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If the schedule type specified for the OMP_SCHEDULE is not
one of the valid types (static, dynamic,
guided, auto,
sunw_mp_sched_reserved), then the environment variable is
ignored, and the default schedule (static with no chunk size)
is used. A warning message is issued if SUNW_MP_WARN is set to
TRUE or a callback function is registered by a call to
sunw_mp_register_warn().
If the schedule type specified for the OMP_SCHEDULE
environment variable is static, dynamic, or
guided but the chunk size specified is a negative integer,
then the chunk size used is as follows: For static, there is no
chunk size. For dynamic and guided, the
chunk size is 1. A warning message is issued if SUNW_MP_WARN is
set to TRUE or a callback function is registered by a call to
sunw_mp_register_warn().
If not set, a default value of static (with no chunk size)
is used.
Example: %
setenv OMP_SCHEDULE "GUIDED,4"
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If the value specified for OMP_NUM_THREADS is not a
positive integer, then the environment variable is ignored. A warning message is
issued if SUNW_MP_WARN is set to TRUE or a
callback function is registered by a call to
sunw_mp_register_warn().
If the value specified is greater than the number of threads the
implementation can support, the following actions are taken:
-
If dynamic adjustment of the number of threads is enabled, then the number
of threads will be reduced and a warning message will be issued if
SUNW_MP_WARN is set to TRUE or a
callback function is registered by a call to
sunw_mp_register_warn().
-
If dynamic adjustment of the number of threads is disabled, then an error
message will be issued and the program will stop execution.
If not set, the default is equal to the number of cores on the machine, capped
at 32.
Example: %
setenv OMP_NUM_THREADS 16
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If the value specified for OMP_DYNAMIC is neither
TRUE nor FALSE, then the value will be
ignored, and the default value TRUE will be used. A warning
message will be issued if SUNW_MP_WARN is set to
TRUE or a callback function is registered by a call to
sunw_mp_register_warn().
If not set, the default is TRUE.
Example: %
setenv OMP_DYNAMIC FALSE
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If the value specified for OMP_PROC_BIND is not
TRUE, FALSE, or a comma separated list of
master, close, or
spread, then the process is exited with a nonzero
status.
If an initial thread cannot be bound to the first place in the OpenMP place
list, then the process is exited with a nonzero status.
If not set, the default is FALSE.
Example: %
setenv OMP_PROC_BIND spread
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If the value specified for OMP_PLACES is not valid or
cannot be fufilled, then the process is exited with a nonzero status.
If not set, the default is cores.
Example: %
setenv OMP_PLACES sockets
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If the value specified for OMP_NESTED is neither
TRUE nor FALSE, then the value will be
ignored and the default value FALSE will be used. A warning
message will be issued if SUNW_MP_WARN is set to
TRUE or a callback function is registered by a call to
sunw_mp_register_warn().
If not set, the default is FALSE.
Example: %
setenv OMP_NESTED TRUE
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If the value specified for OMP_STACKSIZE does not conform
to the specified format, then the value will be ignored and the default value (4
Megabytes for 32-bit applications, and 8 Megabytes for 64-bit applications) will
be used. A warning message will be issued if SUNW_MP_WARN is
set to TRUE or a callback function is registered by a call to
sunw_mp_register_warn().
The default stack size of a helper thread is 4 Megabytes for 32-bit
applications, and 8 Megabytes for 64-bit applications.
Example: %
setenv OMP_STACKSIZE 10M
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The ACTIVE behavior for a thread is
spin. The PASSIVE behavior for a thread
is sleep after possibly spinning for a while.
If not set, the default is PASSIVE.
Example: %
setenv OMP_WAIT_POLICY ACTIVE
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If the value specified for OMP_MAX_ACTIVE_LEVELS is not a
nonnegative integer, then the value will be ignored and the default value of 4
will be used. A warning message will be issued if SUNW_MP_WARN
is set to TRUE or a callback function is registered by a call
to sunw_mp_register_warn().
If not set, the default is 4.
Example: %
setenv OMP_MAX_ACTIVE_LEVELS 8
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If the value specified for OMP_THREAD_LIMIT is not a
positive integer, then the value will be ignored and the default value of 1024
will be used. A warning message will be issued if SUNW_MP_WARN
is set to TRUE or a callback function is registered by a call
to sunw_mp_register_warn().
If not set, the default is 1024.
Example: %
setenv OMP_THREAD_LIMIT 128
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If the value specified for OMP_DISPLAY_ENV is not
TRUE, FALSE, or
VERBOSE, then the value will be ignored, and the default value
FALSE will be used. A warning message will be issued if
SUNW_MP_WARN is set to TRUE or a callback
function is registered by a call to
sunw_mp_register_warn().
If not set, the default is FALSE.
Example: %
setenv OMP_DISPLAY_ENV VERBOSE
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