Environment Variables

MindSpore environment variables are as follows:

Operators Compile

Environment Variable	Function	Type	Value Range	Description
MS_BUILD_PROCESS_NUM	Specifies the number of parallel operator build processes during Ascend backend compilation. Note: Only Ascend backend.	Integer	The number of parallel operator build processes ranges from 1 to 24.
MS_COMPILER_CACHE_ENABLE	Specifies whether to save or load the cache of the graph compiled by front-end. The function is the same as the enable_compile_cache in MindSpore context. Note: This environment variable has lower precedence than the context enable_compile_cache.	Integer	0: Disable the compile cache 1: Enable the compile cache	If it is used together with MS_COMPILER_CACHE_PATH, the directory for storing the cache files is ${MS_COMPILER_CACHE_PATH} /rank_${RANK_ID} /graph_cache/. RANK_ID is the unique ID for multi-cards training, the single card scenario defaults to RANK_ID=0.
MS_COMPILER_CACHE_PATH	MindSpore compile cache directory and save the graph or operator cache files like graph_cache, kernel_meta, somas_meta.	String	File path, which can be a relative path or an absolute path.
MS_COMPILER_OP_LEVEL	Enable debug function and generate the TBE instruction mapping file during Ascend backend compilation. Note: Only Ascend backend.	Integer	The value of compiler op level should be one of [0, 1, 2, 3, 4]. 0: Turn off op debug and delete op compile cache files 1: Turn on debug, generate the *.cce and *_loc.json 2: Turn on debug, generate the *.cce and *_loc.json files and turn off the compile optimization switch (The CCEC compiler option is set to -O0-g) at the same time 3: Turn off op debug 4: Turn off op debug, generate the *.cce and *_loc.json files, generate UB fusion calculation description files ({$kernel_name}_compute.json) for fusion ops
MS_DEV_DISABLE_PREBUILD	Turn off operator prebuild processes during Ascend backend compilation. The prebuild processing may fix the attr fusion_type of the operate, and then affect the operator fusion. If the performance of fusion operator can not meet the expectations, try to turn on this environment variable to verify if there is the performance problem of fusion operator. Note: Only Ascend backend.	Boolean	true: turn off prebuild false: enable prebuild

For more information, see Incremental Operator Build and FAQ.

Graph Kernel Fusion

Environment Variable	Function	Type	Value Range	Description
MS_GRAPH_KERNEL_FLAGS	Control options of graph kernel fusion, it can be used to open or close the graph kernel fusion, supports fine-tune of several optimizations in graph kernel fusion and supports dumping the fusion process, which is helpful in problems location and performance tuning. Note: This environment variable will be deprecated and removed in a future version, use graph_kernel_flags in the context instead.	String	Refer to the value setting of graph_kernel_flags in mindspore/context.py Note: The priority of environment variables is higher than context, that is, if both environment variables and context are set at the same time, only the settings in the environment variables will take effect.

Parallel Training

Environment Variable	Function	Type	Value Range	Description
RANK_ID	Specifies the logical ID of the Ascend AI Processor called during deep learning.	Integer	The value ranges from 0 to 7. When multiple servers are running concurrently, DEVICE_ID`s in different servers may be the same. RANK_ID can be used to avoid this problem. `RANK_ID = SERVER_ID * DEVICE_NUM + DEVICE_ID
RANK_SIZE	Specifies the number of Ascend AI Processors to be called during deep learning. Note: When the Ascend AI Processor is used, specified by user when a distributed case is executed.	Integer	The number of Ascend AI Processors to be called ranges from 1 to 8.	This variable is used together with RANK_TABLE_FILE
RANK_TABLE_FILE	Specifies the file to which a path points, including device_ip corresponding to multiple Ascend AI Processor device_id. Note: When the Ascend AI Processor is used, specified by user when a distributed case is executed.	String	File path, which can be a relative path or an absolute path.	This variable is used together with RANK_SIZE.

For more information, see Distributed Parallel Training Example.

Running Data Recorder

Environment Variable	Function	Type	Value Range	Description
MS_RDR_ENABLE	Determines whether to enable running data recorder (RDR). If a running exception occurs in MindSpore, the pre-recorded data in MindSpore is automatically exported to assist in locating the cause of the running exception.	Integer	1：enables RDR 0：disables RDR	This variable is used together with MS_RDR_MODE and MS_RDR_PATH.
MS_RDR_MODE	Determines the exporting mode of running data recorder (RDR).	Integer	1：export data when training process terminates in exceptional scenario 2：export data when training process terminates in both exceptional scenario and normal scenario. Default: 1.	This variable is used together with MS_RDR_ENABLE=1.
MS_RDR_PATH	Specifies the system path for storing the data recorded by running data recorder (RDR).	String	Directory path, which should be an absolute path.	This variable is used together with MS_RDR_ENABLE=1. The final directory for recording data is ${MS_RDR_PATH} /rank_${RANK_ID}/rdr/. RANK_ID is the unique ID for multi-cards training, the single card scenario defaults to RANK_ID=0.

For more information, see Running Data Recorder.

