Neko 1.99.1
A portable framework for high-order spectral element flow simulations
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The appendices contain a few extra pages that are not directly related to the usage of the code. But can be useful for users and developers alike.
Name | Description | Default value |
---|---|---|
NEKO_AUTOTUNE | Force Ax auto-tuning strategy ('1D' ,'KSTEP' ) | Unset |
NEKO_LOG_FILE | Log file name, uses stdout if not set. | Unset |
NEKO_LOG_TAB_SIZE | Number of spaces added for each level of indentation in the log file. | 1 |
NEKO_LOG_LEVEL | Log verbosity level (integer > 0, default: 1) | Unset |
NEKO_GS_STRTGY | Gather-scatter device MPI sync. strategy (0 < integer < 5 ) | Unset |
NEKO_GS_COMM | Gather-scatter communication backend | Unset |
NEKO_COMM_ID | Communicator id for this process (non-negative integer) | 0 |
A number of logging levels are supported.
NEKO_LOG_LEVEL=0
: Quiet mode, minimal logging during execution.NEKO_LOG_LEVEL=1
: Default information mode, adding step informations.NEKO_LOG_LEVEL=2
: Verbose mode, logging extra details.NEKO_LOG_LEVEL=10
: Debug mode.A number of gather-scatter backends are supported.
NEKO_GS_COMM=MPI
: Host based MPINEKO_GS_COMM=MPIGPU
: Device based MPINEKO_GS_COMM=NCCL
: NCCL/RCCL using its point-to-point interfaceNEKO_GS_COMM=SHMEM
: NVSHMEM based (for NVIDIA GPUs)