我至強處理器的2個節點的集羣上安裝的Linpack。有時,如果我用這個命令啓動的Linpack:的Linpack有時起,有時沒有,但什麼都沒有改變
程序mpiexec -np 28 -print秩地圖-f /root/machines.HOSTS ./xhpl_intel64
LINPACK開始並打印輸出,有時我只看到打印的mpi映射,然後沒有任何跟蹤。對我來說,這似乎是隨機的行爲,因爲我不改變已經提到的電話和之間的任何東西,Linpack測試有時開始時,有時沒有。 在top
我可以看到已經創建xhpl_intel64
流程,他們大量使用的CPU,但看着節點之間的通信時,iftop
告訴我,它沒有被髮送。
我使用MPICH2作爲MPI實現。這是我的HPL.dat:
# cat HPL.dat
HPLinpack benchmark input file
Innovative Computing Laboratory, University of Tennessee
HPL.out output file name (if any)
6 device out (6=stdout,7=stderr,file)
1 # of problems sizes (N)
10000 Ns
1 # of NBs
250 NBs
0 PMAP process mapping (0=Row-,1=Column-major)
1 # of process grids (P x Q)
2 Ps
14 Qs
16.0 threshold
1 # of panel fact
2 PFACTs (0=left, 1=Crout, 2=Right)
1 # of recursive stopping criterium
4 NBMINs (>= 1)
1 # of panels in recursion
2 NDIVs
1 # of recursive panel fact.
1 RFACTs (0=left, 1=Crout, 2=Right)
1 # of broadcast
1 BCASTs (0=1rg,1=1rM,2=2rg,3=2rM,4=Lng,5=LnM)
1 # of lookahead depth
1 DEPTHs (>=0)
2 SWAP (0=bin-exch,1=long,2=mix)
64 swapping threshold
0 L1 in (0=transposed,1=no-transposed) form
0 U in (0=transposed,1=no-transposed) form
1 Equilibration (0=no,1=yes)
8 memory alignment in double (> 0)
EDIT2:
我現在只是讓一會兒程序運行和30分鐘後,它告訴我:
# mpiexec -np 32 -print-rank-map -f /root/machines.HOSTS ./xhpl_intel64
(node-0:0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15)
(node-1:16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31)
Assertion failed in file ../../socksm.c at line 2577: (it_plfd->revents & 0x008) == 0
internal ABORT - process 0
APPLICATION TERMINATED WITH THE EXIT STRING: Hangup (signal 1)
這是一個MPI的問題?
你知道這可能是什麼類型的問題?