Version

mvapich2 with icc CUDA flag -Ofast           mvapich2 with icc CUDA

mvapich2 with gcc CUDA                                openmpi icc no CUDA

infinband                                                             precompile-TCP

precompile-mulicore-CUDA                         precompile-ibverbs-smp-CUDA

Problem

ldd

ldd

Solution

Use absolute path to run instead of bashrc

Others

• notes

• ./build --help

• ./config --help

Run all test first

Record remaining time

• Testcase 1 : 18 min

• Testcase2 : 42 min

• Testcase 3 : 82 min

• Testcase 4 : 21 min

• Testcase 5 : 24 min

• Testcase 6 : more than 90 min

• Competition time 180 min

Miss

• Time left 94 min

• Remaining time 1.39 hour

• 1 hour and 39 min = 99 min

./ V.S ~/

poseidon01 is idle during competition

Time distribution

Wall clock

Testcase1 : 

-march=native             1095
-Ofast                             1094
no extra flags                1096
tee                                     1098

Tee

SMP-CUDA

reference