmpi3-3.1.3-2.el7.x86_64', but it is unknown (to me) if it might actually affect MPI-related operations.
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Date Modified Username Field Change
2021-01-15 19:59 thx8957 New Issue