OMP2012 Flag Description
Hewlett Packard Enterprise Apollo 70 (Marvell ThunderX2 CN9980 v2.1, 2.20GHz)

Test sponsored by Indiana University

Base Compiler Invocation

C benchmarks

C++ benchmarks

Fortran benchmarks

Base Portability Flags



Base Optimization Flags

C benchmarks

C++ benchmarks

Fortran benchmarks

Shell, Environment, and Other Software Settings

Specify stack size to be allocated for each thread.
For loops running with OpenMP schedule "static", this results in (#iterations/#threads) iterations--rounded to the next lower integer--being allocated to most threads, with at most one additional iteration being allocated to some threads. Although the largest number of iterations assigned to any thread remains the same, this results in a more even sharing of iterations between threads, which may sometimes lead to a performance improvement relative to the default static thread distribution.
OMP_DYNAMIC=[ 1 | 0 ] Enables (1) or disables (0) the dynamic adjustment of the number of threads.
Enables (TRUE) or disables (FALSE) nested parallelism.
Selects the OpenMP run-time library.
Set stack size to unlimited
The command "ulimit -s unlimited" is used to set the stack size limit to unlimited.

Firmware / BIOS / Microcode Settings

Turbo/CPPC Mode
Default: Cores run at nominal frequency. Autonomous: Turbo enabled without OS based CPPC scaling. OS Governed: OS based CPPC scaling.

Flag description origin markings:

[user] Indicates that the flag description came from the user flags file.
[suite] Indicates that the flag description came from the suite-wide flags file.
[benchmark] Indicates that the flag description came from a per-benchmark flags file.

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Copyright 2012-2019 Standard Performance Evaluation Corporation
Tested with SPEC OMP2012 v1.1.
Report generated on Wed Sep 4 19:06:56 2019 by SPEC OMP2012 flags formatter v538.