Changes between Version 21 and Version 22 of Osaka


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Timestamp:
Sep 4, 2008, 10:01:06 AM (17 years ago)
Author:
rock
Comment:

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  • Osaka

    v21 v22  
    1010== 2.Schedule ==
    1111||     '''Task'''                             ||'''Complete'''||'''Ouput & Evaluation'''||
    12 ||Perpare DRBL-Kerrighed Testbed              ||2008-08-06||       安裝說明文件和測試平台    ||
     12||Perpare Testbed                             ||2008-08-06||       安裝說明文件和測試平台    ||
    1313||Config & tun Testbed                        ||          ||                             ||
    1414||Choose OpenMP Compiler                      ||          ||                             ||
    … …  
    3636
    3737[[BR]]
    38 == 4.Limitation of Running OpenMP in Kerrighed ==
    39  * Features removed temporarily (Form 2.0.0 version)
    40     * KerFS
    41     * Distributed threads
    42     * Checkpoint
    43     * Dynamic streams.
    44  * Solution:
    45     * If we want to use OpenMP in Kerrighed, I think we must...
     38== [wiki:Osaka_Krg 4.Kerrighed & Osaka]  ==
    4639
    47 [[BR]]
    48 == 5.Kerrighed modules - Source Code Structure Analysis ==
    49 === 5.1 Kerrighed 0.70 Totally 7 Modules ===
    50 [[Image(krg0.7arch.png)]]
    51  * Kerrighed extension of Linux Kernel
    52    * Process & load balancing - '''Aragorn'''
    53    * Containers - '''Gandalf'''
    54    * Synchronization - '''Elrond'''
    55    * Ghosts - '''Nazgul'''
    56    * Communication - '''Gimli''', '''Gloin'''
    57    * Tools - '''lluvatar'''
    58 
    59 ==== 5.1.1 Probably the Key modules for this project ====
    60 
    61  * '''Gandalf module''': Global memory management -> ('''For Container''')
    62    * /kerrighed-2.3.0/libs/include/kerrighed_tools.h
    63    * /kerrighed-2.3.0/modules/tools/krg_services.h           
    64    * /kerrighed-2.3.0/modules/mm/mmap_handler.h[[BR]]
    65 
    66    '''/* Memory Part -> Distributed Shared Memory (DSM) , MPI&OpenMP */'''
    67 
    68  * '''Aragon module''': Global process management -> ('''For Migration''')
    69    * /kerrighed-2.3.0/modules/proc/distant_syscalls.c
    70    * /kerrighed-2.3.0/modules/scheduler/mosix_probe.c
    71    * /kerrighed-2.3.0/modules/tools/krg_arch.h
    72    * /kerrighed-2.3.0/modules/rpc/rpcid.h                   
    73    * /kerrighed-2.3.0/modules/epm/fork_delay.c
    74    * /kerrighed-2.3.0/modules/epm/migration.c
    75    * /kerrighed-2.3.0/modules/epm/procfs.c[[BR]]
    76 
    77    '''/* Process & Load balancing Part -> MPI , OpenMP */''' [[BR]]
    78 
    79    '''Process migration involves two key phases:''' [[BR]]
    80      (1) migration of the process execution context [[BR]]
    81      (2) maintenance of links between the migrated process and the resources [[BR]]
    82      
    83    First task: '''Nazgul module''' ---> second task: '''Gandalf module''' -> container & linker
    84 
    85  * '''Elrond module''': Synchronization tools for parallel applications -> ('''For Synchronization''')
    86    * /kerrighed-2.3.0/modules/epm/ghost_process_api.h[[BR]]
    87    
    88    '''/* Synchronization Part -> MPI , OpenMP */''' [[BR]]
    89 
    90 {{{
    91   Elrond provides distributed locks, barriers, semaphores, and wait condition to processes in a implementation that   
    92   supports process checkpointing as well as migration between nodes.
    93 }}}
    94 
    95  * '''Gimli''':
    96    * /kerrighed-2.3.0/libs/libkerrighed/libcomm.c
    97    * /kerrighed-2.3.0/libs/include/comm.h
    98    * /kerrighed-2.3.0/libs/include/kerrighed_tools.h
    99    * /kerrighed-2.3.0/modules/arch/um/krg_um.c
    100    * /kerrighed-2.3.0/tools/krg_services.h
    101    * /kerrighed-2.3.0/tools/krg_arch.h
    102    * /kerrighed-2.3.0/modules/fs/kerfs/dir_io_linker.c
    103    * /kerrighed-2.3.0/modules/fs/kerfs/inode_io_linker.c
