Public/User_Guide/FTI: config.fti

##############   FTI CONFIGURATION FILE   ###############

# *****************************************************************
# *** Here are the main parameters you should provide to FTI ******
# *****************************************************************
[Basic]

# Set to 1 if you want to dedicate 1 MPI rank per node to FTI
# set to 0 if you want ALL ckpt. post-processing to be done inline
Head = 0

# The number of processes launched per node (Same for every node)
# including FTI-dedicated process.
Node_size = 2

# LOCAL directory where the local checkpoints will be stored
# This directory MUST exist and have write access
Ckpt_dir = ./Local      #/path/to/local/storage/

# GLOBAL directory where the global checkpoints will be stored
# This directory MUST exist and have write access
Glbl_dir = ./Global     #/path/to/global/storage/

# GLOBAL directory where the FTI metadata will be stored
# This directory MUST exist and have write access
Meta_dir = ./Meta       #/home/username/.fti

# Level 1 ckpt interval in minutes of L1 ckpts (Local write)
Ckpt_L1 = 3

# Level 2 ckpt interval in minutes of L2 ckpts (Partner copy)
Ckpt_L2 = 5

# Level 3 ckpt interval in minutes of L3 ckpts (Reed-Solomon)
Ckpt_L3 = 7

# Level 4 ckpt interval in minutes of L4 ckpts (PFS write)
Ckpt_L4 = 11

# dCP interval in minutes for level 4 checkpoints
# dCP - differential checkpointing
# This setting requires io_mode=3 (FTI-FF) and dcp_enabled=1
Dcp_L4 = 0

# 1 if Level 2 ckpt is inline (synchronous) 0 if not (asynchronous)
Inline_L2 = 1

# 1 if Level 3 ckpt is inline (synchronous) 0 if not (asynchronous)
Inline_L3 = 1

# 1 if Level 4 ckpt is inline (synchronous) 0 if not (asynchronous)
Inline_L4 = 1

# Set to 1 if you want to save the last checkpoint taken before finalize
# Set to 0 if you want to erase all checkpoints after finalize
keep_last_ckpt = 0

# Enabled, all level 4 checkpoints of the execution will be kept in 'Glbl_dir/l4_archive'
keep_l4_ckpt   = 0

# The size of the encoding groups (Something between 4 and 16)
# The total number of nodes MUST be multiple of this parameter
Group_size = 4

# Number of iterations between iteration length sync (0 => 512 iterations)
# If you app has iterations of varying length set this value between (1 and 10)
max_sync_intv               = 0

# Set to: 
# 1 -> POSIX 
# 2 -> MPI-IO
# 3 -> FTI-FF
# 4 -> SIONLib
# 5 -> HDF5.
ckpt_io                     = 1

# Enable staging feature
Enable_Staging              = 0

# Enable differential checkpointing (dCP)
Enable_dCP                  = 0

# Select dCP hashing algorithm:
# 1 -> MD5
# 2 -> CRC32
# The modes may be set as well by the environment variable 'FTI_DCP_HASH_MODE=[0|1]'
# This will overwrite the setting from the configuration file!
dCP_Mode                    = 0

# Set hash-partition block size
# The partition block size, b,  must be: 512 < b < USHRT_MAX (Bytes)
# b may be set as well by the environment variable 'FTI_DCP_BLOCK_SIZE=b (in bytes)'
# This will overwrite the setting from the configuration file!
dCP_Block_Size              = 16384

# The verbosity of FTI. (2 is recommended)
# 3 (Print only errors, silent mode)
# 2 (Print errors and some few important information)
# 1 (Print debug messages, very verbose)
Verbosity = 2

# *****************************************************************
# *** Change these parameters ONLY in case of restart   ***********
# *****************************************************************

[Restart]

# Set this to 0 if you are launching this job for the first time
# Set this to 1 if you are recovering this job after a failure
Failure = 0

# Set with the execution ID in case of restart after failure
# Set to NULL if normal execution
Exec_ID = XXXX-XX-XX_XX-XX-XX


# *****************************************************************
# *** Change these parameters to inject failures.       ***********
# *****************************************************************

[Injection]

# Rank of the process that injects the failures
rank = 0

# Total number of bit-flips to inject
number = 0

# Bit position of the injection
position = 0

# Injection frequency in seconds
frequency = 0


# *****************************************************************
# *** Change something here ONLY if you know what you are doing ***
# *****************************************************************
[Advanced]

# The ckpt files are decomposed in blocks of size Block_size KB
Block_size = 1024

# The ckpt files are transfered in chunks of size Transfer_size MB
# from local to PFS
Transfer_size = 16

# The tags for MPI communications done within the FTI library
general_tag = 2612
ckpt_tag = 711   
stage_tag = 406
final_tag = 3107

# Set to 1 if you are doing a test in local in a single computer
Local_test = 1

#This option only impacts if -DENABLE_LUSTRE was added to the Cmake command.
#It sets the striping unit for the MPI-IO file.
lustre_striping_unit        = 4194304

#This option only impacts if -DENABLE_LUSTRE was added to the Cmake command.
#It sets the striping factor for the MPI-IO file.
lustre_striping_factor      = -1

#This option only impacts if -DENABLE_LUSTRE was added to the Cmake command.
#It sets the striping offset for the MPI-IO file.
lustre_striping_offset      = -1