parallel processing - Finding the amount of execution time spent on each processor in a Beowulf cluster -



parallel processing - Finding the amount of execution time spent on each processor in a Beowulf cluster -

i have downloaded lu decomposition programme next link http://www.cs.nyu.edu/wanghua/course...el/h3/mpi_lu.c , programming running well...the reason me writing thread can 1 help me getting time of execution spent on processors of nodes connected in cluster aid me in getting statistical value cluster.

kindly, help me don't know much mpi programming, want amount of time spent on each processor of nodes in cluster above program.

there @ to the lowest degree 2 ways of getting times seek, or @ to the lowest degree close approximation them.

if have job management scheme installed on cluster (if don't should have) expect log time spent on each node each process involved in computation. grid engine keeps info in accounting file , provides utility qacct inspecting file. i'd surprised larn other used job management systems don't offer similar info , functions.

you edit programme , insert mpi_wtime calls @ critical points. of course, mpi routines, can called after mpi_init , before mpi_finalize; have create other arrangements timing parts of code lie outside scope of mpi. (on mpi implementations not back upwards clock synchronisation calls mpi_wtime possible before mpi_init , after mpi_finalize called, there mpi_wtime wrapper around scheme timer routines, that's not guaranteed portable)

parallel-processing cluster-computing mpi mpich

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