    104    * /kerrighed-2.3.0/modules/fs/kerfs/file_io_linker.c [[BR]]
    105 
    106 
    107 
    108 {{{ 
    109    All these distributed services are based on Gimli for their communications. Gimli is a service providing high
    110    performance communication inside the cluster and a complete abstraction of the communication system to kerrighed that
    111    makes it portable on various interconnection networks.
    112 }}}
    113 
    114 
    115 
    116 [[BR]]
    117 === 5.2 Kerrighed 2.3.0 Totally 14 Modules ===
    118 [[Image(KerrighedArch.png)]]
    119 || RPC               ||               ||
    120 || Hotplug           ||               ||
    121 || KDDM              ||               ||
    122 || Capability        ||               ||
    123 || ProcFS            ||               ||
    124 || Sync              ||               ||
    125 || IPC               ||               ||
    126 || FS                ||               ||
    127 || MM                ||               ||
    128 || Dynamic Streams   ||               ||
    129 || Ghost             ||               ||
    130 || Proc              ||               ||
    131 || EPM               ||               ||
    132 || Global Scheduler  ||               ||
    133  * Load Kerrighed Moudles Messages
    134 {{{
    135 $ dmesg
    136 Start loading Kerrighed...
    137 Init Kerrighed worker(s)...Init Kerrighed low-level framework...
    138 Init kerrighed syscall mechanism
    139 Kerrighed tools - init module
    140 TIPC: Started in network mode
    141 TIPC: Own node address <1.1.2>, network identity 1
    142 Try to enable bearer on lo:<5>TIPC: Enabled bearer <eth:lo>, discovery domain <1.1.0>, priority 10
    143 ok
    144 Try to enable bearer on eth0:<5>TIPC: Enabled bearer <eth:eth0>, discovery domain <1.1.0>, priority 10
    145 ok
    146 Try to enable bearer on eth1:<4>TIPC: Bearer <eth:eth1> priority adjustment required 10->9
    147 TIPC: Enabled bearer <eth:eth1>, discovery domain <1.1.0>, priority 9
    148 ok
    149 RPC initialisation done
    150 Init Kerrighed low-level framework (nodeid 1) : done
    151 Init Kerrighed distributed services...
    152 KDDM initialisation : start
    153 KDDM set init
    154 KDDM set init : done
    155 KDDM initialisation done
    156 KerMM initialisation : start
    157 KerMM initialisation done
    158 DVFS initialisation : start
    159 FAF: initialisation : start
    160 FAF: initialisation : done
    161 DVFS initialisation done
    162 KerIPC initialisation : start
    163 KerIPC initialisation done
    164 Proc initialisation: start
    165 Proc initialisation: done
    166 EPM initialisation: start
    167 EPM initialisation: done
    168 Init Kerrighed distributed services: done
    169 Kerrighed... loaded!
    170 TIPC: Established link <1.1.2:eth0-1.1.3:eth0> on network plane B
    171 Kerrighed is running on 2 nodes
    172 
    173 }}}
    174 [[BR]]
    175 === 5.3 Private Variables ===
    176  * '''mmap''' (map pages of memory - by adding a MAP_LOCAL flag)
    177    * /kerrighed-2.3.0/libs/include/kerrighed_tools.h
    178    * /kerrighed-2.3.0/modules/tools/krg_services.h
    179    * /kerrighed-2.3.0/modules/mm/mman.h
    180 
    181 {{{
    182    It is possible to ensure that memory will be allocated in the virtual address space of each thread of the process
    183    without linking it to a container, thus ensuring that no coherence will be maintained between the different copies of 
    184    that memory segment across the different threads.
    185 }}}
    186 
    187 [[BR]]
    188 === 5.4 OpenMP on Kerrighed ===
    189  * Standard '''Pthread''' library replaced by '''krgthread''' library proving the Posix interface on Kerrighed Clusters.
    190  * Containers to support shared variables in the cluster.
    191  * A thread using kerrighed synchronization primitives can migrate and be checkpointed at any time, and except when
    192    blocked in the OS.
    19340
    19441[[BR]]