船舶機械模擬程式加速

1.Roadmap

1. Perpare DRBL-Kerrighed testbed
2. Config & tun Testbed
3. Choose OpenMP compiler
4. Test Stability of OpenMP Running in DRBL-Krg

2.Schedule

Task	Complete	Ouput & Evaluation
Perpare DRBL-Kerrighed Testbed	2008-08-06	安裝說明文件和測試平台
Config & tun Testbed
Choose OpenMP Compiler
Test Stability of CpenMP Running in DRBL-Krg

3.Testbed information

• Software

Name	Version
debian	etch r3
Kerrighed	2.3.0
DRBL

• Compiler

Compiler	PATH	Comments
Intel gcc	/opt/intel/cc/10.1.015	​http://0rz.tw/8e4AE
Intel Fortran	/opt/intel/fc/10.1.015	​http://0rz.tw/654xd

• Features of the Intel OpenMP implementation
  • OpenMP 2.5 conforming
  • Nested parallelism
  • Workqueuing extension to OpenMP
  • Interoperability with POSIX and Windows threads
  • OMP_DYNAMIC support
  • Performance analysis via Intel Thread Profiler
  • Error Checking with the Intel Thread Checker (see below)

4.Limitation of Running OpenMP in Kerrighed

• Features removed temporarily (Form 2.0.0 version)
  • KerFS
  • Distributed threads
  • Checkpoint
  • Dynamic streams.
• Solution:
  • If we want to use OpenMP in Kerrighed, I think we must...

5.Kerrighed modules - Source Code Structure Analysis

• Gandalf module: Global memory management
  • /kerrighed-2.3.0/libs/include/kerrighed_tools.h
  • /kerrighed-2.3.0/modules/tools/krg_services.h
  • /kerrighed-2.3.0/modules/mm/mmap_handler.h
    /* Memory Part -> Memory Pool */
• Aragon module: Global process management
  • /kerrighed-2.3.0/modules/proc/distant_syscalls.c
  • /kerrighed-2.3.0/modules/scheduler/mosix_probe.c
  • /kerrighed-2.3.0/modules/tools/krg_arch.h
  • /kerrighed-2.3.0/modules/rpc/rpcid.h
  • /kerrighed-2.3.0/modules/epm/fork_delay.c
  • /kerrighed-2.3.0/modules/epm/migration.c
  • /kerrighed-2.3.0/modules/epm/procfs.c
    /* Process Part -> MPI , OpenMP */
• Elrond module: Synchronization tools for parallel applications
  • /kerrighed-2.3.0/modules/epm/ghost_process_api.h
• Gimli:
  • /kerrighed-2.3.0/libs/libkerrighed/libcomm.c
  • /kerrighed-2.3.0/libs/include/comm.h
  • /kerrighed-2.3.0/libs/include/kerrighed_tools.h
  • /kerrighed-2.3.0/modules/arch/um/krg_um.c
  • /kerrighed-2.3.0/tools/krg_services.h
  • /kerrighed-2.3.0/tools/krg_arch.h
  • /kerrighed-2.3.0/modules/fs/kerfs/dir_io_linker.c
  • /kerrighed-2.3.0/modules/fs/kerfs/inode_io_linker.c
  • /kerrighed-2.3.0/modules/fs/kerfs/file_io_linker.c
    

All these distributed services are based on Gimli for their communications. Gimli is a service providing high performance communication inside the cluster and a complete abstraction of the communication system to kerrighed that makes it portable on various interconnection networks.

Reference

• ​OpenMP
• ​Intel Compiler