Comments (7)
I'd call it
KHIOPS_MPI_QUIET
because there is an--verbose
option in OpenMPI in addition to--quiet
.
One argument for the current KHIOPS_MPI_VERBOSE
would be that, depending on the MPI back-end, this verbosity might mean different things:
- for OpenMPI, which is the default back-end for native installations on Linux (but can be overridden via the
KHIOPS_MPI_COMMAND
andKHIOPS_MPI_LIB
environment variables) we define this as being a switch on the--quiet
flag (and this might change in the future - perhaps by combining it with the--verbose
flag ? @bruno-at-orange ?) - for MPICH (possible alternative back-end on some platforms - e.g.
khiops-core
on Conda), this does nothing currently, but could do in the future, - etc.
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I'd call it KHIOPS_MPI_QUIET
because there is an --verbose
option in OpenMPI in addition to --quiet
.
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The first proposal is fine: KHIOPS_MPI_VERBOSE
which is set to "false" by default
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- What happens if it is not defined in the environment? It acts as a if it were
false
? - What happens if it is defined values other than
true
andfalse
?
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- What happens if it is not defined in the environment? It acts as a if it were
false
?
I would say "yes".
* What happens if it is defined values other than `true` and `false` ?
I would say anything != true
acts like false
.
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Ok, @bruno-at-orange do you confirm the behavior above ?
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My understading is that in khiops-env
the KHIOPS_MPI_VERBOSE
variable is set to "false" by default (that is, if it is not already defined in the environment). If this variable's value is different from "true" (which includes the default "false" or whatever the user has set), then --quiet
is added to mpiexec
. If this variable's value equals "true", then the --quiet
flag is not added to mpiexec
.
Is this also your understanding @bruno-at-orange ?
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