Log

Environment Variable	Function	Type	Value Range	Description
GLOG_log_dir	Specifies the log level.	String	File path, which can be a relative path or an absolute path.	This variable is used together with GLOG_logtostderr
GLOG_log_max	Controls the size of the mindspire C++ module log file.	Integer	>0. Default: 50
GLOG_logtostderr	Specifies the log output mode.	Integer	1: logs are output to the screen 0: logs are output to a file Default: 1	This variable is used together with GLOG_log_dir
GLOG_stderrthreshold	The log module will print logs to the screen when these logs are output to a file. This environment variable is used to control the log level printed to the screen in this scenario.	Integer	0-DEBUG 1-INFO 2-WARNING 3-ERROR Default: 2
GLOG_v	Specifies the log level.	Integer	0-DEBUG 1-INFO 2-WARNING 3-ERROR Default: 2.
logger_backupCount	Controls the number of mindspire Python module log files.	Integer	Default: 30
logger_maxBytes	Controls the size of the mindspire Python module log file.	Integer	Default: 52428800
MS_SUBMODULE_LOG_v	Specifies log levels of C++ sub modules of MindSpore.	Dict {String:Integer…}	0-DEBUG 1-INFO 2-WARNING 3-ERROR SubModule: COMMON, MD, DEBUG, DEVICE, COMMON, IR…

For more information, see Log-related Environment Variables and Configurations.

Dump Function

Environment Variable	Function	Type	Value Range	Description
MINDSPORE_DUMP_CONFIG	Specify the path of the configuration file that the cloud-side Dump or the device-side Dump depends on.	String	File path, which can be a relative path or an absolute path.
MS_DIAGNOSTIC_DATA_PATH	When the cloud-side Dump is enabled, if the path field is not set or set to an empty string in the Dump configuration file, then $MS_DIAGNOSTIC_DATA_PATH /debug_dump is regarded as path. If the `path field in configuration file is not empty, it is still used as the path to save Dump data.	String	File path, only absolute path is supported.	This variable is used together with MINDSPORE_DUMP_CONFIG.

For more information, see Using Dump in the Graph Mode.

Data Processing

Environment Variable	Function	Type	Value Range	Description
DATASET_ENABLE_NUMA	Determines whether to enable numa bind feature. Most of time this configuration can improve performance on distribute scenario.	String	True: Enables the numa bind feature.	This variable is used together with libnuma.so.
MS_CACHE_HOST	Specifies the IP address of the host where the cache server is located when the cache function is enabled.	String	IP address of the host where the cache server is located.	This variable is used together with MS_CACHE_PORT.
MS_CACHE_PORT	Specifies the port number of the host where the cache server is located when the cache function is enabled.	String	Port number of the host where the cache server is located.	This variable is used together with MS_CACHE_HOST.
OPTIMIZE	Determines whether to optimize the pipeline tree for dataset during data processing. This variable can improve the data processing efficiency in the data processing operator fusion scenario.	String	true: enables pipeline tree optimization. false: disables pipeline tree optimization.

For more information, see Single-Node Data Cache and Optimizing the Data Processing.

Debugger

Environment Variable	Function	Type	Value Range	Description
ENABLE_MS_DEBUGGER	Determines whether to enable Debugger during training.	Boolean	1: enables Debugger. 0: disables Debugger.	This variable is used together with MS_DEBUGGER_HOST and MS_DEBUGGER_PORT.
MS_DEBUGGER_HOST	Specifies the IP of the MindInsight Debugger Server.	String	IP address of the host where the MindInsight Debugger Server is located.	This variable is used together with ENABLE_MS_DEBUGGER=1 and MS_DEBUGGER_PORT.
MS_DEBUGGER_PARTIAL_MEM	Determines whether to enable partial memory overcommitment. (Memory overcommitment is disabled only for nodes selected on Debugger.)	Boolean	1: enables memory overcommitment for nodes selected on Debugger. 0: disables memory overcommitment for nodes selected on Debugger.
MS_DEBUGGER_PORT	Specifies the port for connecting to the MindInsight Debugger Server.	Integer	Port number ranges from 1 to 65536.	This variable is used together with ENABLE_MS_DEBUGGER=1 and MS_DEBUGGER_HOST.

For more information, see Debugger.

Other

Environment Variable	Function	Type	Value Range	Description
GROUP_INFO_FILE	Specify communication group information storage path	String	Communication group information file path, supporting relative path and absolute path.
GRAPH_OP_RUN	When running the pipeline large network model in task sinking mode in graph mode, it may not be able to start as expected due to the limitation of stream resources. This environment variable can specify the execution mode of the graph mode. Set this variable to 0, indicating that model will be executed in non-task sinking mode which is the default execution mode. Set this variable to 1, indicating a non-task sinking mode, which has no flow restrictions, but has degraded performance.	Integer	0: task sinking mode. 1: non-task sinking mode.
MS_DEV_ENABLE_FALLBACK	Fallback function is enabled when the environment variable is set to a value other than 0.	Integer	1: enables fallback function 0: disables fallback function Default: 1
MS_EXCEPTION_DISPLAY_LEVEL	Control the display level of exception information	Integer	0: display exception information related to model developers and framework developers 1: display exception information related to model developers Default: 0
MS_OM_PATH	Specifies the save path for the file analyze_fail.dat/*.npy which is dumped if task exception or a compiling graph error occurred. The file will be saved to the path of the_specified_directory /rank_${rank_id}/om/.	String	File path, which can be a relative path or an absolute path.
OPTION_PROTO_LIB_PATH	Specifies the RPOTO dependent library path.	String	File path, which can be a relative path or an absolute path.